List of U.S. Classifications for Patents

(United States Patent Classification (USPC) System)



Class Number and Title


Class Number and Title


2

Apparel

330

Amplifiers


4

Baths, closets, sinks, and spittoons

331

Oscillators


5

Beds

332

Modulators


7

Compound tools

333

Wave transmission lines and networks


8

Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers

334

Tuners


12

Boot and shoe making

335

Electricity: magnetically operated switches, magnets, and electromagnets


14

Bridges

336

Inductor devices


15

Brushing, scrubbing, and general cleaning

337

Electricity: electrothermally or thermally actuated switches


16

Miscellaneous hardware (e.g., bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance, etc.)

338

Electrical resistors


19

Textiles: fiber preparation

340

Communications: electrical


23

Chemistry: physical processes

341

Coded data generation or conversion


24

Buckles, buttons, clasps, etc.

342

Communications: directive radio wave systems and devices (e.g., radar, radio navigation)


26

Textiles: cloth finishing

343

Communications: radio wave antennas


27

Undertaking

345

Computer graphics processing and selective visual display systems


28

Textiles: manufacturing

346

Recorders


29

Metal working

347

Incremental printing of symbolic information


30

Cutlery

348

Television


33

Geometrical instruments

349

Liquid crystal cells, elements and systems


34

Drying and gas or vapor contact with solids

351

Optics: eye examining, vision testing and correcting


36

Boots, shoes, and leggings

352

Optics: motion pictures


37

Excavating

353

Optics: image projectors


38

Textiles: ironing or smoothing

355

Photocopying


40

Card, picture, or sign exhibiting

356

Optics: measuring and testing


42

Firearms

358

Facsimile and static presentation processing


43

Fishing, trapping, and vermin destroying

359

Optical: systems and elements


44

Fuel and related compositions

360

Dynamic magnetic information storage or retrieval


47

Plant husbandry

361

Electricity: electrical systems and devices


48

Gas: heating and illuminating

362

Illumination


49

Movable or removable closures

363

Electric power conversion systems


51

Abrasive tool making process, material, or composition

365

Static information storage and retrieval


52

Static structures (e.g., buildings)

366

Agitating


53

Package making

367

Communications, electrical: acoustic wave systems and devices


54

Harness for working animal

368

Horology: time measuring systems or devices


55

Gas separation

369

Dynamic information storage or retrieval


56

Harvesters

370

Multiplex communications


57

Textiles: spinning, twisting, and twining

372

Coherent light generators


59

Chain, staple, and horseshoe making

373

Industrial electric heating furnaces


60

Power plants

374

Thermal measuring and testing


62

Refrigeration

375

Pulse or digital communications


63

Jewelry

376

Induced nuclear reactions: processes, systems, and elements


65

Glass manufacturing

377

Electrical pulse counters, pulse dividers, or shift registers: circuits and systems


66

Textiles: knitting

378

X-ray or gamma ray systems or devices


68

Textiles: fluid treating apparatus

379

Telephonic communications


69

Leather manufactures

380

Cryptography


70

Locks

381

Electrical audio signal processing systems and devices


71

Chemistry: fertilizers

382

Image analysis


72

Metal deforming

383

Flexible bags


73

Measuring and testing

384

Bearings


74

Machine element or mechanism

385

Optical waveguides


75

Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures

386

Television signal processing for dynamic recording or reproducing


76

Metal tools and implements, making

388

Electricity: motor control systems


79

Button making

392

Electric resistance heating devices


81

Tools

396

Photography


82

Turning

398

Optical communications


83

Cutting

399

Electrophotography


84

Music

400

Typewriting machines


86

Ammunition and explosive-charge making

401

Coating implements with material supply


87

Textiles: braiding, netting, and lace making

402

Binder device releasably engaging aperture or notch of sheet


89

Ordnance

403

Joints and connections


91

Motors: expansible chamber type

404

Road structure, process, or apparatus


92

Expansible chamber devices

405

Hydraulic and earth engineering


95

Gas separation: processes

406

Conveyors: fluid current


96

Gas separation: apparatus

407

Cutters, for shaping


99

Foods and beverages: apparatus

408

Cutting by use of rotating axially moving tool


100

Presses

409

Gear cutting, milling, or planing


101

Printing

410

Freight accommodation on freight carrier


102

Ammunition and explosives

411

Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener


104

Railways

412

Bookbinding: process and apparatus


105

Railway rolling stock

413

Sheet metal container making


106

Compositions: coating or plastic

414

Material or article handling


108

Horizontally supported planar surfaces

415

Rotary kinetic fluid motors or pumps


109

Safes, bank protection, or a related device

416

Fluid reaction surfaces (i.e., impellers)


