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USPTO Terms of Art — G

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 |

GAGGER (CLASS 164)
A piece of metal used to support sand in deep pockets of sand molds.

GAIN (CLASS 257)
The ratio of the magnitude of the electrical output of a device to the magnitude of its electrical input.

GAIN (CLASS 330)
The ratio of the amplifier output power, voltage, or current to the amplifier input power, voltage or current.

GAIN CONTROL ELECTRODE (CLASS 330)
An electrode designed, together with the electron tube in which it is incorporated, to receive a D.C.. control voltage (other than the signal but which is usually derived from the signal), whereby changes in the control voltage change the gain of the tube.

GALLIUM ARSENIDE (CLASS 257)
A semiconducting chemical compound which is often used in active solid-state devices.

GAMMA RAY (CLASS 378)
In this class the term "gamma ray" is considered to be synonymous with the term "X-ray". Gamma rays are usually considered to be produced by some natural phenomenon such as the decay of an atomic nucleus whereas X-rays are usually considered to be produced by an electronic tube or other manufactured device.

GANG MOLD (CLASS 425)
A single mold having plural shaping compartments in which plural articles are formed by one operation.

GARNET, SYNTHETIC (CLASS 117)
Term applied to crystals having the same complicated cubic structure as mineral garnets or beryl, but usually without the silicon; e.g., yttrium-iron, Y3Fe5O12. Other variations include substituting part of the yttrium and/or iron with valence-equivalent metals.

GAS (CLASS 095)
Matter of very low density and viscosity, relatively great expansion and contraction with changes in pressure and temperature, that is readily diffusive, with a tendency to expand indefinitely, with molecules in free movement. The term "gas" includes "vapor" (q.v.).

GAS (CLASS 096)
Matter of very low density and viscosity, relatively great expansion and contraction, with changes in pressure and temperature, that is readily diffusive, with a tendency to expand indefinitely, with molecules in free movement. The term "gas" includes "vapor" (q.v.).

GAS (CLASS 216)
Matter of very low density and viscosity, and relatively great expansion and contraction with changes in pressure and temperature, that is readily diffusive, with a tendency to expand indefinitely, with molecules or atoms in free movement. The term gas includes vapor.

GAS OR VAPOR DISCHARGE DEVICE (CLASS 315)
Any type of electric space discharge which, as claimed, depends upon ionization of a gas or vapor for its operation. Discharge devices which have their discharge electrodes in an unconfined (non-enclosed) atmosphere as well as those having their discharge electrodes in a confined (enclosed) atmosphere are included in this definition.

GAS OR VAPOR GENERATING MATERIAL (CLASS 313)
Solid or liquid material which is placed within the envelope and generates a gas or vapor by virtue of a chemical change, by volatilization, or by giving off an absorbed gas or vapor. It may do this during normal operation or it may be caused to do so by treatment preliminary to placing the device in operation.

GAS OR VAPOR TUBE (CLASS 330)
An electric discharge device which depends, for its operation, at least in part, upon ionization of a gas or vapor.

GASEOUS FLUID MIXTURE (CLASS 095)
The phrase "gaseous fluid mixture" is used throughout the definitions to mean (a) a gas and solid or liquid particles entrained therein or (b) a plurality of gases.

GASEOUS FLUID MIXTURE (CLASS 096)
The phrase "gaseous fluid mixture" is used throughout the definitions to mean (a) a gas and solid or liquid particles entrained therein or (b) a plurality of gases.

GASEOUS SPACE DISCHARGE DEVICE (CLASS 331)
A space discharge device having at least two electrodes in a gaseous or vapor medium, conduction between the electrodes taking place by ionization of the medium.

GASEOUS SUSPENSION (CLASS 075)
The suspension of solid in gas. This may be in a fluidized bed (q.v.) or in any other system (such as a conduit) where solids are suspended in a gas.

GATE (CLASS 164)
The end of the runner where the molten metal enters the mold.

GATE (CLASS 257)
The control electrode or region of a field effect transistor, located between the source and drain electrodes, and regions thereof.

GATE (CLASS 352)
A portion of a motion picture device which positions the motion picture carrier in the plane of focus of the optical system of the motion picture device.

