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USPTO Terms of Art — I

Glossary of USPTO Terms of Art

| A | B | C-CL | CM-CZ | D-DIM | DIM-DZ | E | F | G | H | I | J-K | L | M-MET | MET-MZ | N | O | P-PHA | PHE-PON | POR-PZ | Q | R | S-SEPA | SEPO-SMT | SN-STEM | STEP-SZ | T-TOG | TON-TZ | U | V | W | X-Z |

I2L (CLASS 438)
integrated injection logic

IB (CLASS 438)
(a) intrinsic base or (b) ion beam

IBD (CLASS 438)
ion beam deposition

IC (CLASS 438)
integrated circuit

ICP (CLASS 438)
inductively coupled plasma

IDENTIFIED (CLASS 430)
A substance, layer, or product is considered identified when it is claimed in terms of its chemical constitution instead of merely its function. The terms "organic" and "inorganic" are not considered identified, but any other positive chemical identification is considered sufficient even if generic, e.g., heterocyclic, synthetic resin, hydrocarbon, etc. Negative definition, per se, e.g., nonaqueous, etc., is not considered identification, but if combined with sufficient other material, e.g., nonaqueous alcohol. The term acid or base or their equivalents are considered identification. The identification of any ingredient of a layer is sufficient to make the layer identified.

IDENTIFIER (CLASS 902)
A data bearing record intended to identify either an account or the record's bearer, whereby authorization for a transaction* can be obtained.

IDENTIFYING (CLASS 506)
Determining the exact nature (e.g., chemical structure or sequence listing, etc.) of a particular library member or of a particular subset of library members.

IG (CLASS 438)
intrinsic gettering

IGBT (CLASS 438)
insulated gate bipolar transistor (e.g., COMFET, HIMOS)

IGFET (CLASS 438)
insulated gate field effect transistor

IID (CLASS 438)
impurity induced disordering

IJP (CLASS 438)
ink jet printhead

ILB (CLASS 438)
inner lead bonding

ILD (CLASS 438)
interlayer dielectric

ILLUMINATING MEANS (CLASS 362)
Basic subject matter of the class or subcombinations thereof.

IMAGE (CLASS 353)
The optical counterpart of an object produced by a lens or other optical system. In an image projection system an image of an object is formed on a screen or other viewing surface. A photographic camera forms an image of an object on a photosensitive film. After the film is developed, a picture of the original object appears on the film. A picture of this type is generally employed as the object in image projectors.

IMAGE (CLASS 355)
The representation of an object (original or carrier) produced by the transmission or reflection of light incident upon the original or carrier.

IMAGE (CLASS 399)
The representation of an object (e.g.,original, carrier) produced by the transmission or reflection of light incident upon the original.

IMAGE (CLASS 430)
The likeness or reproduction of (a) an object, or (b) an instrumented or discernible phenomenon.

IMAGE ANALYSIS* (CLASS 382)
For the purpose of this class, image analysis* is defined as a systematic operation or series of operations performed on data representative of an observed image with the aim of measuring a characteristic of the image, detecting variations and structure in the image, or transforming the image in a way that facilitates its interpretation.

IMAGE DATA (CLASS 345)
The information provided to form the visual image*.

IMAGE FORMER (CLASS 359)
An optical device capable of producing an image from light rays proceeding from an object.

IMAGE RECORD (CLASS 430)
A record, made using an imaging process, where the image is located, e.g., the image may be in or on a radiation conductor containing element or may be in or on receptor element, etc.

IMAGE SENSOR (CLASS 348)
A generic name for both cathode-ray tube and solid-state imaging devices which converts an optical image of an object into an electrical signal representative of the object image.

IMAGE-BEARING MEMBER (CLASS 399)
A substrate for holding an electrostatic charge pattern or a toner image.

IMAGE, LATENT (CLASS 355)
The invisible image produced by the action of light alone or with other electrostatic charge producing means on, or in, a photoreceptor. A latent image may be made visible by development.

IMAGE, LATENT (CLASS 399)
The invisible image produced by the action of light alone or with other electrostatic charge-producing means on, or in, a photoreceptor. A latent image may be made visible by development.

IMAGING (CLASS 399)
Forming an image that is a reproduction of an original.

IMAGING (CLASS 430)
The application of radiation to form an image.

IMAGING SYSTEM* (CLASS 382)
For the purpose of this class, an imaging system is any means which acquires an image. For example, it includes video cameras, CCD arrays, scanners, etc.

