Browse Classifications Alphabetically

Here is the list of classes by letter of the alphabet: (under construction)

A Abrading, Abrasive tool making process, material, or composition, Acoustics, Active solid-state devices (e.g., transistors, solid-state diodes), Adhesive bonding and miscellaneous chemical manufacture, Advancing material of indeterminate length, Aeronautics and astronautics, Agitating, Alloys or metallic compositions, Ammunition and explosive-charge making, Ammunition and explosives, Amplifiers, Amusement devices, Amusement devices: games, Amusement devices: games, Amusement devices: toys, Animal husbandry, Apparel, Apparel apparatus, Article dispensing, Automatic temperature and humidity regu... [View all 21 "A" classes]

B Baths, closets, sinks, and spittoons, Batteries: thermoelectric and photoelectric, Bearings, Beds, Bee culture, Binder device releasably engaging aperture or notch of sheet, Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers, Bookbinding: process and apparatus, Books, strips, and leaves, Books, strips, and leaves for manifolding, Boot and shoe making, Boots, shoes, and leggings, Boring or penetrating the earth, Bottles and jars, Brakes, Bridges, Brush, broom, and mop making, Brushing, scrubbing, and general cleaning, Buckles, buttons, clasps, etc., Buoys, ra... [View all 22 "B" classes]

C Card, picture, or sign exhibiting, Catalyst, solid sorbent, or support therefor: product or process of making, Chain, staple, and horseshoe making, Chairs and seats, Check-actuated control mechanisms, Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing, Chemistry of carbon compounds, Chemistry of hydrocarbon compounds, Chemistry of inorganic compounds, Chemistry: analytical and immunological testing, Chemistry: electrical and wave energy, Chemistry: electrical current producing apparatus, product, and process, Chemistry: fertilizers, Chemistry: fischer-tropsch ... [View all 51 "C" classes]

D Data processing: artificial intelligence, Data processing: database and file management or data structures, Data processing: design and analysis of circuit or semiconductor mask, Data processing: financial, business practice, management, or cost/price determination, Data processing: generic control systems or specific applications, Data processing: measuring, calibrating, or testing, Data processing: presentation processing of document, operator interface processing, and screen saver display processing, Data processing: software development, installation, and management, Data processing: speec... [View all 24 "D" classes]

E Earth boring, well treating, and oil field chemistry, Earth working, Education and demonstration, Electric heating, Electric lamp and discharge devices, Electric lamp and discharge devices: consumable electrodes, Electric lamp and discharge devices: systems, Electric lamp or space discharge component or device manufacturing, Electric power conversion systems, Electric resistance heating devices, Electrical audio signal processing systems and devices, Electrical computers and digital data processing systems: input/output, Electrical computers and digital processing systems: interprogram communi... [View all 51 "E" classes]

F Fabric (woven, knitted, or nonwoven textile or cloth, etc.), Facsimile and static presentation processing, Farriery, Fences, Fire escape, ladder, or scaffold, Fire extinguishers, Firearms, Fishing, trapping, and vermin destroying, Flexible bags, Flexible or portable closure, partition, or panel, Fluent material handling, with receiver or receiver coacting means, Fluid handling, Fluid reaction surfaces (i.e., impellers), Fluid sprinkling, spraying, and diffusing, Fluid-pressure and analogous brake systems, Food or edible material: processes, compositions, and products, Foods and beverages: appa... [View all 22 "F" classes]

G Games using tangible projectile, Gas and liquid contact apparatus, Gas separation, Gas separation: apparatus, Gas separation: processes, Gas: heating and illuminating, Gear cutting, milling, or planing, Geometrical instruments, Glass manufacturing [View all 9 "G" classes]

H Handling: hand and hoist-line implements, Harness for working animal, Harvesters, Hazardous or toxic waste destruction or containment, Heat exchange, Heating, Heating systems, High-voltage switches with arc preventing or extinguishing devices, Horizontally supported planar surfaces, Horology, Horology: time measuring systems or devices, Hybrid electric vehicles (hevs), Hydraulic and earth engineering [View all 13 "H" classes]

I Illumination, Image analysis, Imperforate bowl: centrifugal separators, Implements or apparatus for applying pushing or pulling force, Incremental printing of symbolic information, Induced nuclear reactions: processes, systems, and elements, Inductor devices, Industrial electric heating furnaces, Information security, Interactive video distribution systems, Internal-combustion engines, Interrelated power delivery controls, including engine control [View all 12 "I" classes]

