703.909.7722

USPTO Terms of Art — POR to PZ

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 |

PORE (CLASS 428)
A tiny opening, usually microscopic, through which certain fluids may pass. Generally, the pore opening is of such irregular direction that light will not pass through it. (Structural)

PORE FORMING (POROUS, MULTICELLULAR) (CLASS 501)
These terms embrace porous compositions, compositions intended to be further treated to make them porous or processes for effecting the porosity or multicellularity. A positive step for causing porosity must be recited and porosity which is the result of including a naturally porous material in the composition is not classified in the pore-forming subclasses of this class (501).

PORTAL (CLASS 049)
Structure defining an opening through a barrier for the passage of persons or things, e.g., the framing of a door or window opening.

PORTAL (CLASS 052)
Structure defining an opening through a barrier for the passage of light, air, persons or things, e.g., the framing for a door or a window opening.

PORTIONS (CLASS 347)
Elemental sections of a symbol* or mark*. An elemental section is not, itself, a symbol* or mark* as, for example, is an alphanumeric typeface used to create a picture or an image.

POSITIVE CARRIER (CLASS 257)
A charge carrier which has a net positive charge (e.g., a hole).

POSITIVE FEEDBACK (CLASS 330)
Signal feedback having at least some component thereof in phase with the signal at the point in the amplifier circuit where the signal feedback is applied.

POSITIVE IONS (CLASS 257)
Atoms which are missing a valence shell electron.

POTENTIAL BARRIER (CLASS 257)
The difference in electrical potential across a pn junction in a semiconductor.

POTENTIAL BARRIER (CLASS 438)
The difference in electrical potential across a pn junction in a semiconductor. See also barrier layer.

POTENTIAL HILL (CLASS 257)
See POTENTIAL BARRIER.

POTENTIATOR OR SYNERGIST (CLASS 424)
Denotes an agent (A) which will cooperatively act with an active ingredient for this class (B) to the extent that the total effect (A+B) will be greater than the sum of the two effects taken independently.

POTENTIATOR or SYNERGIST (CLASS 504)
The terms denote an agent (A) which will cooperatively act with an active ingredient for this class (B) to the extent that the total effect (A+B) will be greater than the sum of the two effects taken independently.

POTENTIOMETER (CLASS 330)
A network which permits the division of a voltage applied across it, including adjustable means to select a particular division of the voltage applied across the network.

POTTING (CLASS 257)
An embedding process in which an electronic component is placed in a can, shell, or other container and buried in a liquid dielectric polymer which subsequently changes to a solid material. The container is not removed from the finished part, and a release agent is not used. This process differs from casting - which involves a removable mold.

POTTING (CLASS 438)
An embedding process in which an electronic component is placed in a can, shell, or other container and buried in a fluid dielectric which subsequently is hardened material. Even though the container is not removed from the finished part, this is considered a molding operation since the fluid is confined to a definite shape during hardening.

POWDER (CLASS 428)
A mass of particles, that is, portions of matter so small that they are not ordinarily handled as individual units. According to Metals Handbook, 8th Edition, 1961, volume 1, page 28, powders currently used in powder metallurgy had a particle size within the range of 0.1 to 1000 microns in their largest dimension, as determined by screens or other suitable instruments. Powder particles generally are distinguished from filamentary particles in that their shape and length-to-diameter ratio are such that in the dry state the particles will not hold together as a massive article without the application of pressure or heat. (Structural)

POWER SOURCE (CLASS 475)
Agency for supplying rotational power to an input member* of a planetary gear transmission.

POWER SUPPLY (CLASS 330)
The source of electrical energy applied to an amplifying device which is controlled by the electric input signal. The term is used herein generically to include also a cathode heater supply, and bias voltage or current supply.

PPL (CLASS 438)
poly pad LOCOS

PR (CLASS 438)
photoresist

PRACTICE (CLASS 705)
A function directly related to the commercial activity of an enterprise (e.g. the exchange, buying or selling of commodities). This class additionally provides for subject matter described in the two paragraphs above in combination with cryptographic apparatus or method.

PRECIOUS METAL (CLASS 075)
Synonym for Noble Metal (q.v.).