GATE (CLASS 438)
The control electrode or control region that exerts an effect on a semiconductive region directly associated therewith, such that the conductivity characteristic of the semiconductor region is altered in a temporary manner, often resulting in an on-off type switching action. The control electrode or control region of a field effect transistor is located between the source and drain electrodes, and regions thereof.

GATE ARRAY (CLASS 257)
A repeating geometric arrangement of groups of active solid-state devices, each group being connectable into a logic circuit, in one integrated, monolithic semiconductor chip.

GATE ARRAY (CLASS 438)
A repeating geometric arrangement of groups of active solid-state devices, each group being connectable into a logic circuit, in one integrated, monolithic semiconductor chip.

GATE CHARGE (CLASS 257)
The electrical charge on a gate electrode.

GATE CONTROLLED DIODE (CLASS 257)
A three terminal semiconductor diode with the ability to be turned on or off by a pulse applied to its gate electrode.

GATE CONTROLLED DIODE (CLASS 438)
A three terminal semiconductor diode with the ability to be turned on or off by a pulse applied to its gate electrode.

GATE TRIGGER CURRENT (CLASS 257)
The amount of current needed to commence gate current flow in a four layer semiconductor device (e.g., a thyristor).

GATE TRIGGER VOLTAGE (CLASS 257)
The amount of voltage needed to begin gate current flow in a four layer semiconductor device (e.g., a silicon controlled rectifier).

GATHERER (CLASS 065)
Means used to remove discrete charges of molten glass from a supply.

GDMS (CLASS 438)
glow discharge mass spectroscopy

GEAR TRANSMISSION: (CLASS 477)
Mechanism including at least one gearing power path*, said mechanism being capable of changing the speed ratio* or rotational direction between a mechanical output of an engine* and a load*.

GEARING POWER PATH: (CLASS 477)
Mechanism including relatively rotatable bodies having engaging surfaces or which are drivingly connected by a belt or chain whereby a rotatable body will impart to or receive rotary motion or power from another rotary body by rolling contact.

GEL (CLASS 210)
A colloidal dispersion of a solid in a liquid with a jellylike texture. Use of a gel in chromatography is in subclass 635, and separating the constituents of a gel are in subclass 702.

GEL (CLASS 510)
Denotes a colloidal solution of liquid in solid having a thick consistency with little or no tendency to flow.

GENE THERAPY (CLASS 977)
Treatment of a disease or disorder via insertion of a foreign gene into a cell or cells in order to change the genetic content thereof.

GENERAL PURPOSE DIGITAL COMPUTER (CLASS 706)
Digital computer having a single central processing unit, primarily storage, at least one input device, and a display media.

GENERAL TREATING CLASS (CLASS 426)
Class that includes the treatment of an edible, per se.

GENRE (CLASS 725)
A category of video composition characterized by a particular style, form, or content.

GEOGRAPHIC (CLASS 725)
Belonging to or characteristic of a particular region.

GERMANIUM (CLASS 257)
A semiconductor material used in active solid-state devices.

GETTERING (CLASS 117)
A process or operation that reduces or removes impurities or defects from a region either by complete removal (e.g., volatilization) or by transporting them to another region.

GETTERING (CLASS 438)
The elimination or reduction of unwanted constituents (i.e., impurities) or defects from a substrate.

GETTERS (CLASS 313)
Materials which, when used in closed containers, reduce the gas or vapor content of the container. A getter may react with the gas or vapor in the container to form a solid nonvaporizable material, or to adsorb or absorb the gas or vapor, or may reduce the amount of the gas or vapor in the container in any other way. The material may be a getter for one gas or vapor and may not have any effect upon another gas or vapor.

GGG (CLASS 117)
Gadolinium Gallium Garnet. Composite oxide compound Gd3Ga5O12. Useful as substrate in magnetic bubble domain memory and as man-made gemstones.

