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USPTO Terms of Art — V

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 |

VACCINE (CLASS 977)
Suspension of attenuated or killed microorganisms or viruses that are incapable of inducing severe infection but are capable of producing immune memory when inoculated into a complex organism.

VACUUM TUBE (CLASS 330)
An enclosed space evacuated of most of its gas wherein an electric discharge takes place between two electrodes one of which emits electrically charged atomic particles, generally electrons and the other electrode collects such particles. The vacuum tube has at least one additional electrode or other means to control the flow of charged atomic particles between the emitter electrode and the collector electrode. The electric discharge of a vacuum tube is normally an electron discharge and any discharge of ionized particles is normally fortuitous and unintended. A vacuum tube is usually involved in a four terminal network, the input signal being supplied to two input electrodes usually the grid (control) and cathode (electron emitting electrode) and the output circuit normally being comprised of the power supply, the anode load impedance, the anode, the electron discharge, the cathode impedance, the load and the output coupling means. Thus the cathode which is normally present in the output and input circuits is normally the common electrode. Other alternative configurations where the input and output electrodes are not as above, as for example, where the anode is a common electrode and the cathode is the output electrode, are known and provided for in the schedule of this class. The terms for the grid, cathode and anode electrodes or auxiliary electrodes (as defined below) are referred to according to the predetermined use usually assigned for them regardless of the alternative circuit arrangements involved. The terms input, output, and common electrodes are used as in these definitions.

VALVES AND VALVE ACTUATION (CLASS 137)
The term "valve unit," as used above, is applied to either a single or multiway valve. In the multiway type plural passages are controlled by valve means having plural flow closing areas or points, but the entire means is housed in a single casing or organized as a body or unit. Valve units as such are classified in subclasses 625+. The class also provides for some valve units under the special titles. Radiator vent check valves, Reversing cokes and valves, Flush or water closet valves, Drain valves, Float valves, Temperature operated cut-off valves, Safety valves, and certain analogous types. The class also takes valves combined with other structure, as the tire inflation type combined with or adapted for connection with inflation means and/or the inflatable article. Class 251, Valves and Valve Actuation provides for valves combined with certain actuators, particularly the fluid and electric motors and the more complex mechanical movement actuators. The term "Valves" includes variable restrictors, which frequently cannot be distinguished as claimed, and have been set apart only in certain subclasses having the term restrictor or choke in the title, as subclasses 436+, and 475+, primarily because of their special function as silencers. Closures are also frequently indistinguishable from valves, particularly as used and claimed in fluid handling systems. In some instances they have been classified with valves, as in subclasses 613+, Single flow path with plural serial valves and/or closures and Class 251, Valves and Valve Actuation, provides for restrictors or flow guides in subclasses 118.01+.

VANE (CLASS 415)
A static partition member (which however may be selectively adjustable to various positions) in the working fluid flow path and shaped (often as an airfoil) to guide or direct fluid flow. This vane member may also variously be called a nozzle, intermediate, diffuser or diaphragm in the art literature.

VANE (CLASS 418)
A partition member which generally moves with the working member but also has movement relative to the working member incident to the expansion and contraction of the chamber. The vane may be on the cylinder if the cylinder is the working member.

VAPOR (CLASS 095)
The gaseous state of matter that is liquid or solid under a temperature of 0°C and 760 mm Hg pressure.

VAPOR (CLASS 096)
The gaseous state of matter that is liquid or solid under a temperature of 0°C and pressure of 760 mm Hg.

VAPOR (CLASS 210)
A normally liquid material in a gaseous state, e.g., steam. Separating or purifying a fluid in the gaseous state is proper for Class 55, Gas Separation, but treating a liquid with gaseous constituents is provided for in subclasses 603+, 640, 664, 707, 718, and 750.

VAPORIZATION (CLASS 202)
The process of changing a liquid into a vapor. See "Evaporation".

VAPORIZATION (CLASS 203)
The process of changing a liquid into a vapor. See "Evaporation".