IMHOFF (CLASS 210)
A two-story septic tank of special design to allow digestion of sludge in lower chamber with settling in upper chamber and passage of settled sludge from upper to lower chamber. Process is anaerobic and provided for in subclasses 602+.

IMMA (CLASS 438)
ion microprobe mass analysis

IMMEDIATE-PRECURSOR (CLASS 117)
The precursor immediately next to the growing single-crystal* and from which the single-crystal* forms or grows. Contrast with precursor*.

IMMOBILIZE (CLASS 588)
To contain the hazardous or toxic waste by any means that keeps the hazardous or toxic waste in a matrix or container such as cement, organoclay, glass, or in an actual physical container.

IMMUNOADSORBENT (CLASS 436)
An insoluble material that is used for the purification of antibodies by adsorbing them from a serum; a gel for trapping antibodies, or an inert solid to which either antigens or haptens have been covalently linked are two examples.

IMMUNOASSAY (CLASS 436)
An assay that utilizes antigen antibody reactions for the determination of chemical substances.

IMMUNOELECTROPHORESIS (CLASS 436)
A technique for identifying antigens in complex mixtures by first separating the antigens in one dimension by means of gel electrophoresis, and then allowing them to react with antibodies by means of two dimensional double diffusion through the gel; a pattern of precipitin arcs is thereby produced. Abbr IE.

IMMUNOGLOBULIN (CLASS 436)
1. A protein of animal origin that has a known antibody activity. 2. A protein that is closely related to an antibody by its chemical structure and by its antigenic specificity.

IMPACT, MECHANICAL SHOCK, OR VIBRATION-PRODUCING MOTOR (CLASS 318)
An electric motor having means for moving one of the motor parts into impact or percussive contact with one or more other parts of either the motor structure or a part which is structurally combined with the motor structure, or a motor whose prime or essential function is to transmit mechanical shock or vibrations to a device or mechanism secured to the motor or upon which the motor may be mounted, (e.g., rotary motor with the rotor unbalanced to produce vibrations which are transmitted to its support.

IMPACTING (CLASS 173)
A type of drive function which includes striking a mass of material (e.g., tool) with another mass of material (e.g., hammer head).

IMPACTING DEVICE (CLASS 173)
A means including a mass of material (i.e., hammer head) which is specifically intended to deliver a blow to a tool. The mass of material need not necessarily strike the tool directly, but may deliver the blow through an intervening element (e.g., anvil).

IMPALING OR SNAGGING (CLASS 171)
The act of removing or unearthing an object at least partially imbedded in the ground by an extractor which penetrates through the surface of the object or which passes through or around a reentrant or restricted portion of the object to form a temporary connection between said object and the extractor.

IMPATT (CLASS 438)
impact ionization avalanche transist time (diode)

IMPEDANCE (CLASS 323)
Includes an inductance, a capacitance, or a resistance or any combination thereof and excluding any source of electric energy. Inductances are usually grouped with transformers in the subclasses that follow.

IMPEDANCE (CLASS 363)
Includes an inductance, or a capitance, or a resistance, or any combination thereof, and excludes any source of electrical energy.

IMPEDANCE MATCHING NETWORK (CLASS 330)
Coupling networks which include one or more impedance elements construed or proportioned to substantially eliminate the reflected wave energy between the network and at least one of the connected circuits caused by impedance differences.

IMPEDANCE MATCHING NETWORK (CLASS 333)
Coupling networks which include one or more impedance elements construed or proportioned to substantially eliminate the reflected wave energy between the network and at least one of the connected circuits caused by impedance differences.

IMPEDANCE OR IMPEDANCE DEVICE (CLASS 318)
A means having inductance, capacity, resistance or any combination thereof and excluding any source of electric energy.

IMPELLER (CLASS 416)
A device comprising at least one working member* which functions to react with a working fluid* such that action movement of the member causes reaction movement of the fluid or action movement of the fluid causes reaction movement of the working member. In its simplest form, a single impeller is considered to comprise a working member or members and any parts rigidly connected therewith whereby the impeller is supported for movement. In the case of an impeller having a working member which has relative movement with respect to another impeller part or another working member, the definition of impeller is considered to include those mechanical elements which permit or cause relative motion of the working members and at least partly partake of the motion of the working member and are closely associated therewith to form a unitary device having a unitary impelling function. In view of the many embodiments an impeller may have, it is not possible to more definitely define the concept, but in most cases it will be apparent which elements forms part of the impeller and which elements, on the other hand, comprise support* means for the impeller of means for transmitting power to or from the impeller. In those subclasses in which the precise limits of the impeller, per se, are apt to be troublesome, an effort is made to define the impeller concept in more detail insofar as it concerns the concept of the particular subclass.

