| USPC Patent Classifications | |
|---|---|
| class | description |
| 2 | apparel |
| 4 | baths, closets, sinks, and spittoons |
| 5 | beds |
| 7 | compound tools |
| 8 | bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers |
| 12 | boot and shoe making |
| 14 | bridges |
| 15 | brushing, scrubbing, and general cleaning |
| 16 | miscellaneous hardware (e.g., bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance, etc.) |
| 19 | textiles: fiber preparation |
| 23 | chemistry: physical processes |
| 24 | buckles, buttons, clasps, etc. |
| 26 | textiles: cloth finishing |
| 27 | undertaking |
| 28 | textiles: manufacturing |
| 29 | metal working |
| 30 | cutlery |
| 33 | geometrical instruments |
| 34 | drying and gas or vapor contact with solids |
| 36 | boots, shoes, and leggings |
| 37 | excavating |
| 38 | textiles: ironing or smoothing |
| 40 | card, picture, or sign exhibiting |
| 42 | firearms |
| 43 | fishing, trapping, and vermin destroying |
| 44 | fuel and related compositions |
| 47 | plant husbandry |
| 48 | gas: heating and illuminating |
| 49 | movable or removable closures |
| 51 | abrasive tool making process, material, or composition |
| 52 | static structures (e.g., buildings) |
| 53 | package making |
| 54 | harness for working animal |
| 55 | gas separation |
| 56 | harvesters |
| 57 | textiles: spinning, twisting, and twining |
| 59 | chain, staple, and horseshoe making |
| 60 | power plants |
| 62 | refrigeration |
| 63 | jewelry |
| 65 | glass manufacturing |
| 66 | textiles: knitting |
| 68 | textiles: fluid treating apparatus |
| 69 | leather manufactures |
| 70 | locks |
| 71 | chemistry: fertilizers |
| 72 | metal deforming |
| 73 | measuring and testing |
| 74 | machine element or mechanism |
| 75 | specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures |
| 76 | metal tools and implements, making |
| 79 | button making |
| 81 | tools |
| 82 | turning |
| 83 | cutting |
| 84 | music |
| 86 | ammunition and explosive-charge making |
| 87 | textiles: braiding, netting, and lace making |
| 89 | ordnance |
| 91 | motors: expansible chamber type |
| 92 | expansible chamber devices |
| 95 | gas separation: processes |
| 96 | gas separation: apparatus |
| 99 | foods and beverages: apparatus |
| 100 | presses |
| 101 | printing |
| 102 | ammunition and explosives |
| 104 | railways |
| 105 | railway rolling stock |
| 106 | compositions: coating or plastic |
| 108 | horizontally supported planar surfaces |
| 109 | safes, bank protection, or a related device |
| 110 | furnaces |
| 111 | planting |
| 112 | sewing |
| 114 | ships |
| 116 | signals and indicators |
| 117 | single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor |
| 118 | coating apparatus |
| 119 | animal husbandry |
| 122 | liquid heaters and vaporizers |
| 123 | internal-combustion engines |
| 124 | mechanical guns and projectors |
| 125 | stone working |
| 126 | stoves and furnaces |
| 127 | sugar, starch, and carbohydrates |
| 128 | surgery |
| 131 | tobacco |
| 132 | toilet |
| 134 | cleaning and liquid contact with solids |
| 135 | tent, canopy, umbrella, or cane |
| 136 | batteries: thermoelectric and photoelectric |
| 137 | fluid handling |
| 138 | pipes and tubular conduits |
| 139 | textiles: weaving |
| 140 | wireworking |
| 141 | fluent material handling, with receiver or receiver coacting means |
| 142 | wood turning |
| 144 | woodworking |
| 147 | coopering |
| 148 | metal treatment |
| 149 | explosive and thermic compositions or charges |
| 150 | purses, wallets, and protective covers |
| 152 | resilient tires and wheels |
| 156 | adhesive bonding and miscellaneous chemical manufacture |
| 157 | wheelwright machines |
| 159 | concentrating evaporators |
| 160 | flexible or portable closure, partition, or panel |
| 162 | paper making and fiber liberation |
| 163 | needle and pin making |
| 164 | metal founding |
| 165 | heat exchange |
| 166 | wells |
| 168 | farriery |
| 169 | fire extinguishers |
| 171 | unearthing plants or buried objects |
| 172 | earth working |
| 173 | tool driving or impacting |
| 174 | electricity: conductors and insulators |
| 175 | boring or penetrating the earth |
| 177 | weighing scales |
| 178 | telegraphy |
| 180 | motor vehicles |
| 181 | acoustics |
| 182 | fire escape, ladder, or scaffold |