PRECIOUS METAL (CLASS 204)
A metal element from the group consisting of gold (Au), platinum metals, and silver (Ag).

PRECIOUS METAL (CLASS 420)
Synonym for Noble Metal*

PRECIPITATION HARDENING (CLASS 148)
See definition for ageing above.

PRECURSOR (CLASS 117)
Any part, or all, of the starting material from which a single-crystal* is grown. This may be a material which undergoes one or more chemical reactions* prior to the actual crystal growth step. Hence, the term is not limited to the compound or composition present just immediately prior to the growth of the single-crystal*. Contrast with immediate-precursor*. See also nutrient*.

PREFILT (CLASS 210)
Material to be filtered, also known as feed, influent, intake.

PREFORM (CLASS 065)
Stock material that has been given a shape (the term preform is used interchangeably with article, product, parison and blank).

PREFORM (CLASS 249)
Stock material that has been given a shape.

PREFORM (CLASS 264)
An article or stock material or bland which is self sustaining and which may be subjected to a shaping or reshaping operation.

PREFORM (CLASS 425)
A self-sustaining intermediate object having a configuration that contributes in part to the shape or structure of a final product.

PREFORM OR PRESHAPE (CLASS 052)
A component of a building construction which is in completed form before its use at the job site. (Compare Module).

PREFORMED PRODUCT PART (CLASS 164)
A self-sustaining body which is to be incorporated in the final product as a distinct part of the same (e.g., insert, etc.).

PRESS MOLDING (CLASS 065)
See Subclass References to the Current Class, above, for a subclass reference to the term "press molding."

PRIMARY CELL OR BATTERY (CLASS 320)
A cell or battery that cannot have its available charge usefully increased (i.e., recharged like a secondary cell) by an electric current passing through it after having been discharged from a usefully charged condition (i.e., the chemical reaction is not reversible). (See the definition of Depolarization, above).

PRINCIPAL ELECTRODES (CLASS 315)
The "two spaced electrodes" referred to in the definition of electric space discharge devices, between which the discharge current is primarily intended to flow.

PRINT-LINE (CLASS 400)
A single row of imprinted, spaced character* symbols and word* groups that is part of the text being typed. It is usually a straight row, but particular characters of the line may be offset therefrom, as, for example, to imprint subscript (i.e., slightly below the line) or superscript (i.e., slightly above the line), or to imprint a mathematical or chemical formula without negating its characteristics as a line. It is usually formed and read across a page, either from left to right as in European languages, or from right to left, as in Semitic languages, but may also be formed and read parallel to one of the side margins* of a page* (i.e., "up" or "down"), as in some Oriental languages.

PRINT-POINT (CLASS 400)
Print-point is the typewriter industry term for the area or spot on the record-medium* that a type-member* is impressed against to imprint a character* on the record-medium. The print-point may be fixed or movable relative to a typewriter main frame as discussed in the definition of carriage* in this Glossary.

PRINTED CIRCUIT BOARD (CLASS 257)
A structure formed on one or more layers of electrically insulating material having electrical terminals and conductive material deposited thereon, in continuous paths, from terminal to terminal, to form circuits for electronic apparatus such as chips or substrates.

PRINTED CIRCUIT BOARD (CLASS 438)
A structure formed on one or more layers of electrically insulating material having electrical terminals and conductive material deposited thereon, in continuous paths, from terminal to terminal, to form circuits for electronic apparatus such as chips or substrates.

PRINTED CIRCUIT BOARD (CLASS 439)
A relatively thin, flat insulating sheet, panel, or plate having two or more circuit elements or conductors deposited, adhered, or otherwise formed on a planar surface thereof, the circuit elements or conductors being electrically insulated from one another or being, during use, at electrical potentials different from one another.

PRISMATIC LENS (CLASS 351)
A light-deflecting medium which diverges or converges the lightrays entering the eyes.

PROCESS (CLASS 709)
A coherent sequence of steps undertaken by a program to manipulate data such as an internal or external data-transfer operation, handling an interrupt, or evaluation of a function.