110

Furnaces

417

Pumps


111

Planting

418

Rotary expansible chamber devices


112

Sewing

419

Powder metallurgy processes


114

Ships

420

Alloys or metallic compositions


116

Signals and indicators

422

Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing


117

Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor

423

Chemistry of inorganic compounds


118

Coating apparatus

424

Drug, bio-affecting and body treating compositions


119

Animal husbandry

425

Plastic article or earthenware shaping or treating: apparatus


122

Liquid heaters and vaporizers

426

Food or edible material: processes, compositions, and products


123

Internal-combustion engines

427

Coating processes


124

Mechanical guns and projectors

428

Stock material or miscellaneous articles


125

Stone working

429

Chemistry: electrical current producing apparatus, product, and process


126

Stoves and furnaces

430

Radiation imagery chemistry: process, composition, or product thereof


127

Sugar, starch, and carbohydrates

431

Combustion


128

Surgery

432

Heating


131

Tobacco

433

Dentistry


132

Toilet

434

Education and demonstration


134

Cleaning and liquid contact with solids

435

Chemistry: molecular biology and microbiology


135

Tent, canopy, umbrella, or cane

436

Chemistry: analytical and immunological testing


136

Batteries: thermoelectric and photoelectric

438

Semiconductor device manufacturing: process


137

Fluid handling

439

Electrical connectors


138

Pipes and tubular conduits

440

Marine propulsion


139

Textiles: weaving

441

Buoys, rafts, and aquatic devices


140

Wireworking

442

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)


141

Fluent material handling, with receiver or receiver coacting means

445

Electric lamp or space discharge component or device manufacturing


142

Wood turning

446

Amusement devices: toys


144

Woodworking

449

Bee culture


147

Coopering

450

Foundation garments


148

Metal treatment

451

Abrading


149

Explosive and thermic compositions or charges

452

Butchering


150

Purses, wallets, and protective covers

453

Coin handling


152

Resilient tires and wheels

454

Ventilation


156

Adhesive bonding and miscellaneous chemical manufacture

455

Telecommunications


157

Wheelwright machines

460

Crop threshing or separating


159

Concentrating evaporators

462

Books, strips, and leaves for manifolding


160

Flexible or portable closure, partition, or panel

463

Amusement devices: games


162

Paper making and fiber liberation

464

Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts


163

Needle and pin making

470

Threaded, headed fastener, or washer making: process and apparatus


164

Metal founding

472

Amusement devices


165

Heat exchange

473

Games using tangible projectile


166

Wells

474

Endless belt power transmission systems or components


168

Farriery

475

Planetary gear transmission systems or components


169

Fire extinguishers

476

Friction gear transmission systems or components


171

Unearthing plants or buried objects

477

Interrelated power delivery controls, including engine control


172

Earth working

482

Exercise devices


173

Tool driving or impacting

483

Tool changing


174

Electricity: conductors and insulators

492

Roll or roller


175

Boring or penetrating the earth

493

Manufacturing container or tube from paper; or other manufacturing from a sheet or web


177

Weighing scales

494

Imperforate bowl: centrifugal separators


178

Telegraphy

501

Compositions: ceramic


180

Motor vehicles

502

Catalyst, solid sorbent, or support therefor: product or process of making


181

Acoustics

503

Record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor


182

Fire escape, ladder, or scaffold

504

Plant protecting and regulating compositions


184

Lubrication

505

Superconductor technology: apparatus, material, process


185

Motors: spring, weight, or animal powered

506

Combinatorial chemistry technology: method, library, apparatus


186

Merchandising

507

Earth boring, well treating, and oil field chemistry


187

Elevator, industrial lift truck, or stationary lift for vehicle

508

Solid anti-friction devices, materials therefor, lubricant or separant compositions for moving solid surfaces, and miscellaneous mineral oil compositions


188

Brakes

510

Cleaning compositions for solid surfaces, auxiliary compositions therefor, or processes of preparing the compositions