| 184 | lubrication |
| 185 | motors: spring, weight, or animal powered |
| 186 | merchandising |
| 187 | elevator, industrial lift truck, or stationary lift for vehicle |
| 188 | brakes |
| 190 | trunks and hand-carried luggage |
| 191 | electricity: transmission to vehicles |
| 192 | 192 clutches and power-stop control |
| 193 | conveyors, chutes, skids, guides, and ways |
| 194 | check-actuated control mechanisms |
| 196 | mineral oils: apparatus |
| 198 | conveyors: power-driven |
| 199 | type casting |
| 200 | electricity: circuit makers and breakers |
| 201 | distillation: processes, thermolytic |
| 202 | distillation: apparatus |
| 203 | distillation: processes, separatory |
| 204 | chemistry: electrical and wave energy |
| 205 | electrolysis: processes, compositions used therein, and methods of preparing the compositions |
| 206 | special receptacle or package |
| 208 | mineral oils: processes and products |
| 209 | classifying, separating, and assorting solids |
| 210 | liquid purification or separation |
| 211 | supports: racks |
| 212 | traversing hoists |
| 213 | railway draft appliances |
| 215 | bottles and jars |
| 216 | etching a substrate: processes |
| 217 | wooden receptacles |
| 218 | high-voltage switches with arc preventing or extinguishing devices |
| 219 | electric heating |
| 220 | receptacles |
| 221 | article dispensing |
| 222 | dispensing |
| 223 | apparel apparatus |
| 224 | package and article carriers |
| 225 | severing by tearing or breaking |
| 226 | advancing material of indeterminate length |
| 227 | elongated-member-driving apparatus |
| 228 | metal fusion bonding |
| 229 | envelopes, wrappers, and paperboard boxes |
| 231 | whips and whip apparatus |
| 232 | deposit and collection receptacles |
| 234 | selective cutting (e.g., punching) |
| 235 | registers |
| 236 | automatic temperature and humidity regulation |
| 237 | heating systems |
| 238 | railways: surface track |
| 239 | fluid sprinkling, spraying, and diffusing |
| 241 | solid material comminution or disintegration |
| 242 | winding, tensioning, or guiding |
| 244 | aeronautics and astronautics |
| 245 | wire fabrics and structure |
| 246 | railway switches and signals |
| 248 | supports |
| 249 | static molds |
| 250 | radiant energy |
| 251 | valves and valve actuation |
| 252 | compositions |
| 254 | implements or apparatus for applying pushing or pulling force |
| 256 | fences |
| 257 | active solid-state devices (e.g., transistors, solid-state diodes) |
| 258 | railway mail delivery |
| 260 | chemistry of carbon compounds |
| 261 | gas and liquid contact apparatus |
| 264 | plastic and nonmetallic article shaping or treating: processes |
| 266 | metallurgical apparatus |
| 267 | spring devices |
| 269 | work holders |
| 270 | sheet-material associating |
| 271 | sheet feeding or delivering |
| 273 | amusement devices: games |
| 276 | typesetting |
| 277 | seal for a joint or juncture |
| 278 | land vehicles: animal draft appliances |
| 279 | chucks or sockets |
| 280 | land vehicles |
| 281 | books, strips, and leaves |
| 283 | printed matter |
| 285 | pipe joints or couplings |
| 289 | knots and knot tying |
| 290 | prime-mover dynamo plants |
| 291 | track sanders |
| 292 | closure fasteners |
| 293 | vehicle fenders |
| 294 | handling: hand and hoist-line implements |
| 295 | railway wheels and axles |
| 296 | land vehicles: bodies and tops |
| 297 | chairs and seats |
| 298 | land vehicles: dumping |
| 299 | mining or in situ disintegration of hard material |
| 300 | brush, broom, and mop making |
| 301 | land vehicles: wheels and axles |
| 303 | fluid-pressure and analogous brake systems |
| 305 | wheel substitutes for land vehicles |
| 307 | electrical transmission or interconnection systems |
| 310 | electrical generator or motor structure |
| 312 | supports: cabinet structure |
| 313 | electric lamp and discharge devices |
| 314 | electric lamp and discharge devices: consumable electrodes |
| 315 | electric lamp and discharge devices: systems |
| 318 | electricity: motive power systems |
| 320 | electricity: battery or capacitor charging or discharging |
| 322 | electricity: single generator systems |
| 323 | electricity: power supply or regulation systems |
| 324 | electricity: measuring and testing |