VARACTOR (CLASS 257)
A semiconductor diode that changes capacitance with a change in applied voltage, comprising a two terminal active device using the voltage variable capacitance of a pn junction or a Schottky junction.

VARACTOR (CLASS 438)
A semiconductor diode comprising a two terminal active device using the voltage variable capacitance of a pn junction or a Schottky junction that changes capacitance with a change in applied voltage.

VARIABLE INDUCTOR (CLASS 334)
A passive inductor wherein the inductor device includes a movable element which may be adjusted to different positions or adjusted to vary its physical dimensions to change the effective inductance from one value to another. Examples of such movable elements are: a tap changing switch, a distortable coil or core, or movable coupled coils. Inductor devices designed to change inductance (1) as a function of the current and/or voltage flowing through the inductor winding, or (2) in accordance with a magnetic field or bias applied to the core or coil of the device, or (3) as a function of the ambient temperature or some external condition applied to the device, and wherein no physical element of the inductor is moved to effect such change in inductance, are not considered adjustable under the above definition. For such variable inductors, see Subclass References to the Current Class, above for for magnetic field responsive tuners, for condition responsive tuners, and for saturable core type tuners.

VARISTOR (CLASS 257)
A term applied to both passive and active solid-state devices. A varistor is a two-electrode semiconductor device with a voltage dependent nonlinear resistance which falls significantly as the voltage is increased. In an active device, the non-linear property is due to the presence of one or more potential barriers, whereas, in a passive type varistor, it is due to electrical heating of the material due to current flow therethrough. Varistors are to be contrasted with passive variable resistors such as rheostats or potentiometers.

VARISTOR (CLASS 438)
A varistor is a two-electrode active or passive semiconductor device with a voltage dependent nonlinear resistance which falls significantly as the voltage is increased. In an active device, the nonlinear property is due to the presence of one or more potential barriers. In a passive-type varistor, it is due to electrical heating of the material due to current flow therethrough. Varistors are to be contrasted with passive variable resistors such as rheostats or potentiometers.

VAT DYE (CLASS 008)
Vat dyes are dyes which are applied to the substrate in reduced, soluble form and then oxidize to the original insoluble pigment. Common vat dyes are quinonic dyes and particularly common are anthraquinones and indigoids.

VCNR (CLASS 438)
voltage controlled negative resistance

VEHICLE (CLASS 425)
A fluid, generally a liquid, employed to carry stock material to a molding surface.

VEHICLE (CLASS 701)
Any means in or by which someone or something is carried or conveyed. This term includes, but is not limited to, automobiles, aircraft, spacecraft, blimps, trains, motorcycles, bicycles, watercraft, and submarines.

VENT (CLASS 164)
Small opening in a mold to allow trapped air to escape.

VERNEUIL (CLASS 117)
A. Verneuil, French inventor of the crystal growth technique (1902) used for materials with a high melting point. The Verneuil method is typified by use of a high temperature heat source, such as a gas flame or plasma torch, into which powdered material is directed, whereupon it melts as or prior to its arrival to a thin film of melt on a seed crystal which is pulled away at an appropriate rate.

VERTICAL BLANKING INTERVAL (VBI) (CLASS 725)
The time required for the electron beam in a raster-scan display to perform a vertical retrace.

VERTICAL JUNCTION (CLASS 257)
A junction of finite width which has a vertical axis. The materials which form it lie on either horizontal side thereof.

VERTICAL RETORT (CLASS 075)
A vertical, generally cylindrical, vessel closed at the bottom and heated externally so that the contents are heated only by heat conduced through the retort walls. Often a product is volatilized from the retort and collected in another container.

VFG (CLASS 117)
Vertical Freeze Gradient. Also VGF.

VGF (CLASS 438)
vertical gradient freeze (also VFG)

VHSIC (CLASS 438)
very high speed integrated circuit

VIA (CLASS 257)
A metallized or plated-through hole, in an insulating layer, e.g., a substrate, chip or a printed circuit board which forms a conduction path itself and is not designed to have a wire or lead inserted therethrough.