GILD (CLASS 438)
gas immersion laser doping

GLASS (CLASS 065)
An inorganic product (a) the constituents of which generally include a "glass former" (e.g., As2O3, B2O3 GeO2, P2O5, SiO2, V2O5) which has an essential characteristic of creating or maintaining, singly, or in a mixture, that type of structural disorder characteristic of a glassy condition, other oxides which approach glass forming properties (e.g., A12O3, BeO, PbO, Sb2O3 TiO2, ZnO and ZrO2) as well as oxides that are practically devoid of glass forming tendencies (e.g., BaO, CaO, K2O, Li2O, MgO, Na2O and SrO), however, pure and modified silica, silicon and slag are also included; (b) formed by fusion and cooled to a rigid condition generally without crystallization; (c) having no definite melting point (whereby the mass has the characteristic of passing through a plastic state before reaching a liquid state when heated); (d) incapable in the solid state of permanent deformation; and (e) which fractures when subject to deformation tension.

GLASS (CLASS 216)
Must have all of the attributes described in 1-5 below: (1) An inorganic product the constituents of which generally include a glass former (e.g., As2O3, B2O3, GeO2, P2O5, SiO2, V2O5) which has an essential characteristic of creating or maintaining, singularly, or in a mixture that type of structural disorder characteristic of a glassy condition, other oxides which approach glass forming properties (e.g., Al2O3, BeO, PbO, Sb2O3, TiO2, ZnO, and ZrO2), as well as oxides that are practically devoid of glass forming tendencies (e.g. BaO, CaO, K2O, Li2O, MgO, Na2O, and SrO). Pure and modified silica, silicon, and slag are also included. (2) Formed by fusion and cooled to a rigid condition generally without crystallization. (3) Having no definite melting point, whereby the mass has the characteristic of passing through a plastic state before reaching a liquid state when heated. (4) Incapable in the solid state of permanent deformation. (5) Fractures when subject to deformation tension.

GLASS (CLASS 428)
An amorphous, hard, brittle, often transparent material comprising a fused mixture of the silicates of the alkali and alkaline earth, or heavy metals. Glass is not considered to be included in the term "metal compound" for purposes of this class, unless specifically included in a title or definition. (Nonstructural or Composition)

GLASS (CLASS 501)
Inorganic compositions which solidify from the molten state without crystallizing, to have that molecular disorder characteristic of the glass state, which have no definite melting point, are incapable in the solid state of permanent deformation, which fracture when subjected to deformation tension and include as components at least one "glass former" material.

(1) Note. Typical glass formers are, e.g., oxides of silicon, beryllium, boron, germanium, phosphorus, vanadium, lead, tin, zinc, zirconium, and titanium, as well as such nonoxide compounds as GeS, metal fluorides, or iodides, and some metallic selenides, tellurides, arsenides, and phosphides. These compositions may also include other oxides devoid of glass forming tendencies, e.g., oxides of alkali metals, alkaline earth metals, and magnesium.

(2) Note. Many ceramic compositions containing primarily slag, the by product of metal refining and smelting are considered to be glasses.

(3) Note. Neither transparency to light nor the absence of color are necessary for a composition to be considered as a glass for the purpose of this class.

(4) Note. Water glass, clear synthetic resin compounds, and isinglass are not considered to be glass for the purpose of classification in Class 501.

(5) Note. Organic, noncrystalline solid materials, such as synthetic resins which may be referred to as organic glasses, are not considered to be glass for the purpose of classification in Class 501.

GLASS (CLASS 520)
An amorphous, hard, brittle, often transparent material comprising a fused mixture of the silicates of the alkali alkaline earth, or heavy metals.

GLASS TREATING (CLASS 065)
Effecting a change in a physical or chemical property of glass, generally involving specific heating followed by controlled cooling.

GLASS WORKING (CLASS 065)
Molding, shaping, severing of uniting of glass while in a plastic state.

GLOW DISCHARGE (CLASS 372)
A type of discharge in which a uniform glow is created through the entire volume of a gaseous active media rather than a channel or spark discharge through a restricted portion of the active media.

GLOW DISCHARGE (CLASS 373)
The phenomenon of electrical conduction in gasses shown by a slight luminosity, without great hissing, or noise, and without appreciable heating, or volatilization of the electrode, when the electrostatic pressure exceeds a certain value.

GLOWER (CLASS 313)
Any body made of a material which when heated by the passage of an electric current therethrough emits light rays. The term glower includes filaments and also includes other bodies which are not of filamentary dimensions such as, rods and bars made of second class conductors.

GOB (CLASS 065)
A discrete portion of molten glass (a) delivered by a feeder or (b) gathered on a punty or blow pipe.