| 326 | electronic digital logic circuitry |
| 327 | miscellaneous active electrical nonlinear devices, circuits, and systems |
| 329 | demodulators |
| 330 | amplifiers |
| 331 | oscillators |
| 332 | modulators |
| 333 | wave transmission lines and networks |
| 334 | tuners |
| 335 | electricity: magnetically operated switches, magnets, and electromagnets |
| 336 | inductor devices |
| 337 | electricity: electrothermally or thermally actuated switches |
| 338 | electrical resistors |
| 340 | communications: electrical |
| 341 | coded data generation or conversion |
| 342 | communications: directive radio wave systems and devices (e.g., radar, radio navigation) |
| 343 | communications: radio wave antennas |
| 345 | computer graphics processing and selective visual display systems |
| 346 | recorders |
| 347 | incremental printing of symbolic information |
| 348 | television |
| 349 | liquid crystal cells, elements and systems |
| 351 | optics: eye examining, vision testing and correcting |
| 352 | optics: motion pictures |
| 353 | optics: image projectors |
| 355 | photocopying |
| 356 | optics: measuring and testing |
| 358 | facsimile and static presentation processing |
| 359 | optical: systems and elements |
| 360 | dynamic magnetic information storage or retrieval |
| 361 | electricity: electrical systems and devices |
| 362 | illumination |
| 363 | electric power conversion systems |
| 365 | static information storage and retrieval |
| 366 | agitating |
| 367 | communications, electrical: acoustic wave systems and devices |
| 368 | horology: time measuring systems or devices |
| 369 | dynamic information storage or retrieval |
| 370 | multiplex communications |
| 372 | coherent light generators |
| 373 | industrial electric heating furnaces |
| 374 | thermal measuring and testing |
| 375 | pulse or digital communications |
| 376 | induced nuclear reactions: processes, systems, and elements |
| 377 | electrical pulse counters, pulse dividers, or shift registers: circuits and systems |
| 378 | x-ray or gamma ray systems or devices |
| 379 | telephonic communications |
| 380 | cryptography |
| 381 | electrical audio signal processing systems and devices |
| 382 | image analysis |
| 383 | flexible bags |
| 384 | bearings |
| 385 | optical waveguides |
| 386 | motion video signal processing for recording or reproducing |
| 388 | electricity: motor control systems |
| 392 | electric resistance heating devices |
| 396 | photography |
| 398 | optical communications |
| 399 | electrophotography |
| 400 | typewriting machines |
| 401 | coating implements with material supply |
| 402 | binder device releasably engaging aperture or notch of sheet |
| 403 | joints and connections |
| 404 | road structure, process, or apparatus |
| 405 | hydraulic and earth engineering |
| 406 | conveyors: fluid current |
| 407 | cutters, for shaping |
| 408 | cutting by use of rotating axially moving tool |
| 409 | gear cutting, milling, or planing |
| 410 | freight accommodation on freight carrier |
| 411 | expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener |
| 412 | bookbinding: process and apparatus |
| 413 | sheet metal container making |
| 414 | material or article handling |
| 415 | rotary kinetic fluid motors or pumps |
| 416 | fluid reaction surfaces (i.e., impellers) |
| 417 | pumps |
| 418 | rotary expansible chamber devices |
| 419 | powder metallurgy processes |
| 420 | alloys or metallic compositions |
| 422 | chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing |
| 423 | chemistry of inorganic compounds |
| 424 | drug, bio-affecting and body treating compositions |
| 425 | plastic article or earthenware shaping or treating: apparatus |
| 426 | food or edible material: processes, compositions, and products |
| 427 | coating processes |
| 428 | stock material or miscellaneous articles |
| 429 | chemistry: electrical current producing apparatus, product, and process |
| 430 | radiation imagery chemistry: process, composition, or product thereof |
| 431 | combustion |
| 432 | heating |
| 433 | dentistry |
| 434 | education and demonstration |
| 435 | chemistry: molecular biology and microbiology |
| 436 | chemistry: analytical and immunological testing |
| 438 | semiconductor device manufacturing: process |
| 439 | electrical connectors |