VIA (CLASS 438)
A metallized or plated-through hole in an insulating layer, a semiconductor containing substrate or chip, or a printed circuit board which forms a conduction path itself without having a wire or lead inserted therethrough.

VIBRATOR (CLASS 363)
A circuit interrupter that has a movable conducting member which moves between contacts for converting D.C. to A.C. or A.C. to D.C.

VIBRATOR (CLASS 400)
Vibrator is the typewriter industry term for an element or an assemblage of elements that (a) guides a ribbon* or constrains the ribbon for movement along its elongated dimension, and (b) is located on the typewriter adjacent to the print-point*, and (c) moves at least a portion of the ribbon that is so guided transversely to its elongated dimension from a first position adjacent to but not covering the print-point to a second position covering the print-point. The first position is a normal, or "rest" position that permits the print-line* to be seen by a typist, and the second position places the ribbon over the print-point so that a type-face* will be impressed against the ribbon to imprint a character* on a record-medium*. The vibrator movement may be controlled so as to move different zones of the ribbon to the print-point, each of which zones extends longitudinally and is spaced transversely to the others, whereby different colored characters may be imprinted.

VIDEO SIGNAL (CLASS 348)
A signal in television derived from optical image (e.g., active video).

VIDEO SIGNAL (CLASS 725)
The signal sent from a source to a display. The signal can include horizontal and vertical synchronization signals, as well as image information.

VIDEO-ON-DEMAND (VOD) (CLASS 725)
A programming event that is provided upon request, in which the event is delivered "on-demand" (with negligible delay). These events are delivered to individual subscribers through an interactive process.

VIDEOCASSETTE RECORDER (VCR) (CLASS 725)
A videotape recorder that uses videocassettes.

VIRTUAL LIBRARY (CLASS 506)
A library which has no physical existence. This terminology encompasses two different types of libraries: in silico libraries and dynamic libraries.

VIRUS (CLASS 977)
Submicroscopic organism, which may be pathogenic, composed essentially of a core of nucleic acid enclosed by a protein coat, able to replicate only within a living cell.

VISION CORRECTING (CLASS 351)
Remedying vision defects by means of sight correcting lenses, eye muscle training devices, etc.

VISUAL ELEMENT (CLASS 345)
The smallest constituent part of a composite visual image*. A visual element* may be the visual effect produced by a display element*.

VISUAL IMAGE (CLASS 345)
The resultant image shown by the display device*.

VITREOUS, VITRIFY (CLASS 501)
Vitrification is the progressive fusion of the particles in a ceramic body. As vitrification progresses, the proportion of glassy bond increases and the apparent porosity of the substance decreases. Glass in a massive form (rather than in a frit or powder) and porcelain are considered to be fully vitrified.

VLE (CLASS 438)
vapor levitation epitaxy

VLSI (CLASS 438)
very large scale integration

VMOS (CLASS 438)
vertical MOS

VOICED (CLASS 704)
Speech sounds produced by vibratory action of the vocal cords and usually having pitch.

VOLATILIZING (CLASS 588)
Converting a normally solid or liquid material into a gas or vapor state; mere evaporation of water or other solvents is included under this definition.

VOLATIZING (CLASS 423)
Converting a normally solid or liquid material into a gas or vapor state; mere volatization of water or a solvent is excluded under this definition.

VOLTAIC CELL (CLASS 320)
An elementary unit source of electrical energy stored as chemical energy, comprising two separated dissimilar electrodes bridged by an electrolyte, wherein said unit source produces a potential difference across said electrodes in a chemical reaction involving said electrodes and electrolyte that converts chemical energy into electrical energy. [Synonymous with cell, but distinguished from a fuel cell, in which the electrodes are not required to be chemically involved in the primary reaction.]

VPE (CLASS 117)
Vapor Phase Epitaxy*.

VPE (CLASS 438)
vapor phase epitaxy

VSIS (CLASS 438)
V-channel substrate inner stripe

| 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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