IMPLEMENT (CLASS 015)
Defined in this class as a work contacting cleaning or coating agency subcombination which as disclosed, could be either (1) manipulated manually as a tool, (2) moved by a machine, as defined above and constituting a part thereof, or (3) held in place by support means for direct manual application of the work thereto. (Note: A hand held nozzle is not an implement as defined above and is classified elsewhere as a machine subcombination).

IMPLEMENT (CLASS 172)
A combination of parts comprising an earth working device. It may mean merely an earth working portion or a complex combination of parts including a tractor. Usually it indicates a complete device which as an entity may be readily attached to a tractor in the field.

IMPLEMENT (CLASS 249)
A work containing agency which as disclosed, could be either (1) manipulated manually as a utensil, (2) a subcombination of a machine or press couple, or (3) held in place by support means for direct manual or machine application of work thereto.

IMPRESSION (CLASS 462)
A discontinuity in a surface resulting from applying pressure, usually mechanical, against a surface to mark it such as to produce indicia thereon.

IMPURITY (CLASS 257)
A foreign material present in a semiconductor crystal, such as boron or arsenic in silicon, which is added to the semiconductor to produce either p-type or n-type semiconductor material, or to otherwise result in material whose electrical characteristics depend on the impurity dopant atoms.

IMPURITY (CLASS 438)
A foreign material present in a semiconductor crystal, such as boron or arsenic in silicon, which is added to the semiconductor to produce either p-type or n-type semiconductor material, or to otherwise result in material whose electrical characteristics depend on the impurity dopant atoms.

IN SILICO LIBRARY (CLASS 506)
A library which has no physical existence, being constructed solely in electronic form or on paper. An in silico library is one type of virtual library. The building blocks required for such a library may not exist, and the chemical steps for creating such a library may not have been tested. These libraries are used in the design and evaluation of possible libraries.

IN SITU (CLASS 249)
The utilization of a mold at the job site wherein upon removal of mold parts the product remains in its permanent location.

IN SITU (CLASS 425)
Remaining in the same place.

IN-FOCUS (CLASS 396)
An in-focus condition occurs when an object image attains its sharpness.

INACCESSIBLE HOLE (CLASS 175)
A hole or cavity in the earth which is not large enough to permit both a human operator and a boring means to be located therein. A specific disclosure that the hole or cavity is a well or borehole and that the supporting or carrying means for the boring means substantially fills said hole or cavity will be considered an inaccessible hole.

INCANDESCENT LAMP (CLASS 313)
Lamps which are provided with a filament or glower adapted to be heated to incandescence by the passage of an electric current therethrough.

INCINERATE (CLASS 588)
To burn to highly oxidized ashes. The oxidation is chemically near completion.

INCINERATION (CLASS 110)
The combustion of refuse (*) for primary purpose of disposing of that refuse rather than for producing heat.

INCLUDING HYDROGENATED (CLASS 514)
Denotes that a ring system which by definition has ring unsaturation possesses a degree of saturation which may be different than the ring system definition would normally indicate.

INCLUDING HYDROGENATED (CLASS 532)
This term, as a parenthetical expression, is used following the name of a heterocyclic ring or ring system which is unsaturated, e.g., oxazoles, etc. For example, if a subclass is entitled "1, 3-Oxazoles (including hydrogenated)", the parenthetical expression "(including hydrogenated)" means that the subclass is generic to fully unsaturated 1,3-oxazoles and to 1,3-oxazoles wherein one or two of the ring double bonds have been replaced by a single bond; i.e., the subclass is generic to oxazoles, oxazolines and oxazolidines. When the name of such a heterocyclic ring is used in indents where no degree of ring saturation or unsaturation is specified, the name of the heterocyclic ring will again be construed as generic to all possible degrees of ring saturation and unsaturation. If, for example, a subclass entitled "Nitrogen bonded directly to ring carbon of the oxazole ring were indented under "1, 3-Oxazoles (including hydrogenated" the nitrogen subclass be construed as embracing nitrogen bonded directly to the ring carbon of an oxazole, of an oxazoline, or of an oxazolidine. When used following the name of a heterocyclic ring system, such as quinoline, the parenthetical expression indicates that the subclass is generic to compounds having the fully unsaturated form of the ring system, as well as to compounds wherein any number of ring double bonds of the ring system have been replaced by single bonds. The statement made above, re indents, is also applicable to heterocyclic ring systems.