GRAETZEL CELL (CLASS 977)
Photovoltaic cell that uses nanoscale titanium dioxide and organic dye to obtain electrical current from incident light.

GRAFT COPOLYMER (CLASS 520)
The structure is given, i.e., a long solid polymer backbone (substrate) is attached to a pendant (nonterminal) polymer or copolymer (superstrate) having at least three reactant units in length or; The copolymer is so named as a graft providing that the disclosure is otherwise silent as to the structure or, if structure is likewise recited, it is consistent with that required in A. above, or the structure can be ascertained from the following limiting process conditions: (a) the disclosure states there is a reaction between a solid polymerized unsaturated reactant and an unpolymerized unsaturated reactant in the presence of a catalyst or; (b) the disclosure does not state whether or not any reaction has occurred between the solid polymerized unsaturated reactant and the unpolymerized unsaturated reactant, but relates that a product is obtained which is inseparable by a variety of physical techniques such as, extraction, precipitation, ion exchange, etc. In the absence of one or more of these requirements the reaction is considered to produce a polymeric blend.

GRAFT-TYPE COPOLYMER (CLASS 520)
The structure is given, i.e., a long solid polymer backbone (substrate) possessing nonterminal active sites or functional groups is attached (grafted) through a chemical reaction of these functional groups or sites to an ethylenic reactant containing one or more functional groups or active sites. The reaction product may or may not possess unsaturated pendant groups depending on the mode of chemical reaction. The following examples will illustrate this point: (a)> (b)> The structure can be ascertained when: There is disclosed a reaction between the solid polymerized unsaturated reactant and the unpolymerized unsaturated reactant which reaction uses specific art-recognized terms, e.g., "esterification, acylation, sulfonylation, cyanoethylation, addition to, reaction or condensation with, halogenation, nitration, sulfonation, alkylation, amination, etc.". Examples of these reactions would be: (a)> (b)> There is disclosed an interaction between two or more solid polymers through their respective nonterminal functional groups or through the use of an intermediate reactant or chemical agent, e.g., causing salt, ester, amide, urea formation. Examples of these reactions would be (a) Contacting polypropylene and polyethylene with benzoyl peroxide. (b) Contacting polyvinylamine and polyallylamine with glyoxal. (c) Contacting chloromethylated polystyrene with polyvinylamine. (d) Contacting polyacrylic acid with polyvinylamine. In the absence of one or more of these requirements the reaction is considered to produce a polymeric blend. See the Glossary for the definition of the terms "specified intermediate condensation product" (SICP) and "specified polymer-forming intermediates" (SPFI).

GRAIN (CLASS 099)
This term is interpreted to include those seeds to which the term is ordinarily applied, e.g., wheat, oats, cottonseed, corn, coffee beans, barley, etc., and to exclude larger vegetables such as beets, nuts, potatoes, etc.

GRAIN (CLASS 144)
Fibers of wood* that extend along the length of a tree*.

GRAIN (CLASS 460)
This term is interpreted to include those seeds to which the term is ordinarily applied, e.g., wheat, oats, cotton seeds, corn, coffee, bean, barley, etc., and to exclude larger vegetables such as beets, nuts, potatoes, etc.

GRAIN OR POWDER (CLASS 149)
In the armament arts refers to a charge exhibiting certain definite structural characteristics, but as used in this class the mere reference to "grain" or "powder" without recitation of definite structure, or with reference merely to nominal shape, will be construed as being virtually synonymous with the term "granule" and with finely divided "particulate" or "powdered" material.

GRAPHENE (CLASS 977)
Two-dimensional sheet form of fullerene.

GRAPHITE (CLASS 428)
Inorganic material as is carbon. (Nonstructural or Composition)

GRAPHOEPITAXY (CLASS 438)
The growth of a single crystalline layer across the surface of a nonsingle crystalline substrate by commencing growth at a seeding portion/region thereof.

GRATE (CLASS 460)
A separating device to separate the grain from the straw after threshing.

GRAVITY, BY (CLASS 210)
A separation process depending on differences in density to separate freely movable constituents such as cream rising to the top of the milk. Draining or allowing a liquid to drip from solids held by a screen or grid is not gravity separation.

