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USPTO Terms of Art — H

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 |

HALL EFFECT DEVICE (CLASS 257)
An active solid-state device in which a current is flowing and is in a magnetic field perpendicular to the current, and in which a voltage is produced that is perpendicular to both the current flow direction and the magnetic field direction.

HALL EFFECT DEVICE (CLASS 438)
An active solid-state device in which a current is flowing and is in a magnetic field perpendicular to the current, and in which a voltage is produced that is perpendicular to both the current flow direction and the magnetic field direction.

HALOGEN (CLASS 987)
Limited to fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).

HALOGEN* (CLASS 075)
An element of the group Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), and Astatine (At).

HALOGENATED HYDROCARBON (CLASS 514)
Denotes a compound containing only carbon, hydrogen, and halogen, or only carbon and halogen.

HALOGENATED HYDROCARBON (CLASS 520)
Denotes a compound containing only carbon, hydrogen, and halogen, or only carbon and halogen.

HALOGENS (CLASS 257)
F, Cl, Br, I, At.

HALOGENS (CLASS 423)
Also known as halogenides, the nonmetallic elements of the seventh group of the periodic system and consisting of F, C1, Br, I, At.

HALOGENS (CLASS 588)
The elements (F, Cl,Br, I, or At).

HAMMER HEAD (CLASS 173)
The striking element of an impacting device.

HAND (MANIPULATE) (CLASS 269)
The term "hand" (or "manipulate") is used in the sense of "by contact with a living being" and includes hand, foot, head, etc. Specific recital of foot, pedal, etc. is limited to such recital.

HAND-ACTUATED(*); HAND-OPERATED(*) (CLASS 024)
The term hand-actuated or hand-operated is used in the sense of like contact with a living being and solely applies to the use of the hand in operating a fastener (i.e., moving portions of the fastener relative to each other) of the Class 24 type.

HAPTEN (CLASS 436)
A substance that can react selectively with antibodies of the appropriate specificity but stimulates the production of these antibodies in an animal only when it is coupled to a carrier.

HARMFUL CHEMICAL SUBSTANCE (CLASS 588)
Harmful chemical substances are chemical waste substances which are too hazardous or toxic to be discarded in an ordinary municipal landfill.

HARMONIC OR SINE WAVE OSCILLATOR (CLASS 331)
A free running oscillator for generating sinusoidal or nearly sinusoidal waves. They usually utilize a resonator of the lumped LC or the distributed parameter type as the frequency determining element.

HAZARDOUS WASTE (CLASS 435)
Material that when present in the environment produces for man and other living organisms a dangerous, risky, or perilous environmental situation in so for as the physiological well being of the organism is concerned (e.g., all caustic chemicals, irritants, cancer causing agents, and other tumor producing materials).

HAZARDOUS WASTE (CLASS 588)
Materials that when present in the environment produce for man and other living organisms an acute and/or cumulative effect that is a dangerous, risky, or perilous environmental situation in so far as the physiological well being of the organism is concerned (e.g., caustic chemicals, irritants, cancer causing agents, and other tumor producing materials).

HBT (CLASS 438)
heterojunction bipolar transistor

HDC (CLASS 438)
high dielectric constant

HDI (CLASS 438)
high density interconnects

HDMI (CLASS 438)
high density multilayer interconnects

HEAD (Marker) (CLASS 347)
The section of the marking device which produces the visibly distinguishable or latent symbol or mark on the medium in accordance with an information signal.

HEADEND (CLASS 725)
In broadband networks, the central location that has access to signals traveling in both inbound and outbound directions. The logical root of the broadband coaxial cable system.

HEADER (CLASS 053)
The means to either (1) hold and position, (2) hold and secure, or (3) juxtaposition and secure a separate closure element during infeed.

HEADER (CLASS 257)
A slab-like or flat plug-in base for a package that is designed to be used with a cover or lid.

HEARTH (CLASS 373)
The part of the furnace upon which the charge is placed and melted down, or refined.

HEAT (CLASS 374)
Kinetic energy of macroscopically non-observable random modes of motion of atoms and molecules.

HEAT SINK (CLASS 257)
Devices used to absorb or transfer heat away from heat sensitive devices or device components.