190

Trunks and hand-carried luggage

512

Perfume compositions


191

Electricity: transmission to vehicles

514

Drug, bio-affecting and body treating compositions


192

Clutches and power-stop control

516

Colloid systems and wetting agents; subcombinations thereof; processes of


193

Conveyors, chutes, skids, guides, and ways

518

Chemistry: fischer-tropsch processes; or purification or recovery of products thereof


194

Check-actuated control mechanisms

520

Synthetic resins or natural rubbers -- part of the class 520 series


196

Mineral oils: apparatus

521

Synthetic resins or natural rubbers -- part of the class 520 series


198

Conveyors: power-driven

522

Synthetic resins or natural rubbers -- part of the class 520 series


199

Type casting

523

Synthetic resins or natural rubbers -- part of the class 520 series


200

Electricity: circuit makers and breakers

524

Synthetic resins or natural rubbers -- part of the class 520 series


201

Distillation: processes, thermolytic

525

Synthetic resins or natural rubbers -- part of the class 520 series


202

Distillation: apparatus

526

Synthetic resins or natural rubbers -- part of the class 520 series


203

Distillation: processes, separatory

527

Synthetic resins or natural rubbers -- part of the class 520 series


204

Chemistry: electrical and wave energy

528

Synthetic resins or natural rubbers -- part of the class 520 series


205

Electrolysis: processes, compositions used therein, and methods of preparing the compositions

530

Chemistry: natural resins or derivatives; peptides or proteins; lignins or reaction products thereof


206

Special receptacle or package

532

Organic compounds -- part of the class 532-570 series


208

Mineral oils: processes and products

534

Organic compounds -- part of the class 532-570 series


209

Classifying, separating, and assorting solids

536

Organic compounds -- part of the class 532-570 series


210

Liquid purification or separation

540

Organic compounds -- part of the class 532-570 series


211

Supports: racks

544

Organic compounds -- part of the class 532-570 series


212

Traversing hoists

546

Organic compounds -- part of the class 532-570 series


213

Railway draft appliances

548

Organic compounds -- part of the class 532-570 series


215

Bottles and jars

549

Organic compounds -- part of the class 532-570 series


216

Etching a substrate: processes

552

Organic compounds -- part of the class 532-570 series


217

Wooden receptacles

554

Organic compounds -- part of the class 532-570 series


218

High-voltage switches with arc preventing or extinguishing devices

556

Organic compounds -- part of the class 532-570 series


219

Electric heating

558

Organic compounds -- part of the class 532-570 series


220

Receptacles

560

Organic compounds -- part of the class 532-570 series


221

Article dispensing

562

Organic compounds -- part of the class 532-570 series


222

Dispensing

564

Organic compounds -- part of the class 532-570 series


223

Apparel apparatus

568

Organic compounds -- part of the class 532-570 series


224

Package and article carriers

570

Organic compounds -- part of the class 532-570 series


225

Severing by tearing or breaking

585

Chemistry of hydrocarbon compounds


226

Advancing material of indeterminate length

588

Hazardous or toxic waste destruction or containment


227

Elongated-member-driving apparatus

600

Surgery


228

Metal fusion bonding

601

Surgery: kinesitherapy


229

Envelopes, wrappers, and paperboard boxes

602

Surgery: splint, brace, or bandage


231

Whips and whip apparatus

604

Surgery


232

Deposit and collection receptacles

606

Surgery


234

Selective cutting (e.g., punching)

607

Surgery: light, thermal, and electrical application


235

Registers

623

Prosthesis (i.e., artificial body members), parts thereof, or aids and accessories therefor


236

Automatic temperature and humidity regulation

700

Data processing: generic control systems or specific applications


237

Heating systems

701

Data processing: vehicles, navigation, and relative location


238

Railways: surface track

702

Data processing: measuring, calibrating, or testing


239

Fluid sprinkling, spraying, and diffusing

703

Data processing: structural design, modeling, simulation, and emulation


241

Solid material comminution or disintegration

704

Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression


242

Winding, tensioning, or guiding

705

Data processing: financial, business practice, management, or cost/price determination


244

Aeronautics and astronautics

706

Data processing: artificial intelligence


245

Wire fabrics and structure

707

Data processing: database and file management or data structures


246

Railway switches and signals

708

Electrical computers: arithmetic processing and calculating


248

Supports

709

Electrical computers and digital processing systems: multicomputer data transferring