INCLUSION COMPOUNDS (CLASS 532)
See CLATHRATES AND INTERCALATES (INCLUSION COMPOUNDS).

INCLUSIONS (CLASS 164)
Particles of dirt, slag or other impurities occurring in metals that were mechanically entrapped during solidification.

INDEFINITE LENGTH WORK (CLASS 156)
A piece of material handled at points intermediate its ends whereby the length is immaterial to the manner of handling.

INDEFINITE LENGTH WORK (CLASS 264)
A self sustaining body, which because of its relatively large length is handled at a point intermediate of its ends, and includes single or one piece bodies formed in a continuous manner.

INDEFINITE LENGTH WORK (CLASS 425)
A self-sustaining body having a longitudinal dimension which is effectively infinite.

INDETERMINATE LENGTH (CLASS 226)
An extent of material having the characteristic that the longitudinal dimension of the material is effectively infinite insofar as can be determined from the claimed structure for advancing such material. The term applies to an extent of material in which the distance between the ends is irrelevant to the manner of, or structure for, handling and/or moving such material. Thus, except for the lead-end threaders of subclass 91, the leading or trailing end of the material is not utilized by the claimed means for moving the material, nor recognized in a claimed method of moving. The term as used in this class also applies to material which is formed in a closed loop, (i.e., the leading end and the trailing end of definite length material have been joined together). However, the lead end may be used in stopping the material to effect intermittent advance as in subclasses 125+, and a trailing end (effected by a break or depletion of material) may be sensed to stop operation of the advancer.

INDEX (CLASS 707)
An organized structure used for improving the speed for which data can be accessed.

INDICATOR (CLASS 334)
An element or device which is particularly adapted to point out or show, usually visually, the position and/or condition to which a given element or elements are adjusted as, for example, a scale and pointer, one of which is held stationary while the other is connected to a rotatable or movable shaft such as the shaft of a variable capacitor. A second example would be the use of a meter to indicate the amount of current and/or voltage flowing in a given circuit.

INDICIUM (CLASS 234)
A mark or configuration exhibited or carried by an object (such as a pattern* or token) intended for use in the control of a machine.

INDIRECT BAND GAP SEMICONDUCTOR (CLASS 257)
A semiconductor material in which a change in semiconductor crystal momentum for an electron is required when it moves from the conduction band to the valence band and vice versa. Silicon is an indirect band gap semiconductor.

INDIRECT BAND GAP SEMICONDUCTOR (CLASS 438)
A semiconductor material in which a change in semiconductor crystal momentum for an electron is required when it moves from the conduction band to the valence band and vice versa. Silicon and aluminum arsenide are examples of indirect band gap semiconductors.

INDIRECTLY HEATED CATHODE (equiptential cathode) (CLASS 330)
A cathode designed to be heated to its emitting temperature by a separate heating element.

INDIRECTLY-HEATED CATHODE (Equipotential cathode) (CLASS 313)
A cathode designed to be heated to its emitting temperature by a separate heating element.

INDUCED NUCLEAR REACTION (CLASS 376)
See section I, (1) Note.

INDUCTANCE (CLASS 334)
That property of an electrical circuit, or of two or more neighboring circuits, by which a varying current produces or induces an electromotive force in the circuit or neighboring circuits. If an electromotive force is induced in the neighboring circuit or circuits, the term mutual inductance is used.

INDUCTION HEATING (CLASS 373)
The method of producing heat in a charge by placing it in a electromagnetic relationship with an inducing winding, the charge forming the secondary.

INDUCTION MOTORS (CLASS 318)
An asynchronous alternating current motor which operates during running speed conditions as a result of electromagnetic induction and which has at least two electrical conductors which are mounted or positioned in electromagnetic relationship with each other and for movement relative to each other, and in which alternating current energy delivered to one of the conductors ("primary" or "inducing" member) induces in the other of said conductors ("secondary" or "induced" member) an alternating current and the mechanical energy is obtained as a result of the electromagnetic inductive action between the magnetic field generated by the alternating current in the one conductor and the magnetic field generated by the induced current in the other conductor. The secondary or induced winding is usually short circuited or shunted by means of an impedance. An example of an induction motor is the squirrel cage motor, that is, a motor where the secondary winding consists of a plurality of short-circuited bars. See the definition of a "repulsion motor".

INDUCTIVE COUPLING (CLASS 336)
The coupling between separate coils or windings due to the electromagnetic induction between the coils or windings.

INDUCTOR (CLASS 334)
An impedance device comprising a coil means, with or without core means, for introducing inductance into an electric circuit. Both transformers and inductive reactors are included within the meaning of "inductor".