"GREEN" PRODUCT (CLASS 425)
Self-sustaining but not permanently set or cured, (e.g., unvulcanized rubber, etc.).

GRID (CLASS 330)
Is used in the conventional sense referring to the intended use and structure of the element in an electronic tube, particularly in a vacuum tube.

GRID ELECTRODE (CLASS 313)
An electrode having one or more apertures therein, usually formed of open-work material, such as wire mesh, perforated sheet material, or of wires or bars as of coiled wire, or other foraminous structure, and sometimes used as the control electrode in a discharge device. As pointed out in the definition of "control electrode" above, the terms "grid electrode" and "control electrode" are not synonymous in this class.

GRID OR GRID ELECTRODE (CLASS 330)
An electrode having one or more apertures therein, usually formed of open-work material such as wire mesh, etc.., and usually used as the signal or control electrode, or auxiliary electrode of an electron tube.

GRIN-SCH (CLASS 438)
graded index separate confinement heterostructure

GRIPPER (CLASS 226)
(n) As used in this class, a movable device comprising a plurality of substantially opposed surface elements (commonly termed jaws) relatively movable toward and away from a common line or plane (to engage corresponding opposed areas on material) and hold such material frictionally to the elements, whereby additional movement imparted to the elements in a material advancing direction will also be imparted to the material.

GROUND (CLASS 037)
This term is applied to the solid surface of the earth or the floor of a body of water, especially a sea, river, or lake.

GROUP FORMING (CLASS 053)
The accumulating or gathering of an associated collection of articles, of the same or of different characteristics, by means of a plurality of feeding operations, for placement as a contents in a single cover. An insert sheet or coupon to be packaged with other goods is considered to be an article of different characteristics from the goods. On the other hand, an inner cover, or a section of plural section cover is not considered to be a part of the contents of an outer cover. See "CONTENTS".

GTO (CLASS 438)
gate turn-off

GUIDE (CLASS 083)
Passive means to direct the movement of something (e.g., work, product, machine part) in a desired path. (Note: although a guide may be movable for the purpose of adjustment, yet it accomplishes its directing function by presenting an obstacle to movement in an undesired direction, rather than by causing the directed thing or part to move with it).

GUIDE ROLL (CLASS 474)
A device rotatable about an axis and having a belt*-contacting face radially spaced from the axis of rotation for intended engagement with the belt to aid in directing the belt along an intended path of travel. A guide roll, as distinguished from a pulley*, is not intended to provide driving power to, or extract power from, a belt.

GULL-WING (CLASS 257)
The name given to lead configurations of some surface mounted devices. Gull wings extend from the side of a component package and have an L-shaped bend at component ends, which extend down to the substrate surface and away from the component.

GUM (CLASS 428)
See natural oil, gum, rosin or lac below. (Nonstructural or Composition)

GUNN DIODE (CLASS 257)
A diode in which electrons under the influence of sufficiently high electric fields are transferred between energy valleys of different momentum in the conduction band of the active semiconductor device material or holes under the influence of sufficiently high electric fields are transferred between energy valleys of different momentum in the valence band of the active semiconductor device material. A Gunn diode does not normally have a pn junction and cannot be used as a rectifier.

GUNN DIODE (CLASS 438)
A diode in which electrons under the influence of sufficiently high electric fields are transferred between energy valleys of different momentum in the conduction band of the active semiconductor device material or holes under the influence of sufficiently high electric fields are transferred between energy valleys of different momentum in the valence band of the active semiconductor device material. A Gunn diode does not normally have a pn junction and cannot be used as a rectifier.

GUNN EFFECT (CLASS 257)
An inter valley transfer effect wherein electrons under the influence of sufficiently high electric fields are transferred between energy valleys of different momentum in the conduction band of the active semiconductor device material, or holes under the influence of sufficiently high electric fields are transferred between energy valleys of different momentum in the valence band of the active semiconductor device material.

GUNN EFFECT (CLASS 438)
An intervalley transfer effect wherein electrons under the influence of sufficiently high electric fields are transferred between energy valleys of different momentum in the conduction band of the active semiconductor device material, or holes under the influence of sufficiently high electric fields are transferred between energy valleys of different momentum in the valence band of the active semiconductor device material.

| 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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