HEATED CATHODE (CLASS 313)
Either a directly heated cathode or an indirectly heated cathode.

HEAVY METAL (CLASS 260)
Denotes any metal having a specific gravity greater than 4 and, as employed herein, includes arsenic and antimony.

HEAVY METAL (CLASS 424)
Denotes any metal having a specific gravity greater than 4 and as employed herein includes arsenic and antimony.

HEAVY METAL (CLASS 532)
This term denotes any metal having a specific gravity greater than four and includes arsenic.

HEAVY METAL (CLASS 588)
A metal other than the following (light) metals, lithium (Li), sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), Francium (Fr), Calcium (Ca), Strontium (Sr), Barium (Ba), Beryllium (Be), Magnesium (Mg), and Aluminum (Al).

HEAVY METAL* (CLASS 075)
A metal other than a light metal (q.v.).

HEAVY METALS (CLASS 257)
Metals other than light metals - see LIGHT METALS.

HELICAL COIL SPRING (CLASS 267)
an element in the form of a serial lying on the surface of a cylinder and which exhibits resilient characteristics when distorted from its original shape.

HEMT (CLASS 438)
high electron mobility transistor (Hetero MESFET)

HERBICIDE (CLASS 504)
The term denotes a compound or composition which adversely affects the growth or the life span of a plant.

HET (CLASS 438)
hot electron transistor (bipolar)

HETERO (CLASS 435)
Containing only O, N, S, Se, or Te in addition to carbon in a ring.

HETERO ATOM (CLASS 008)
The hetero atoms are nitrogen, oxygen, sulfur, selenium, and tellurium.

HETERO RING (CLASS 008)
A hetero ring is a ring which contains only carbon and hetero atoms.

HETERO RING (CLASS 514)
Denotes the presence of one or more carbon atoms covalently bonded in a closed ring with at least one atom of oxygen, nitrogen, sulfur, selenium or tellurium and having no other atoms in the ring.

HETERO RING (CLASS 532)
This term denotes a ring having carbon and at least one atom from the group consisting of nitrogen, oxygen, sulfur, selenium and tellurium as ring members; and contains no other element as a ring member.

HETEROCYCLIC (CLASS 260)
Denotes the presence of a ring whose members are composed of at least one carbon and one or more atoms of the elements taken from the group consisting of nitrogen, oxygen, sulfur, selenium, and tellurium.

HETEROCYCLIC (CLASS 424)
Denotes the presence of one or more carbon atoms covalently bonded in a closed ring with at least one atom of oxygen, nitrogen, sulfur, selenium or tellurium and having no other atoms in the ring.

HETEROCYCLIC (CLASS 430)
Organic compound containing a ring composed of carbon and at least one element from the group consisting of nitrogen, sulfur, selenium, tellurium, and oxygen.

HETEROCYCLIC (CLASS 510)
Denotes an organic compound wherein one or more carbon atoms are covalently bonded in a ring system with at least one hetero atom of oxygen, sulfur, nitrogen, selenium, or tellurium and having no other atoms in the ring.

HETEROCYCLIC (CLASS 520)
Denotes an organic compound wherein one or more carbon atoms are covalently bonded in a ring system with at least one hetero atom of oxygen, sulfur, nitrogen, selenium, or tellurium and there are no other different atoms in the ring.

HETERODYNE FREQUENCY (CLASS 331)
Beat frequency (which see).

HETEROJUNCTION /HETEROINTERFACE (CLASS 257)
An interface between two dissimilar semiconductor materials. For example, one material may by InAs and the other may be InAlAs, or one material may be GaAs and the other material may be GaAlAs.

HETEROJUNCTION/HETEROINTERFACE (CLASS 438)
An interface between two dissimilar semiconductor materials. For example, one material may by InAs and the other may be InAlAs, or one material may be GaAs and the other material may be GaAlAs.

HETEROSTRUCTURE (CLASS 257)
See HETEROJUNCTION.

Hi-C (CLASS 438)
high capacitance

HIC (CLASS 438)
hybrid integrated circuit

HIGH ELECTRON (HOLE) MOBILITY TRANSISTOR (HEMT) (CLASS 257)
A heterojunction field effect transistor with impurity ions located on the side of the hetero junction with lower affinity for the charge carriers (holes or electrons) injected at the source that pass to the drain via a channel adjacent the hetero junction.