INDUCTOR (CLASS 336)
An impedance device comprising a coil means with or without core means for introducing inductance into an electric circuit and wherein the inherent capacitive reactance thereof does not resonate with the inductance of the coil within the frequency range of the electric current adapted to flow therethrough. Both transformers and inductive reactors are included within the meaning of "inductor". Excluded are inductor devices that are designed to do more than introduce inductance into a circuit. Examples are: inductor devices particularly designed to produce a magnetic field which radiates energy which is not returned to the device, or devices designed to produce external mechanical work by electromagnetic action.

INERT GASES (CLASS 423)
The noble gases of the zero group of the periodic system, consisting of He, Ne, Ar, Kr, Xe, Rn, which have no valency and combine only with great difficulty, if at all, with other elements.

INERT MATERIAL (CLASS 210)
Stuff that does not cause or promote any change in liquid or component being treated. May act as filler, support, or carrier for active material. See subclass 679.

INFEED (CLASS 408)
The relative movement of the tool and work along the tool-axis* during the cutting operation. (Compare work-infeed* and tool-infeed*).

INFORMATION (CLASS 345)
Meaning that a human being assigns to data by means of the conventions applied to that data.

INFORMATION (CLASS 706)
Meaning that a human being assigns to data by means of conventions applied to that data.

INFORMATION (CLASS 709)
Meaning that a human being assigns to data by means of the conventions applied to that data.

INFORMATION (CLASS 711)
Meaning that a human being assigns to data by means of the conventions applied to that data.

INFORMATION (CLASS 712)
Meaning that a human being assigns to data by means of the conventions applied to that data.

INFORMATION (CLASS 713)
Meaning that a human being assigns to data by means of the conventions applied to that data.

INFORMATION (CLASS 714)
Meaning that a human being assigns to data by means of the conventions applied to that data.

iNFORMATION (CLASS 718)
Meaning that a human being assigns to data by means of the conventions applied to that data.

INFORMATION (CLASS 719)
Meaning that a human being assigns to data by means of the conventions applied to that data.

INFORMATION (CLASS 726)
Data with meaning concerning a particular act or circumstance in general. Note: May include or consist of graphics or text or numerical or non-numerical values.

INFORMATION OR INFORMATION SIGNAL (CLASS 369)
A time varying physical quantity representing desired intelligence, often an audible sound or an electrical signal.

INGOT (CLASS 164)
An open-mold casting that is intended for remelting and recasting or reworking to form finished products. Also referred to as billet.

INGOT (CLASS 373)
The casting obtained when molten metal is poured into a mold with the expectation that it be further processed.

INGOT MOLD (CLASS 164)
A heavy mold, usually of cast iron, into which molten metal is teemed, as in the casting of ingots.

INGREDIENT (CLASS 426)
Component part (usually a major one) of mixture that goes to make a food. (Compare additive above which in some instance may be an ingredient).

INITIAL WRAP (CLASS 053)
The wrapping of a cover around a contents to form a package is invariably done in two stages, viz.: first, the shaping of the cover about a single end or surface of the contents, and second, a further shaping of the cover by bending or folding the previously unfolded portions thereof so that the latter portions are in contact with the contents end or surface opposite to the end or surface about which the cover was previously shaped. The intermediate state of the cover at the end of the first stage is referred to as the Initial Wrap. The initial wrapping operation begins with the contact between the first end or surface of the contents with the cover and proceeds in two ways, either by (a) an unidirectional relative movement (which is not necessarily continuous) between the folding instrumentalities and the cover material-contents unit or (b) by a first relative movement between the folding instrumentalities and the cover material-contents unit, and one or more succeeding relative movements therebetween, at least the first of which is in a direction different from the first movement, and which serves to complete the shaping of the cover along the first end or surface of the contents without bending or folding the remaining unfolded portions of the cover into contact with the opposite end or surface of the contents.

INJECTION NOZZLE (CLASS 239)
A terminal outlet member disclosed as connected to and as discharging into a relatively large pressure chamber (e.g., an internal combustion engine or combustion turbine combustion space).