PROCESS (CLASS 718)
A coherent sequence of steps undertaken by a program to manipulate data such as an internal or external data-transfer operation, handling an interrupt, or evaluation of a function.

PROCESS (CLASS 719)
A coherent sequence of steps undertaken by a program to manipulate data such as an internal or external data-transfer operation, handling an interrupt, or evaluation of a function.

PROCESSING (CLASS 345)
Methods or apparatus performing systematic operations upon data or information exemplified by functions such as data or information transferring, merging, sorting, and computing (i.e., arithmetic operations or logical operations).

(1) Note. In this class, the glossary term data is used to modify processing in the term data processing; whereas the term digital data processing system refers to a machine performing data processing.

(2) Note. In an effort to avoid redundant constructions, in this class, where appropriate, the term address data processing is used in place of address data data processing.

PROCESSING (CLASS 706)
Methods or apparatus performing systematic operations upon data or information exemplified by functions such as data or information transferring, merging, sorting and computing (i.e., arithmetic operations or logical operations).

(1) Note. In this class, the glossary term data is used to modify processing in the term data processing; whereas the term digital data processing system refers to a machine performing data processing.

PROCESSING (CLASS 707)
Methods or apparatus performing systematic operations upon data or information exemplified by functions such as data or information transferring, merging, sorting, and calculating (i.e., arithmetic operations or logical operations).

(1) Note. In this class, the glossary term data is used to modify processing in the term data processing; whereas the term digital data processing system refers to a machine performing data processing.

(2) Note. In an effort to avoid redundant constructions, in this class, where appropriate, the term address data processing is used in place of address data processing.

PROCESSING (CLASS 709)
Methods or apparatus performing systematic operations upon data or information exemplified by functions such as data or information transferring, merging, sorting, and computing (e.g., arithmetic operations or logical operations).

(1) Note. In this class, the glossary term data is used to modify processing in the term data processing; whereas the term digital data processing system refers to a machine performing data processing.

(2) Note. In an effort to avoid redundant constructions, in this class, where appropriate, the term address data processing is used in place of address data data processing.

PROCESSING (CLASS 711)
Methods or apparatus performing systematic operations upon data or information exemplified by functions such as data or information transferring, merging, sorting, and calculating (i.e., arithmetic operations or logical operations). Note: In an effort to avoid redundant constructions, in this class, where appropriate, the term address data processing is used in place of address data data processing.

PROCESSING (CLASS 712)
Methods or apparatus performing systematic operations upon data or information exemplified by functions such as data or information transferring, merging, sorting, and computing (i.e., arithmetic operations or logical operations).

(1) Note.In this class, the glossary term data is used to modify processing in the term data processing; whereas the term digital data processing system refers to a machine performing data processing.

(2) Note.In an effort to avoid redundant constructions, in this class, where appropriate, the term address data processing is used in place of address data data processing.

PROCESSING (CLASS 713)
Methods or apparatus performing systematic operations upon data or information exemplified by functions such as data or information transferring, merging, sorting, and calculating (i.e., arithmetic operations or logical operations).

(1) Note. In this class, the glossary term data is used to modify processing in the term data processing; whereas the term digital data processing system refers to a machine performing data processing.

(2) Note. In an effort to avoid redundant constructions, in this class, where appropriate, the term address data processing is used in place of address data data processing.

PROCESSING (CLASS 714)
Methods or apparatus performing systematic operations upon data or information exemplified by functions such as data or information transferring, merging, sorting, and computing (i.e., arithmetic operations or logical operations).

(1) Note. In this class, the glossary term data is used to modify processing in the term data processing; whereas the term digital data processing system refers to a machine performing data processing.

PROCESSING (CLASS 718)
Methods or apparatus performing systematic operations upon data or information exemplified by functions such as data or information transferring, merging, sorting, and computing (e.g., arithmetic operations or logical operations).

(1) Note. In this class, the glossary term data is used to modify processing in the term data processing; whereas the term digital data processing system refers to a machine performing data processing.

(2) Note. In an effort to avoid redundant constructions, in this class, where appropriate, the term address data processing is used in place of address data data processing.