HIGH ELECTRON MOBILITY TRANSISTOR (HEMT) (CLASS 438)
A heterojunction field effect transistor with impurity ions located on the side of the heterojunction with lower affinity for the charge carriers (holes or electrons) injected at the source that pass to the drain via a channel adjacent the heterojunction.

HIGH-VACUUM TUBE (CLASS 315)
A vacuum tube evacuated to such a degree that its electrical characteristics are essentially unaffected by gaseous ionization.

HIGHER FATTY ACID (CLASS 204)
A monocarboxylic acid containing an unbroken chain of at least seven carbon atoms bonded to a carboxyl group, (e.g., stearic acid, etc.).

HIGHER FATTY ACID (CLASS 510)
Denotes a monocarboxylic acid having an acyclic chain of at least seven uninterrupted carbons attached directly to the carboxyl carbon by covalent bonding.

HIMOS (CLASS 438)
(see COMFET)

HINGE AXIS (CLASS 016)
Any axis about which a hinged member* rotates during operation of the hinge.

HINGE PIN (CLASS 016)
An elongated rodlike element about which a hinged member* swings (e.g., "pintle").

HINGED MEMBER (CLASS 016)
Any device or portion thereof (e.g., closure, seat back, etc.) which is adapted to be swingably connected by a hinge to another device or portion thereof (e.g., frame, box, sill, etc.).

HIPOX (CLASS 438)
high pressure oxidation

HMDS (CLASS 438)
hexamethyldisilizane

HNA (CLASS 438)
hetchant mix of hydrofluoric, nitric, and acetic acids

HOLDER MOUNTED FOR MOVEMENT (CLASS 269)
A device in which a work holder is structurally related with respect to a member on which it is supported so that the work holder may be moved to a limited extent or in a definite path(s) with respect to its supporting member. The entire holder, i.e., the structure which contacts and thus actually supports the work, must be capable of movement while work is held. In the case of a work underlying support (as in subclasses 289-314), such underlying support is considered mounted for movement even though the clamps or fastening means needed to keep work from sliding off are not claimed.

HOLDER SUPPORT, MOUNT, OR BASE (CLASS 269)
A work holder support is the structure for positioning work contacting elements, including the associated adjusting and/or operating means for said work contacting elements, with respect to a reference member (table, floor, wall, rack, bench, etc.). Such support structure may be integral or articulated with a work contacting assembly and is provided with means for maintaining position of said assembly with respect to the reference member. The position maintained may be adjustable with respect to a particular reference member by (a) relative shifting of parts or links constituting the work holder support or by (b) relative shifting of the articulated joint structure between the work contacting assembly and the work holder support. The position may also be varied by (c) temporary fastening means selectively securing the work holder support to different reference members or different portions of the same reference member. A work holder support means such as (a) or (b) above is generally disclosed as positionable either (1) preparatory to engaging work or (2) while the work is being held. Since in many instances the structure for (1) will serve for (2) and vise versa, no attempt has been made to distinguish classificationwise on this basis. Both (1) and (2) are treated, unless specifically noted otherwise, as (2) and provided for under Holder Mounted for Movement*. A work holder support means such as (c) above is not considered as a Holder Mounted for Movement* and if claimed, per se, will be found in Class 248, Supports.

HOLDING CURRENT (CLASS 257)
The minimum current needed to maintain a generative type active solid-state device (e.g., a thyristor) in an "on" or conducting condition.

HOLDING ELECTRODES (CLASS 313)
See the definition of auxiliary starting electrode above.

HOLE (CLASS 257)
An empty energy level in the valence band of a semiconductor crystal which exhibits properties of a real particle and can act as a mobile positive charge carrier.

HOLE (CLASS 438)
An empty energy level in the valence band of a semiconductor crystal which exhibits properties of a real particle and can act as a mobile positive-charge carrier.

HOLE FLOW (CLASS 257)
The current in a semiconductor material due to the movement of holes therein.

HOLLOW WORK (CLASS 072)
Material or article of indeterminate length having exterior and interior surfaces extending in the length dimension; each surface, as viewed in a cross section normal to the length dimension, showing an unbroken periphery; the interior surface of which is intended to be treated by a metal-deforming tool of limited length.

