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 13 of 14

Technology Subclasses · Page 13 (601–650 of 670)

Code Technology Area Class Patents
B41K STAMPS; Stamping OR Numbering Apparatus OR Devices B41 197
F22G Superheating OF Steam F22 190
H01K Electric Incandescent Lamps H01 189
G10C Pianos, Harpsichords, Spinets OR Similar Stringed Musical Instruments With ONE OR More Keyboards G10 183
A42C Manufacturing OR Trimming Head Coverings, e.g. Hats A42 180
G21H Obtaining Energy From Radioactive SOURCES; Applications OF Radiation From Radioactive Sources, NOT Otherwise Provided FOR; Utilising Cosmic Radiation G21 179
C13B Production OF SUCROSE; Apparatus Specially Adapted Therefor C13 174
C14C Chemical Treatment OF Hides, Skins OR Leather, e.g. Tanning, Impregnating, FINISHING; Apparatus THEREFOR; Compositions FOR Tanning C14 170
B27L Removing Bark OR Vestiges OF Branches ; Splitting WOOD; Manufacture OF Veneer, Wooden Sticks, Wood Shavings, Wood Fibres OR Wood Powder B27 168
B43M Bureau Accessories NOT Otherwise Provided FOR B43 167
C06C Detonating OR Priming DEVICES; Fuses ; Chemical LIGHTERS; Pyrophoric Compositions C06 165
C06D Means FOR Generating Smoke OR MIST; Gas-attack COMPOSITIONS; Generation OF GAS FOR Blasting OR Propulsion (CHEMICAL PART) C06 164
C12F Recovery OF By-products OF Fermented Solutions ; Denatured ALCOHOL; Preparation Thereof C12 159
F16T Steam Traps OR Like Apparatus FOR Draining-off Liquids From Enclosures Predominantly Containing Gases OR Vapours F16 144
F15C Fluid-circuit Elements Predominantly Used FOR Computing OR Control Purposes F15 136
D06Q Decorating Textiles D06 135
B01B BOILING; Boiling Apparatus ; ; EVAPORATION; Evaporation Apparatus B01 124
B42P Indexing Scheme Relating TO Books, Filing Appliances OR THE Like B42 115
B41L Apparatus OR Devices FOR Manifolding, Duplicating OR Printing FOR Office OR Other Commercial PURPOSES; Addressing Machines OR Like Series-printing Machines B41 113
G12B Constructional Details OF Instruments, OR Comparable Details OF Other Apparatus, NOT Otherwise Provided FOR G12 112
C14B Mechanical Treatment OR Processing OF Skins, Hides OR Leather IN GENERAL; Pelt-shearing MACHINES; Intestine-splitting Machines C14 102
C23D Enamelling OF, OR Applying A Vitreous Layer TO, Metals C23 94
D01B Mechanical Treatment OF Natural Fibrous OR Filamentary Material TO Obtain Fibres OF Filaments, e.g. FOR Spinning D01 91
B31C Making Wound Articles, e.g. Wound Tubes, OF Paper, Cardboard OR Material Worked IN A Manner Analogous TO Paper B31 88
D03J Auxiliary Weaving APPARATUS; Weavers' TOOLS; Shuttles D03 87
B21G Making Needles, Pins OR Nails OF Metal B21 86
D03C Shedding MECHANISMS; Pattern Cards OR CHAINS; Punching OF CARDS; Designing Patterns D03 85
A63K RACING; Riding SPORTS; Equipment OR Accessories Therefor A63 80
A63D Bowling Games, e.g. Skittles, Bocce OR BOWLS; Installations THEREFOR; Bagatelle OR Similar GAMES; Billiards A63 78
C09F Natural RESINS; French POLISH; DRYING-OILS; OIL Drying Agents, i.e. SICCATIVES; Turpentine C09 77
B02B Preparing Grain FOR MILLING; Refining Granular Fruit TO Commercial Products BY Working THE Surface B02 74
B60V Air-cushion Vehicles B60 71
F27M Indexing Scheme Relating TO Aspects OF THE Charges OR Furnaces, Kilns, Ovens OR Retorts F27 69
D01C Chemical OR Biological Treatment OF Natural Filamentary OR Fibrous Material TO Obtain Filaments OR Fibres FOR SPINNING; Carbonising Rags TO Recover Animal Fibres D01 69
B68C SADDLES; Stirrups B68 67
F16S Constructional Elements IN GENERAL; Structures Built-up From Such Elements, IN General F16 64
H05C Electric Circuits OR Apparatus Specially Designed FOR USE IN Equipment FOR Killing, Stunning, OR Guiding Living Beings H05 59
G06J Hybrid Computing Arrangements G06 55
G10F Automatic Musical Instruments G10 54
B21L Making Metal Chains B21 54
B61J Shifting OR Shunting OF Rail Vehicles B61 51
F23H Grates ; Cleaning OR Raking Grates F23 49
D04D TRIMMINGS; Ribbons, Tapes OR Bands, NOT Otherwise Provided FOR D04 47
B68B HARNESS; Devices Used IN Connection THEREWITH; Whips OR THE Like B68 40
G03D Apparatus FOR Processing Exposed Photographic Materials ; Accessories Therefor G03 38
D02H Warping, Beaming OR Leasing D02 37
G06C Digital Computers IN Which ALL THE Computation IS Effected Mechanically G06 35
A01L Shoeing OF Animals A01 35
B27J Mechanical Working OF Cane, Cork, OR Similar Materials B27 32
B27H Bending Wood OR Similar MATERIAL; COOPERAGE; Making Wheels From Wood OR Similar Material B27 30

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