PROCESSING (CLASS 719)
Methods or apparatus performing systematic operations upon data or information exemplified by functions such as data or information transferring, merging, sorting, and computing (e.g., arithmetic operations or logical operations).

(1) Note. In this class, the glossary term data is used to modify processing in the term data processing; whereas the term digital data processing system refers to a machine performing data processing.

(2) Note. In an effort to avoid redundant constructions, in this class, where appropriate, the term address data processing is used in place of address data data processing.

PROCESSOR (CLASS 345)
A functional unit that interprets and executes instruction data.

PROCESSOR (CLASS 706)
A functional unit that interprets and executes instruction data.

PROCESSOR (CLASS 709)
A functional unit that interprets and executes instruction data.

PROCESSOR (CLASS 711)
A functional unit that interprets and executes instruction data.

PROCESSOR (CLASS 712)
A functional unit that interprets and executes instruction data.

PROCESSOR (CLASS 713)
A functional unit that interprets and executes instruction data.

PROCESSOR (CLASS 714)
A functional unit that interprets and executes instruction data.

PROCESSOR (CLASS 718)
A functional unit that interprets and executes instruction data.

PROCESSOR (CLASS 719)
A functional unit that interprets and executes instruction data.

PRODUCT (CLASS 072)
The object or material after an operation of the class type has been performed thereon.

(1) Note. The "Product" of one operation is properly denoted as "Work" for a subsequent operation.

PRODUCT (CLASS 083)
Material which has been treated by the cutting tool; the result of a cutting operation. (Note: material which is "product" for one cutting operation may be "work" for an ensuing operation).

PRODUCT (CLASS 227)
Article or material into which a member* has been driven.

(1) Note. The member is not considered part of the product but retains its identity as a member for any further operation to be performed on it.

PRODUCT (CLASS 228)
Solid material or article after an operation of the class type has been performed thereon.

(1) Note. The product of one operation may constitute work* for a subsequent operation.

PRODUCT (CLASS 234)
A workpiece* which has been completely processed by a device of the Class 234 type.

PRODUCT (CLASS 269)
The material that is placed in, or on, or in juxtaposition to, the work holder in the condition in which such material exists after it has been treated.

PRODUCT (CLASS 408)
Material which has been treated by the cutting tool; the result of a cutting operation. (Note: Material which is "product" for one cutting operation may be "work" for an ensuing operation).

PRODUCT (CLASS 425)
The material or article which has been shaped, reshaped or treated by the apparatus; the result of a shaping, reshaping or treating operation. (Note: material which may be "product" for one shaping operation may be "work" for an ensuing operation).

PROFILE (CLASS 425)
Representation of an object in outline, (e.g., a shape obtain by sculpturing, etc.).

PROFILE (CLASS 725)
For an individual, a concise biographical sketch, a measure of the extent to which one exhibits traits or abilities, or a measure of one s likes and dislikes (perhaps based on historical data).

PROGRAM (CLASS 234)
A predetermined timed sequence of auxiliary-operations* of a Class 234 machine (i.e., not directly including the selection of tools, but it may include a changeover from one code* system to another; cf. Auxiliary-operation*).

pROGRAM (CLASS 713)
A sequence of instructions that can be executed by a computer. The term can refer to the original source code or to the executable (machine language) version.

PROGRAM (CLASS 725)
A sequence of signals transmitted for entertainment or information.

PROGRAMMED-CONTROL-SYSTEM (CLASS 400)
Means for regulating the operation of a typewriter to perform a predetermined sequence of operations for typing, which means include a set of instructions which may be replaced or modified at will, to which instructions the typewriter mechanism responds by performing the sequence of operations. The instructions may be in the form of a tangible article such as a tape or card or disc with visible or invisible indicia thereon, or may be in the form of an intangible "computer program" including a "memory" and related circuitry, but in any event, must be related to the operation of a typewriter to be considered for this class.

PROJECTION OBJECTIVE OR PROJECTION LENS SYSTEM (CLASS 355)
A lens or lens systems used to optically form an image of an original onto a sensitized surface, viewing screen, or other image plane with or without magnification or reduction of the original in the image plane.