INK (CLASS 400)
A substance (usually fluid, may be viscous or solid) that is applied to the surface of a record-medium* in the configuration of a typed character* symbol to make the character visible to a reader of the typed text. An important property of ink is its ability to form a "permanent" symbol, that is, a symbol that is not easily erased (or erased only with great difficulty), and it is this property that aids the production of an original copy of the typed text. (See the definition of transfer-medium* in this Glossary, section III, for a discussion of the difference between original copy and carbon copy.) A fluid ink may be applied directly to a type-face*, from which type-face the ink is directly imprinted onto a record-medium. A viscous ink may be applied to the record-medium via an ink-impregnated ribbon*, and the ink therein will "flow" by capillary action from unused portions of the ribbon into the used portions of the ribbon. A solid ink may be applied via a so-called "carbon-ink" ribbon, which is often a single-use or one-use ribbon because all or most of the coating of the ribbon is imprinted onto the record-medium when a type-face is impacted thereagainst. A "hecto-graphic" ink is a particular form of ink that is soluble and is used to form a "master" plate used in a "spirit duplicating" copying process.

INORGANIC (CLASS 216)
Pertaining to compounds that do not generally contain carbon and to elements in their free form. It relates to any of the compounds not encompassed under the term Organic defined below in this Glossary.

INPUT CIRCUIT (CLASS 323)
Is the same as electrical source circuit.

INPUT CIRCUIT OR COUPLING (CLASS 330)
The circuit or network of an amplifier extending from the source of electrical signal to the input electrodes of the amplifier, which may include the source of electrical signal.

INPUT MEMBER (CLASS 475)
Mechanism which receives rotational power from a power source*, and transfers such rotational power to a planetary gear transmission.

INPUT SHAFT: (CLASS 477)
Mechanism that receives rotational motion from an engine* and transfers such motion to a gear transmission* or to a clutch*.

INPUT-IMPULSE (CLASS 234)
A force or stimulus applied to a machine from an external source (such as the hand of an operative, or the output mechanism of a calculator, etc.) or which originates from the sensing of a pattern* presented to the machine, and which is capable of controlling tool selection and/or auxiliary-operations*. (Cf. input-means*).

INPUT-MEANS (CLASS 234)
An instrumentality which is effective to exert control over the operation of tool-selecting mechanism and/or mechanism to perform an auxiliary-operation*, in response to the application of an input-impulse* to such input-means, (e.g., a keyboard, a dial, a pattern-sensing unit, etc.)

INPUT-OUTPUT COUPLING (CLASS 385)
The introduction of electromagnetic light radiation into an optical waveguiding structure from a source which is external to the structure, or the extraction of electromagnetic light radiation from an optical waveguiding structure to a detecting device at its exterior. This term ("input-output coupling") is specifically defined to include only the coupling of light from a source (e.g., a laser) into an optical waveguide or the coupling of light from an optical waveguide to a detector (e.g., a photodiode), and thus excludes the coupling of light between optical waveguides.

INS (CLASS 438)
intrinsic nondoped semiconductor

INSPECTION (CLASS 250)
A term implying a source of radiant energy, and/or means to irradiate an object by said source and a detector responsive to radiation from the object to provide a signal representing some characteristic of the object.

INSPECTION OR EXAMINATION (CLASS 378)
A term implying a source of X-ray energy, and/or means to irradiate an object by said source and a detector responsive to X-radiation from the object to provide an indication representing some characteristic of the object.

INSTRUCTION DATA (CLASS 345)
Data that represent an operation and identify its operands, if any. (also see: Data)

INSTRUCTION DATA (CLASS 711)
Data that represent an operation and identify its operands, if any.

INSTRUCTION DATA (CLASS 714)
Data that represent an operation and identify its operands, if any.

INSULATED-GATE FIELD EFFECT TRANSISTOR (IGFET) (CLASS 257)
A unipolar transistor with source, gate, and drain regions and electrodes, in which conduction takes place in a channel controlled by action of the voltage applied to the gate electrode of the device, in which the gate electrode is separated from the channel by an insulator layer.

INSULATED-GATE FIELD EFFECT TRANSISTOR (IGFET) (CLASS 438)
A unipolar transistor with source, gate, and drain regions and electrodes, in which conduction takes place in a channel controlled by action of the voltage applied to the gate electrode of the device, in which the gate electrode is separated from the channel by an insulator layer.

INSULATOR (CLASS 257)
A material which has a high resistance to the flow of electric current. It has such low electrical conductivity that the flow of current therethrough can usually be neglected.

INSULATOR (CLASS 338)
A body of such low conductivity that the flow of current therethrough can usually be neglected.

INSULATOR (CLASS 438)
A material which has a high resistance to the flow of electric current. It has such low electrical conductivity that the flow of current therethrough can usually be neglected.

INTEGRATED APPARATUS (CLASS 506)
Apparatus specifically designed for performing at least two different operations (e.g., synthesis and screening, etc.).