249

Static molds

710

Electrical computers and digital data processing systems: input/output


250

Radiant energy

711

Electrical computers and digital processing systems: memory


251

Valves and valve actuation

712

Electrical computers and digital processing systems: processing architectures and instruction processing (e.g., processors)


252

Compositions

713

Electrical computers and digital processing systems: support


254

Implements or apparatus for applying pushing or pulling force

714

Error detection/correction and fault detection/recovery


256

Fences

715

Data processing: presentation processing of document, operator interface processing, and screen saver display processing


257

Active solid-state devices (e.g., transistors, solid-state diodes)

716

Data processing: design and analysis of circuit or semiconductor mask


258

Railway mail delivery

717

Data processing: software development, installation, and management


260

Chemistry of carbon compounds

718

Electrical computers and digital processing systems: virtual machine task or process management or task management/control


261

Gas and liquid contact apparatus

719

Electrical computers and digital processing systems: interprogram communication or interprocess communication (ipc)


264

Plastic and nonmetallic article shaping or treating: processes

720

Dynamic optical information storage or retrieval


266

Metallurgical apparatus

725

Interactive video distribution systems


267

Spring devices

726

Information security


269

Work holders

800

Multicellular living organisms and unmodified parts thereof and related processes


270

Sheet-material associating

850

Scanning-probe techniques or apparatus; applications of scanning-probe techniques, e.g., scanning probe microscopy [spm]


271

Sheet feeding or delivering

901

Robots


273

Amusement devices: games

902

Electronic funds transfer


276

Typesetting

903

Hybrid electric vehicles (hevs)


277

Seal for a joint or juncture

930

Peptide or protein sequence


278

Land vehicles: animal draft appliances

968

Horology


279

Chucks or sockets

976

Nuclear technology


280

Land vehicles

977

Nanotechnology


281

Books, strips, and leaves

984

Musical instruments


283

Printed matter

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


285

Pipe joints or couplings

D01

Edible products


289

Knots and knot tying

D02

Apparel and haberdashery


290

Prime-mover dynamo plants

D03

Travel goods and personal belongings


291

Track sanders

D04

Brushware


292

Closure fasteners

D05

Textile or paper yard goods; sheet material


293

Vehicle fenders

D06

Furnishings


294

Handling: hand and hoist-line implements

D07

Equipment for preparing or serving food or drink not elsewhere specified


295

Railway wheels and axles

D08

Tools and hardware


296

Land vehicles: bodies and tops

D09

Packages and containers for goods


297

Chairs and seats

D10

Measuring, testing, or signalling instruments


298

Land vehicles: dumping

D11

Jewelry, symbolic insignia, and ornaments


299

Mining or in situ disintegration of hard material

D12

Transportation


300

Brush, broom, and mop making

D13

Equipment for production, distribution, or transformation of energy


301

Land vehicles: wheels and axles

D14

Recording, communication, or information retrieval equipment


303

Fluid-pressure and analogous brake systems

D15

Machines not elsewhere specified


305

Wheel substitutes for land vehicles

D16

Photography and optical equipment


307

Electrical transmission or interconnection systems

D17

Musical instruments


310

Electrical generator or motor structure

D18

Printing and office machinery


312

Supports: cabinet structure

D19

Office supplies; artists` and teachers` materials


313

Electric lamp and discharge devices

D20

Sales and advertising equipment


314

Electric lamp and discharge devices: consumable electrodes

D21

Games, toys, and sports goods


315

Electric lamp and discharge devices: systems

D22

Arms, pyrotechnics, hunting and fishing equipment


318

Electricity: motive power systems

D23

Environmental heating and cooling; fluid handling and sanitary equipment


320

Electricity: battery or capacitor charging or discharging

D24

Medical and laboratory equipment


322

Electricity: single generator systems

D25

Building units and construction elements


323

Electricity: power supply or regulation systems

D26

Lighting


324

Electricity: measuring and testing

D27

Tobacco and smokers' supplies


326

Electronic digital logic circuitry

D28

Cosmetic products and toilet articles


327

Miscellaneous active electrical nonlinear devices, circuits, and systems

D29

Equipment for safety, protection, and rescue


329

Demodulators

D30

Animal husbandry




D32

Washing, cleaning, or drying machine




D34

Material or article handling equipment




D99

Miscellaneous




G9B

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