PROJECTION OBJECTIVE OR PROJECTION LENS SYSTEMS (CLASS 353)
Forms an image of the object on the viewing surface, and is located between the object and viewing surface.

PROJECTION PRINTER (CLASS 355)
See Copying Camera, defined herein.

PROJECTOR OR STEREOPTICON (CLASS 353)
A device for projecting an image of an object by passing light through or around the object or reflecting light from the object on a viewing screen for the purpose of more conveniently viewing the image of the object. The image is usually enlarged or reduced in size with reference to the object; and the image is also usually in a more convenient position for viewing or recording. Since projection is a common property of lenses and mirrors, the projectors in this class involve some structure for facilitating or enhancing the projection over what incidentally occurs in these optical elements. A projector generally includes (a) a concentrated light source from either an artificially or natural emanation, (b) a light paralleling element (e.g., condensing lens), (c) a holding or positioning device for the object to be projected, (d) a projection objective or projection lens system comprising one or more optical elements for directing the light after it passes through or is reflected from the object to form an image, and (e) a screen for receiving the image and making the image formed by this light available for use. The projectors in this class utilize natural or artificial (usually) light within the visible spectrum. The object to be projected is usually planar in natural with the plane extending transverse to the direction of projection, and may be transparent (e.g., slide or transparency) or reflective (e.g., opaque sheet). The projection may be limited to the outline of an opaque object such as a shadow, and in this case the object need not be planar. The term projector as used in this class designates the above structure either with or without the screen. In operation the object is positioned outside one focal plane of the projection lens system and the image is formed on a viewing surface outside the opposite focal plane of the projection lens system. The closer the object is to the one focal plane the farther the image will be from the other focal plane, and the bigger the image will be. In the projector the relative positioning of the object is usually obtained by moving the projection lens system and adjusting its focal length rather than by changing the position of the object. As indicated in FACSIMILE, TELEVISION, AND TELEGRAPHIC PRINTING, above, the projectors including or adapted for use with recording surfaces are classified elsewhere.

PROJECTOR, MOTION PICTURE (CLASS 352)
A device which forms a real optical image of successive elements of a motion picture sequence at such a rate that an illusion of motion is produced due to the persistence of vision.

PROM (CLASS 438)
programmable read only memory

PROMOTER (CLASS 423)
A substance which stimulates or aids the effect of a catalyst.

PROPELLING MEANS (CLASS 440)
The element of the propulsion unit which acts upon the surrounding fluid (air or water) to cause the vessel to move.

PROPS (CLASS 438)
planarization with resist/oxide and polysilicon

PROPULSION UNIT (CLASS 440)
The total combination of all elements including the engine, the propelling means, the casing, etc., involved in moving a vessel.

PROTEIN (CLASS 520)
Denotes polypeptides composed of more than 100 amino acids or having molecular weights greater than 10,000. Included herein are, for example: (a) The so-called simple proteins which yield alpha-amino acids upon hydrolysis (e.g., albumins, globulins, glutelins, prolamines, histones, sceleroproteins, etc.). (b) The conjugated proteins wherein protein is bound to some other molecule or group (e.g., nucleoproteins, glucoproteins, etc.). (c) Derived proteins which are the cleaved products of proteins, excluding the monomeric alpha-amino acids themselves (e.g., proteins, metaproteins, coagulated proteins, proteoses, peptones, peptides, etc.). (d) Reaction products wherein the protein has been reacted and wherein the final reaction product retains peptide linkages.

PROTEIN FOLDING (CLASS 977)
Process by which a protein assumes its functional shape; protein folding problem involves the prediction of the protein three-dimensional shape based on its amino acid sequence.

PROTEIN or PEPTIDE (CLASS 977)
Polymer of amino acid monomeric units linked via peptide bonds; peptide is a short polymer of amino acid units, commonly less than 100 such monomers therein.

PROTEINS (CLASS 930)
Compounds containing an amino acid sequence of more than 100 amino acids, at least two of which are different, bound mostly through normal peptide links.

PROTOCOL (CLASS 370)
A specific set of rules about data format and data transmission timing between two devices.