| 440 | marine propulsion |
| 441 | buoys, rafts, and aquatic devices |
| 442 | fabric (woven, knitted, or nonwoven textile or cloth, etc.) |
| 445 | electric lamp or space discharge component or device manufacturing |
| 446 | amusement devices: toys |
| 449 | bee culture |
| 450 | foundation garments |
| 451 | abrading |
| 452 | butchering |
| 453 | coin handling |
| 454 | ventilation |
| 455 | telecommunications |
| 460 | crop threshing or separating |
| 462 | books, strips, and leaves for manifolding |
| 463 | amusement devices: games |
| 464 | rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts |
| 470 | threaded, headed fastener, or washer making: process and apparatus |
| 472 | amusement devices |
| 473 | games using tangible projectile |
| 474 | endless belt power transmission systems or components |
| 475 | planetary gear transmission systems or components |
| 476 | friction gear transmission systems or components |
| 477 | interrelated power delivery controls, including engine control |
| 482 | exercise devices |
| 483 | tool changing |
| 492 | roll or roller |
| 493 | manufacturing container or tube from paper; or other manufacturing from a sheet or web |
| 494 | imperforate bowl: centrifugal separators |
| 501 | compositions: ceramic |
| 502 | catalyst, solid sorbent, or support therefor: product or process of making |
| 503 | record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor |
| 504 | plant protecting and regulating compositions |
| 505 | superconductor technology: apparatus, material, process |
| 506 | combinatorial chemistry technology: method, library, apparatus |
| 507 | earth boring, well treating, and oil field chemistry |
| 508 | solid anti-friction devices, materials therefor, lubricant or separant compositions for moving solid surfaces, and miscellaneous mineral oil compositions |
| 510 | cleaning compositions for solid surfaces, auxiliary compositions therefor, or processes of preparing the compositions |
| 512 | perfume compositions |
| 514 | drug, bio-affecting and body treating compositions |
| 516 | colloid systems and wetting agents; subcombinations thereof; processes of |
| 518 | chemistry: fischer-tropsch processes; or purification or recovery of products thereof |
| 520 | synthetic resins or natural rubbers -- part of the class 520 series |
| 521 | synthetic resins or natural rubbers -- part of the class 520 series |
| 522 | synthetic resins or natural rubbers -- part of the class 520 series |
| 523 | synthetic resins or natural rubbers -- part of the class 520 series |
| 524 | synthetic resins or natural rubbers -- part of the class 520 series |
| 525 | synthetic resins or natural rubbers -- part of the class 520 series |
| 526 | synthetic resins or natural rubbers -- part of the class 520 series |
| 527 | synthetic resins or natural rubbers -- part of the class 520 series |
| 528 | synthetic resins or natural rubbers -- part of the class 520 series |
| 530 | chemistry: natural resins or derivatives; peptides or proteins; lignins or reaction products thereof |
| 532 | organic compounds -- part of the class 532-570 series |
| 534 | organic compounds -- part of the class 532-570 series |
| 536 | organic compounds -- part of the class 532-570 series |
| 540 | organic compounds -- part of the class 532-570 series |
| 544 | organic compounds -- part of the class 532-570 series |
| 546 | organic compounds -- part of the class 532-570 series |
| 548 | organic compounds -- part of the class 532-570 series |
| 549 | organic compounds -- part of the class 532-570 series |
| 552 | organic compounds -- part of the class 532-570 series |
| 554 | organic compounds -- part of the class 532-570 series |
| 556 | organic compounds -- part of the class 532-570 series |
| 558 | organic compounds -- part of the class 532-570 series |
| 560 | organic compounds -- part of the class 532-570 series |
| 562 | organic compounds -- part of the class 532-570 series |
| 564 | organic compounds -- part of the class 532-570 series |
| 568 | organic compounds -- part of the class 532-570 series |
| 570 | organic compounds -- part of the class 532-570 series |
| 585 | chemistry of hydrocarbon compounds |
| 588 | hazardous or toxic waste destruction or containment |
| 600 | surgery |
| 601 | surgery: kinesitherapy |