INTEGRATED CIRCUIT (CLASS 257)
See MONOLITHIC DEVICE (e.g., IC) as contrasted to HYBRID CIRCUIT.

INTERCALATES (CLASS 532)
See CLATHRATES AND INTERCALATES (INCLUSION COMPOUNDS).

INTERELECTRODE CAPACITANCE (CLASS 330)
The capacitive reactance for signal flow between any two electrodes of a vacuum tube, transistor or similar device inherent in their relationship to each other electrostatically and which for certain frequencies and voltages forms a path for the signal current usually detrimental to the operation of the circuit.

INTERELECTRODE IMPEDANCE (CLASS 330)
An impedance between electrodes of a vacuum tube, transistor, or similar device inherent in its structure, and manner and frequency of operation. This term is generic to inter-electrode capacitance above; and includes also input conductance caused by the transit time of electrons, etc.

INTERFACE (CLASS 709)
A connection between two elements so that they can work with one another.

INTERFACE (CLASS 718)
A connection between two elements so that they can work with one another.

INTERFACE (CLASS 719)
A connection between two elements so that they can work with one another.

INTERFACIAL BOND (CLASS 425)
Cohesion among common boundaries of particles material without a mechanical interlock.

INTERFERENCE (CLASS 359)
The interaction of two light waves which, as a result of their relative phases, produce a cancellation or reinforcement of wave energy.

INTERFERENCE (CLASS 372)
The interaction of two light waves which, as a result of their relative phases, produce a cancellation or reinforcement of wave energy.

INTERMEDIATE FREQUENCY (IF) (CLASS 725)
A frequency to which a signal wave is shifted locally as an intermediate step in transmission or reception.

INTERMEDIATE NEUTRONS (CLASS 376)
See Thermal Neutrons.

INTERMEDIATE-ARTICLE (CLASS 428)
A fully shaped article, all three dimensions of which are definite, even though one or more of these dimensions may be negligible. The article is not suitable for functional use in the claimed condition, but must be subjected to one or more further significant shaping steps to do more than merely occupy space. The following operations have been regarded as not involving a further significant shaping: (a) Assembling or uniting the article with other parts. (b) Distorting the article during an assembly operation to cause the article to conform to discrepancies in the size or shape of a coacting part. (c) Bonding or distorting those portions of the article which are to function as means for fastening the article to a coacting part, as, for example, the bending of ears or tabs. (Structural)

INTERNAL BATTERY (CLASS 204)
A device or means which generates an electrical current by chemical action within a zone of desired electrolysis without the need for an external source of electrical current.

INTERPOSER (CLASS 234)
An element which is movable to and from two or more positions, in one or more of which positions it is effective to condition a tool pair for actuation by its engagement with a tool of said pair and by thus completing a drive train for transmission of actuating force to the tool pair (either by the transmission of energy to an active tool element, or by blocking an inactive tool element in effective position).

INTERPUPILLARY DISTANCE (CLASS 351)
The distance between the centers of rotation of a pair of human eyes.

INTERSTAGE CIRCUIT OR COUPLING (CLASS 330)
The electrical circuit or network by means of which the output signal from the output electrodes of the amplifying device of one stage of a cascaded amplifier is conveyed to the input electrodes of the amplifying device of the following stage of the cascade amplifier.

INTRINSIC CONCENTRATION (CLASS 257)
The number of minority carriers in a semiconductor due to thermal generation of electron-hole pairs.

INTRINSIC CONCENTRATION (CLASS 438)
The number of minority carriers in a semiconductor due to thermal generation of electron-hole pairs.

INTRINSIC CONDUCTIVITY (CLASS 330)
Refers to a semiconductor material which for a certain range of conditions has its free electron carriers and free hole carriers in approximate balance, so that the semiconductor material is neither N- nor P-type. Sufficient change in temperature or sufficient radiant energy impinging upon such a body will upset this equilibrium.

INTRINSIC SEMICONDUCTOR (CLASS 257)
A pure semiconductor, i.e., one with no impurity atoms introduced therein.

INVERSION (CLASS 257)
A condition in a semiconductor material in which the concentration of minority carriers exceeds the concentration of majority carriers.

INVERSION (CLASS 438)
A condition in a semiconductor material in which the concentration of minority carriers exceeds the concentration of majority carriers.

INVERSION LAYER/CHANNEL (CLASS 257)
A region in a semiconductor material in which the concentration of minority carriers exceeds the concentration of majority carriers.

