Patent Technology Classes
Browse US patents by Cooperative Patent Classification (CPC) technology area, built from official USPTO data via PatentsView. See our methodology.
670 CPC subclasses · Page 12 of 14
Technology Subclasses · Page 12 (551–600 of 670)
| Code | Technology Area | Class | Patents |
|---|---|---|---|
| F28G | Cleaning OF Internal OR External Surfaces OF Heat-exchange OR Heat-transfer Conduits, e.g. Water Tubes OR Boilers | F28 | 438 |
| F24T | Geothermal COLLECTORS; Geothermal Systems | F24 | 436 |
| A45B | Walking Sticks ; UMBRELLAS; Ladies' OR Like Fans | A45 | 436 |
| A47H | Furnishings FOR Windows OR Doors | A47 | 430 |
| F28B | Steam OR Vapour Condensers | F28 | 416 |
| F24B | Domestic Stoves OR Ranges FOR Solid Fuels ; Implements FOR USE IN Connection With Stoves OR Ranges | F24 | 409 |
| F03C | Positive-displacement Engines Driven BY Liquids | F03 | 404 |
| G10G | Representation OF MUSIC; Recording Music IN Notation FORM; Accessories FOR Music OR Musical Instruments NOT Otherwise Provided FOR, e.g. Supports | G10 | 395 |
| C12G | WINE; Preparation THEREOF; Alcoholic Beverages ; Preparation OF Alcoholic Beverages NOT Provided FOR IN Subclasses C12c OR C12h | C12 | 389 |
| B27K | Processes, Apparatus OR Selection OF Substances FOR Impregnating, Staining, Dyeing, Bleaching OF Wood OR Similar Materials, OR Treating OF Wood OR Similar Materials With Permeant Liquids, NOT Otherwise Provided FOR ; Chemical OR Physical Treatment OF Cork, Cane, Reed, Straw OR Similar Materials | B27 | 387 |
| B60F | Vehicles FOR USE Both ON Rail AND ON ROAD; Amphibious OR Like VEHICLES; Convertible Vehicles | B60 | 386 |
| B21H | Making Particular Metal Objects BY Rolling, e.g. Screws, Wheels, Rings, Barrels, Balls | B21 | 386 |
| C12H | Pasteurisation, Sterilisation, Preservation, Purification, Clarification OR Ageing OF Alcoholic BEVERAGES; Methods FOR Altering THE Alcohol Content OF Fermented Solutions OR Alcoholic Beverages | C12 | 386 |
| A22B | Slaughtering | A22 | 381 |
| A41G | Artificial FLOWERS; WIGS; MASKS; Feathers | A41 | 380 |
| D01H | Spinning OR Twisting | D01 | 375 |
| G21B | Fusion Reactors | G21 | 372 |
| D21G | CALENDERS; Accessories FOR Paper-making Machines | D21 | 371 |
| D02J | Finishing OR Dressing OF Filaments, Yarns, Threads, Cords, Ropes OR THE Like | D02 | 369 |
| B42F | Sheets Temporarily Attached TOGETHER; Filing APPLIANCES; File CARDS; Indexing | B42 | 359 |
| B43L | Articles FOR Writing OR Drawing UPON; ; Writing OR Drawing AIDS;; Accessories FOR Writing OR Drawing | B43 | 358 |
| C07G | Compounds OF Unknown Constitution | C07 | 358 |
| B68G | Methods, Equipment, OR Machines FOR USE IN UPHOLSTERING; Upholstery NOT Otherwise Provided FOR | B68 | 357 |
| E05G | Safes OR Strong-rooms FOR VALUABLES; Bank Protection DEVICES; Safety Transaction Partitions | E05 | 351 |
| G06M | Counting MECHANISMS; Counting OF Objects NOT Otherwise Provided FOR | G06 | 332 |
| B42B | Permanently Attaching Together Sheets, Quires OR Signatures OR Permanently Attaching Objects Thereto | B42 | 331 |
| F03H | Producing A Reactive Propulsive Thrust, NOT Otherwise Provided FOR | F03 | 321 |
| B44D | Painting OR Artistic Drawing, NOT Otherwise Provided FOR; Preserving PAINTINGS; Surface Treatment TO Obtain Special Artistic Surface Effects OR Finishes | B44 | 321 |
| B61G | COUPLINGS; Draught AND Buffing Appliances | B61 | 314 |
| A44D | Indexing Scheme Relating TO Buttons, Pins, Buckles OR Slide Fasteners, AND TO Jewellery, Bracelets OR Other Personal Adornments | A44 | 314 |
| D21D | Treatment OF THE Materials Before Passing TO THE Paper-making Machine | D21 | 314 |
| F41F | Apparatus FOR Launching Projectiles OR Missiles From Barrels, e.g. Cannons ; Launchers FOR Rockets OR TORPEDOES; Harpoon Guns | F41 | 306 |
| B27M | Working OF Wood NOT Provided FOR IN Subclasses B27b - B27L; Manufacture OF Specific Wooden Articles | B27 | 306 |
| G04D | Apparatus OR Tools Specially Designed FOR Making OR Maintaining Clocks OR Watches | G04 | 303 |
| D01G | Preliminary Treatment OF Fibres, e.g. FOR Spinning | D01 | 292 |
| B23G | Thread CUTTING; Working OF Screws, Bolt Heads, OR Nuts, IN Conjunction Therewith | B23 | 283 |
| B44B | Machines, Apparatus OR Tools FOR Artistic Work, e.g. FOR Sculpturing, Guilloching, Carving, Branding, Inlaying | B44 | 274 |
| D21J | FIBREBOARD; Manufacture OF Articles From Cellulosic Fibrous Suspensions OR From Papier-mache | D21 | 270 |
| D05D | Indexing Scheme Associated With Subclasses D05b AND D05c, Relating TO Sewing, Embroidering AND Tufting | D05 | 266 |
| C10C | Working-up Pitch, Asphalt, Bitumen, TAR; Pyroligneous Acid | C10 | 264 |
| F22D | Preheating, OR Accumulating Preheated, Feed-water FOR Steam GENERATION; Feed-water Supply FOR Steam GENERATION; Controlling Water Level FOR Steam GENERATION; Auxiliary Devices FOR Promoting Water Circulation Within Steam Boilers | F22 | 238 |
| B27F | Dovetailed WORK; TENONS; Slotting Machines FOR Wood OR Similar MATERIAL; Nailing OR Stapling Machines | B27 | 238 |
| G03C | Photosensitive Materials FOR Photographic Purposes ; Photographic Processes, e.g. Cine, X-ray, Colour, Stereo-photographic PROCESSES; Auxiliary Processes IN Photography | G03 | 231 |
| G06E | Optical Computing DEVICES; ; Computing Devices Using Other Radiations With Similar Properties | G06 | 229 |
| D06L | Dry-cleaning, Washing OR Bleaching Fibres, Filaments, Threads, Yarns, Fabrics, Feathers OR Made-up Fibrous GOODS; Bleaching Leather OR Furs | D06 | 225 |
| F23B | Methods OR Apparatus FOR Combustion Using Only Solid Fuel | F23 | 220 |
| B27C | Planing, Drilling, Milling, Turning OR Universal Machines FOR Wood OR Similar Material | B27 | 208 |
| D06H | Marking, Inspecting, Seaming OR Severing Textile Materials | D06 | 206 |
| F24V | Collection, Production OR USE OF Heat NOT Otherwise Provided FOR | F24 | 201 |
| B27D | Working Veneer OR Plywood | B27 | 200 |
CPC (Cooperative Patent Classification) data from USPTO PatentsView. Patents granted 2015–2025.