PROTOCOL (CLASS 709)
A set of rules or processes which enable computers to exchange information with as little error as possible.

PROTOCOL (CLASS 718)
A set of rules or processes which enable computers to exchange information with as little error as possible.

PROTOCOL (CLASS 719)
A set of rules or processes which enable computers to exchange information with as little error as possible.

PSD (CLASS 438)
photosensitive diode or dielectric

PSG (CLASS 438)
phosphosilica glass

PTC (CLASS 438)
positive temperature coefficient

PTH (CLASS 438)
plated through-hole

PULL TAB (CLASS 413)
A member operated by the users fingers and used to open the container.

PULLEY (CLASS 474)
A device rotatable about an axis and having a drive face radially spaced from the axis of rotation for intended power transferring engagement with a belt* to drive the belt on its endless path or to extract power from the belt to drive an output load device.

PULSATING CURRENT (CLASS 363)
A nonuniform electron flow which varies periodically but does not reverse its direction.

PULSE (CLASS 375)
A variation of a voltage or current normally having a constant value. This variation is characterized by a rise and a decay approaching infinitesimal duration.

PULSE WAVE (CLASS 329)
An electrical or electromagnetic repetitious nonsinusoidal wave. Examples are square wave, saw-tooth wave, or trapezoidal wave.

PULSE WAVE (CLASS 332)
Is an electrical or electromagnetic repetitious nonsinusoidal wave. Examples are square wave, saw-tooth wave, or trapezoidal wave.

PUMP (CLASS 415)
An apparatus used for adding energy to fluid material (gas or liquid).

PUNCHING (CLASS 083)
The cutting of a discrete product out of the confines of a workpiece through the thickness of the workpiece so that the cut does not intersect any edge (exterior or interior) of the workpiece.

PUNCHTHROUGH (CLASS 257)
Expansion of a depletion region* from one junction to another junction in an active solid-state device.

PUNCHTHROUGH (CLASS 438)
Expansion of a depletion region* from one junction to another junction in an active solid-state device.

PUNTY (CLASS 065)
See Pontile

PURGING (CLASS 431)
The removal of unwanted material.

PURIFY (CLASS 065)
See Subclass References to the Current Class, above, for a subclass reference to the term "purify."

PURPLE PLAGUE (CLASS 257)
A brittle, inter metallic electrically conductive compound which has a purplish color and is formed when aluminum and gold, used as electrical contact materials in semiconductor electronic devices, contact each other and interact. It is usually considered undesirable because it breaks easily, reduces device reliability, and lowers product yield.

PUSH-PULL STAGE (CLASS 330)
Includes two amplifiers each as defined above under "AMPLIFIER", the input electrodes of each of the amplifying devices of the two amplifiers being balanced to ground or some other convenient electrical reference plane, the source of electrical signal being such, and so coupled to the input electrodes, that at any instant the signal on each input electrode is substantially equal and opposite in sign to the signal on the other input electrode; and wherein the signal on the output electrodes of each of the amplifying devices is similarly balanced to a convenient electrical reference plane.

(1) Note. A balanced signal circuit is treated in this class as a special case of a single source or a single load. See Balanced Circuit.

(2) Note. A push-pull amplifier is treated in this class as a single channel, having a single source and a single load.

PUT (CLASS 438)
programmable unijunction transistor

PVD (CLASS 438)
physical vapor deposition

PWB (CLASS 438)
printed wiring board

PYRO-ELECTRIC LAMP (CLASS 313)
An electric lamp which has as the light emitting body a material which is a second class conductor. The lamps are designed to have the pyro-electric body heated by a separate source until the pyro-electric material becomes conductive and then the current flow through the pyro-electric body maintains the second class conductor material at a temperature at which it emits light.

PYROMETALLURGY (CLASS 075)
A somewhat inexact term for processes carried out at relatively high temperatures, usually in furnaces, in which metalliferous material or metal is treated to prepare free metal, to purify or to refine free metal, or to prepare intermediate materials more suitable for use in preparing free metal (e.g., smelting, bessemerizing, roasting of ores, etc.).

PZT (CLASS 438)
lead zirconate titanate

| 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 |

back to top