PlainPatent

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 11 of 14

Technology Subclasses · Page 11 (501–550 of 670)

Code Technology Area Class Patents
A24C Machines FOR Making Cigars OR Cigarettes A24 702
C25F Processes FOR THE Electrolytic Removal OF Materials From OBJECTS; Apparatus Therefor C25 701
B44F Special Designs OR Pictures B44 693
A62D Chemical Means FOR Extinguishing Fires OR FOR Combating OR Protecting Against Harmful Chemical AGENTS; Chemical Materials FOR USE IN Breathing Apparatus A62 692
F05C Indexing Scheme Relating TO Materials, Material Properties OR Material Characteristics FOR Machines, Engines OR Pumps Other Than Non-positive-displacement Machines OR Engines F05 683
A41F Garment FASTENINGS; Suspenders A41 683
G06G Analogue Computers G06 675
A41C CORSETS; Brassieres A41 669
H03J Tuning Resonant CIRCUITS; Selecting Resonant Circuits H03 659
B03B Separating Solid Materials Using Liquids OR Using Pneumatic Tables OR Jigs B03 658
E06C Ladders E06 653
A01J Manufacture OF Dairy Products A01 653
E21F Safety Devices, Transport, Filling-up, Rescue, Ventilation, OR Draining IN OR OF Mines OR Tunnels E21 641
D06B Treating Textile Materials Using Liquids, Gases OR Vapours D06 640
G21G Conversion OF Chemical ELEMENTS; Radioactive Sources G21 629
G04R Radio-controlled Time-pieces G04 623
B67B Applying Closure Members TO Bottles Jars, OR Similar CONTAINERS; Opening Closed Containers B67 619
E01D Construction OF Bridges, ; Elevated ROADWAYS; OR VIADUCTS; Assembly OF Bridges E01 612
B03D FLOTATION; Differential Sedimentation B03 611
A23N Machines OR Apparatus FOR Treating Harvested Fruit, Vegetables OR Flower Bulbs IN Bulk, NOT Otherwise Provided FOR; Peeling Vegetables OR Fruit IN BULK; Apparatus FOR Preparing Animal Feeding- Stuffs A23 606
D04C Braiding OR Manufacture OF Lace, Including Bobbin-net OR Carbonised LACE; Braiding MACHINES; BRAID; Lace D04 584
A21C Machines OR Equipment FOR Making OR Processing DOUGHS; Handling Baked Articles Made From Dough A21 581
C06B Explosives OR Thermic Compositions ; Manufacture THEREOF; USE OF Single Substances AS Explosives C06 579
B42C Bookbinding B42 578
F23M Casings, Linings, Walls OR Doors Specially Adapted FOR Combustion Chambers, e.g. FIREBRIDGES; Devices FOR Deflecting AIR, Flames OR Combustion Products IN Combustion CHAMBERS; Safety Arrangements Specially Adapted FOR Combustion APPARATUS; Details OF Combustion Chambers, NOT Otherwise Provided FOR F23 568
B41N Printing Plates OR Foils ; Materials FOR Surfaces Used IN Printing Machines FOR Printing, Inking, Damping, OR THE LIKE; Preparing Such Surfaces FOR USE AND Conserving Them B41 568
B64B Lighter-than AIR Aircraft B64 560
B60M Power Supply Lines, AND Devices Along Rails, FOR Electrically- Propelled Vehicles B60 559
B63J Auxiliaries ON Vessels B63 559
H05F Static ELECTRICITY; Naturally-occurring Electricity H05 557
A21B Bakers' OVENS; Machines OR Equipment FOR Baking A21 546
D05C EMBROIDERING; Tufting D05 545
A46D Manufacture OF Brushes A46 538
A63J Devices FOR Theatres, Circuses, OR THE LIKE; Conjuring Appliances OR THE Like A63 535
B41C Processes FOR THE Manufacture OR Reproduction OF Printing Surfaces B41 534
B23F Making Gears OR Toothed Racks B23 529
A41H Appliances OR Methods FOR Making Clothes, e.g. FOR Dress-making OR FOR Tailoring, NOT Otherwise Provided FOR A41 522
F23Q Ignition ; Extinguishing-devices F23 516
C05B Phosphatic Fertilisers C05 513
B28C Preparing CLAY; Producing Mixtures Containing Clay OR Cementitious Material, e.g. Plaster B28 511
B61K Auxiliary Equipment Specially Adapted FOR Railways, NOT Otherwise Provided FOR B61 506
C12C BEER; Preparation OF Beer BY Fermentation ; Preparation OF Malt FOR Making BEER; Preparation OF Hops FOR Making Beer C12 506
B27G Accessory Machines OR Apparatus FOR Working Wood OR Similar MATERIALS; Tools FOR Working Wood OR Similar Materials ; Safety Devices FOR Wood Working Machines OR Tools B27 503
B61H Brakes OR Other Retarding Devices Specially Adapted FOR Rail VEHICLES; Arrangement OR Disposition Thereof IN Rail Vehicles B61 502
F28C Heat-exchange Apparatus, NOT Provided FOR IN Another Subclass, IN Which THE Heat-exchange Media Come Into Direct Contact Without Chemical Interaction F28 493
H03C Modulation H03 490
D06C Finishing, Dressing, Tentering OR Stretching Textile Fabrics D06 476
F41J TARGETS; Target RANGES; Bullet Catchers F41 473
B82B Nanostructures Formed BY Manipulation OF Individual Atoms, Molecules, OR Limited Collections OF Atoms OR Molecules AS Discrete UNITS; Manufacture OR Treatment Thereof B82 469
D21B Fibrous RAW Materials OR Their Mechanical Treatment D21 452

CPC (Cooperative Patent Classification) data from USPTO PatentsView. Patents granted 2015–2025.