J Jewelry, Joints and connections [View both "J" classes]

K Knots and knot tying [View "K" classes]

L Land vehicles, Land vehicles: animal draft appliances, Land vehicles: bodies and tops, Land vehicles: dumping, Land vehicles: wheels and axles, Leather manufactures, Liquid crystal cells, elements and systems, Liquid heaters and vaporizers, Liquid purification or separation, Locks, Lubrication [View all 11 "L" classes]

M Machine element or mechanism, Manufacturing container or tube from paper; or other manufacturing from a sheet or web, Marine propulsion, Material or article handling, Measuring and testing, Mechanical guns and projectors, Merchandising, Metal deforming, Metal founding, Metal fusion bonding, Metal tools and implements, making, Metal treatment, Metal working, Metallurgical apparatus, Mineral oils: apparatus, Mineral oils: processes and products, Mining or in situ disintegration of hard material, Miscellaneous active electrical nonlinear devices, circuits, and systems, Miscellaneous hardware, Mod... [View all 28 "M" classes]

N Nanotechnology, Needle and pin making, Nuclear technology [View all 3 "N" classes]

O Optical communications, Optical waveguides, Optical: systems and elements, Optics: eye examining, vision testing and correcting, Optics: image projectors, Optics: measuring and testing, Optics: motion pictures, Ordnance, Organic compounds -- part of the class 532-570 series, Organic compounds -- part of the class 532-570 series, Organic compounds -- part of the class 532-570 series, Organic compounds -- part of the class 532-570 series, Organic compounds -- part of the class 532-570 series, Organic compounds -- part of the class 532-570 series, Organic compounds -- part of the class 532-570 se... [View all 27 "O" classes]

P Package and article carriers, Package making, Paper making and fiber liberation, Peptide or protein sequence, Perfume compositions, Photocopying, Photography, Pipe joints or couplings, Pipes and tubular conduits, Planetary gear transmission systems or components, Plant husbandry, Plant protecting and regulating compositions, Planting, Plastic and nonmetallic article shaping or treating: processes, Plastic article or earthenware shaping or treating: apparatus, Powder metallurgy processes, Power plants, Presses, Prime-mover dynamo plants, Printed matter, Printing, Prosthesis (i.e., artificial bo... [View all 25 "P" classes]

R Radiant energy, Radiation imagery chemistry: process, composition, or product thereof, Railway draft appliances, Railway mail delivery, Railway rolling stock, Railway switches and signals, Railway wheels and axles, Railways, Railways: surface track, Receptacles, Record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor, Recorders, Refrigeration, Registers, Resilient tires and wheels, Road structure, process, or apparatus, Robots, Roll or roller, Rotary expansible chamber devices, Rotary kinetic fluid motors or pumps, Rotary shafts, gudge... [View all 21 "R" classes]

S Safes, bank protection, or a related device, Seal for a joint or juncture, Selective cutting (e.g., punching), Semiconductor device manufacturing: process, Severing by tearing or breaking, Sewing, Sheet feeding or delivering, Sheet metal container making, Sheet-material associating, Ships, Signals and indicators, Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor, Solid anti-friction devices, materials therefor, lubricant or separant compositions for moving solid surfaces, and miscellaneous mineral oil compositions, Solid material comminution or disi... [View all 44 "S" classes]

T Telecommunications, Telegraphy, Telephonic communications, Television, Television signal processing for dynamic recording or reproducing, Tent, canopy, umbrella, or cane, Textiles: braiding, netting, and lace making, Textiles: cloth finishing, Textiles: fiber preparation, Textiles: fluid treating apparatus, Textiles: ironing or smoothing, Textiles: knitting, Textiles: manufacturing, Textiles: spinning, twisting, and twining, Textiles: weaving, Thermal measuring and testing, Threaded, headed fastener, or washer making: process and apparatus, Tobacco, Toilet, Tool changing, Tool driving or impac... [View all 30 "T" classes]

U Undertaking, Unearthing plants or buried objects [View both "U" classes]

V Valves and valve actuation, Vehicle fenders, Ventilation [View all 3 "V" classes]

W Wave transmission lines and networks, Weighing scales, Wells, Wheel substitutes for land vehicles, Wheelwright machines, Whips and whip apparatus, Winding, tensioning, or guiding, Wire fabrics and structure, Wireworking, Wood turning, Wooden receptacles, Woodworking, Work holders [View all 13 "W" classes]

X X-ray or gamma ray systems or devices [View "X" classes]