HOLOGRAPHY (CLASS 359)
The optical recording of an object wave formed by the resulting interference pattern of two (or more) mutually coherent, component light beams. Generally, a coherent beam is first split into two component beams, one of which irradiates an object, the second of which irradiates a recording medium. The diffraction or scattering of the first wave by the object forms an object wave which proceeds to and interferes with a second coherent beam (i.e., reference beam) at the medium. The resulting pattern is a two-dimensional (thin) or three-dimensional (thick) hologram of the object wave, depending on the thickness of the recording medium.

HOMOGENEOUS (FISSION) REACTOR (CLASS 376)
A reactor in which the fuel and moderator are intimately mixed or dispersed (e.g., the fuel may be a uranium salt dissolved in heavy water) as a solution or slurry.

HOMOGENEOUS FUEL (CLASS 376)
See Homogeneous Fission Reactor.

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

HOMOJUNCTION (CLASS 257)
An interface between regions of opposite polarity in the same semiconductor material.

HOMOJUNCTION (CLASS 438)
An interface between regions of opposite polarity in the same semiconductor material.

HOMOPOLAR OR UNIFORM-FIELD MOTORS (CLASS 318)
A noncommutating motor having a magnetic field producing means combined with one or more electric conductors mounted to move relative to and in proximity to the field producing means, the field producing means being so constructed or energized that the magnetic field produced thereby is, at any instant of time, of the same polarity or direction throughout its extent with reference to the path of travel of the movable electric conductor or conductors.

HOPPER (CLASS 221)
A container, bin or receptacle for retaining a quantity of articles in a jumbled mass.

HOT CARRIER DIODE (CLASS 257)
A diode in which electrons (or holes) have energies greater than those that are in thermal equilibrium with the material of at least one of the regions forming the diode. Schottky barrier diodes typically have "hot carriers" (hot electrons) injected into the metal from the semiconductor.

HOT CARRIER DIODE (CLASS 438)
A diode in which electrons (or holes) have energies greater than those that are in thermal equilibrium with the material of at least one of the regions forming the diode. Schottky barrier diodes typically have "hot carriers" (hot electrons) injected into the metal from the semiconductor.

HOT ELECTRONS (CLASS 257)
See HOT CARRIER DIODE.

HOT-TOP (CLASS 164)
An insulated portion of a mold that retains metal molten in that area so that it can feed into the mold and alleviate shrinkage voids.

HPSC (CLASS 438)
half-Vccsheath plate capacitor

HTO (CLASS 438)
high temperature oxide

HTSC (CLASS 438)
high temperature superconductor

HULL or HULLING (CLASS 099)
These expressions are treated as being species of skin* disjoining*; however, an exception is recognized, as follows: Grain-hulling equates a covering of dirt or similar impurities, with the naturally occurring outer covering of grain*.

HUSK (CLASS 460)
The material consisting of the dry outer covering of the ear of corn.

HYBRID CIRCUIT (CLASS 257)
A small printed circuit having miniature components, which may include passive components (resistors, capacitors, and inductors, deposited on a printed circuit board. A "hybrid circuit" is NOT an integrated circuit, and is not classifiable in this class.

HYBRID CIRCUIT (CLASS 438)
A small printed circuit having miniature components which may include passive components (resistors, capacitors, and inductors) deposited on a printed circuit board.

HYBRID TYPE NETWORK (CLASS 333)
A network for coupling one wave transmission line to two or more wave transmission lines in such manner that there is a conjugate relation between at least two of these coupled transmission lines to prevent any interchange of energy between the conjugately related lines.

HYDROCARBON (CLASS 044)
Used in this class, it means an organic compound which consists exclusively of carbon and hydrogen.

HYDROMETALLURGY (CLASS 075)
A somewhat inexact term for processes involving solution in water or other liquid 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., extracting, leaching, beneficiating, etc.).

HYDROPHILIC (CLASS 210)
Water attractive or wettable.

HYDROPHOBIC (CLASS 210)
Water-repellent or nonwettable.

HYPERFILTRATION (CLASS 210)
Filtration to the ultimate degree to molecular or ionic size, but most likely membrane transport or diffusion phenomenon. See FILTER and subclass 652.

| 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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