INVERSION LAYER/CHANNEL (CLASS 438)
A region in a semiconductor material in which the concentration of minority carriers exceeds the concentration of majority carriers.

INVESTMENT PATTERN (CLASS 164)
A pattern of a material having a low melting point for use in processes employing special techniques such as precision casting where pattern withdrawal would be difficult.

ION (CLASS 250)
An atom or molecule with at least one more or less electrons than protons. Electrons, per se, are not considered ions.

ION EXCHANGE (CLASS 423)
A process in which ions are chemically transferred from a material to a liquid or solid separatory substance or exchanger which, because of its chemical structure of loosely bound ions, has an affinity for certain ions and gives up some of its own ions to the material. The exchange occurs between ions of like charge; the exchanger substance can usually be regenerated by passing another material through it to elute the previously sorbed ions and replace them with the original kind of loosely bound ions. These ion exchange substances are usually resins or zeolites or chelates.

IONIC CATHODE (CLASS 313)
A virtual cathode formed by a discharge in a gas or vapor between two electrodes, the discharge serving to supply electrons to a third electrode. See subclass 588 for discharge devices having an ionic cathode.

IONIZATION (CLASS 250)
The process of adding to or removing from an electrically neutral atom or molecule one or more of its electrons. Note: Ionization, as sometimes used to denote the process of increasing the energy level of an atom or molecule to some state short of the above, is not encompassed by this definition. Such processes in this class are considered partial or incomplete ionization.

IONIZED (CLASS 376)
See (a) Fully Ionized and (b) Plasma.

IR (CLASS 438)
infrared

IRON GROUP (CLASS 075)
An element of the group Iron (Fe), Cobalt (Co), and Nickel (Ni).

IRON GROUP METALS (CLASS 257)
Fe, Co, Ni.

IRON GROUP METALS (CLASS 423)
Those metals in the central part of the third period of the periodic system consisting of Fe, Co and Ni, all of which form colored salts and 2 or more series of compounds.

ISFET (CLASS 438)
ion sensitive FET (i.e., CHEMFET)

ISOELECTRONIC (CLASS 438)
A condition in which two constituents have the same number of valence electrons.

ISOLATED TRIGLYCERIDIC FAT OR OIL (CLASS 426)
Fat or oil (as defined below) that is free of any of the plant or animal tissue from which it is derived.

ISOLATION (CLASS 257)
Prevention of the flow of electric current between electronic component parts of a solid-state electronic device.

ISOLATION (CLASS 438)
The separation or surrounding of active semiconductor regions or components with electrically insulative regions to prevent the flow of electrical current between the active semiconductor regions or between electronic component parts of a solid-state electronic device.

ISOPLANAR CMOS (CLASS 257)
A semiconductor device in which relatively thick regions of silicon dioxide, recessed into the semiconductor surface, are used to electrically isolate device areas and prevent parasitic device formation. More commonly called LOCOS CMOS.

ISOPLANAR CMOS (CLASS 438)
A semiconductor device in which relatively thick regions of silicon dioxide, recessed into the semiconductor surface, are used to electrically isolate device areas and prevent parasitic device formation. More commonly called LOCOS CMOS.

ISOPLANAR ISOLATION (CLASS 257)
A type of electric isolation in which relatively thick regions of silicon dioxide, recessed into the semiconductor surface, are used to electrically isolate device areas and prevent parasitic device formation. More commonly called LOCOS ISOLATION.

ISOPLANAR ISOLATION (CLASS 438)
A type of electric isolation in which relatively thick regions of silicon dioxide, recessed into the semiconductor surface, are used to electrically isolate device areas and prevent parasitic device formation. More commonly called LOCOS ISOLATION.

ITERATIVE DECONVOLUTION (CLASS 506)
Method for the identification of active library members which involves epeating the deconvolution strategy a certain number of times. Usually the initial library is divided into nonoverlapping subsets. The subsets are tested or screened separately, and the one with the greatest activity is identified. This subset is re-synthesized as a collection of simpler subsets which are tested for activity. The process is repeated until a unique library-member with a high level of activity is identified.

ITO (CLASS 438)
indium tin oxide (a TCO)

IVEC (CLASS 438)
isolation vertical capacitor cell

| A | B | C-CL | CM-CZ | D-DIM | DIM-DZ | E | F | G | H | I | J-K | L | M-MET | MET-MZ | N | O | P-PHA | PHE-PON | POR-PZ | Q | R | S-SEPA | SEPO-SMT | SN-STEM | STEP-SZ | T-TOG | TON-TZ | U | V | W | X-Z |

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