| 602 | surgery: splint, brace, or bandage |
| 604 | surgery |
| 606 | surgery |
| 607 | surgery: light, thermal, and electrical application |
| 623 | prosthesis (i.e., artificial body members), parts thereof, or aids and accessories therefor |
| 700 | data processing: generic control systems or specific applications |
| 701 | data processing: vehicles, navigation, and relative location |
| 702 | data processing: measuring, calibrating, or testing |
| 703 | data processing: structural design, modeling, simulation, and emulation |
| 704 | data processing: speech signal processing, linguistics, language translation, and audio compression/decompression |
| 705 | data processing: financial, business practice, management, or cost/price determination |
| 706 | data processing: artificial intelligence |
| 707 | data processing: database and file management or data structures |
| 708 | electrical computers: arithmetic processing and calculating |
| 709 | electrical computers and digital processing systems: multicomputer data transferring |
| 710 | electrical computers and digital data processing systems: input/output |
| 711 | electrical computers and digital processing systems: memory |
| 712 | electrical computers and digital processing systems: processing architectures and instruction processing (e.g., processors) |
| 713 | electrical computers and digital processing systems: support |
| 714 | error detection/correction and fault detection/recovery |
| 715 | data processing: presentation processing of document, operator interface processing, and screen saver display processing |
| 716 | computer-aided design and analysis of circuits and semiconductor masks |
| 717 | data processing: software development, installation, and management |
| 718 | electrical computers and digital processing systems: virtual machine task or process management or task management/control |
| 719 | electrical computers and digital processing systems: interprogram communication or interprocess communication (ipc) |
| 720 | dynamic optical information storage or retrieval |
| 725 | interactive video distribution systems |
| 726 | information security |
| 800 | multicellular living organisms and unmodified parts thereof and related processes |
| 850 | scanning-probe techniques or apparatus; applications of scanning-probe techniques, e.g., scanning probe microscopy [spm] |
| 901 | robots |
| 902 | electronic funds transfer |
| 903 | hybrid electric vehicles (hevs) |
| 930 | peptide or protein sequence |
| 968 | horology |
| 976 | nuclear technology |
| 977 | nanotechnology |
| 984 | musical instruments |
| 987 | organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system |
| D1 | edible products |
| D2 | apparel and haberdashery |
| D3 | travel goods and personal belongings |
| D4 | brushware |
| D5 | textile or paper yard goods; sheet material |
| D6 | furnishings |
| D7 | equipment for preparing or serving food or drink not elsewhere specified |
| D8 | tools and hardware |
| D9 | packages and containers for goods |
| D10 | measuring, testing, or signalling instruments |
| D11 | jewelry, symbolic insignia, and ornaments |
| D12 | transportation |
| D13 | equipment for production, distribution, or transformation of energy |
| D14 | recording, communication, or information retrieval equipment |
| D15 | machines not elsewhere specified |
| D16 | photography and optical equipment |
| D17 | musical instruments |
| D18 | printing and office machinery |
| D19 | office supplies; artists and teachers materials |
| D20 | sales and advertising equipment |
| D21 | games, toys, and sports goods |
| D22 | arms, pyrotechnics, hunting and fishing equipment |
| D23 | environmental heating and cooling; fluid handling and sanitary equipment |
| D24 | medical and laboratory equipment |
| D25 | building units and construction elements |
| D26 | lighting |
| D27 | tobacco and smokers' supplies |
| D28 | cosmetic products and toilet articles |
| D29 | equipment for safety, protection, and rescue |
| D30 | animal husbandry |
| D32 | washing, cleaning, or drying machine |
| D34 | material or article handling equipment |
| D99 | miscellaneous |
| G9B | information storage based on relative movement between record carrier and transducer |
| PLT | plants |
Other classification systems