Top IPC subclasses
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1
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D21H
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13
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pulp compositionspreparation thereof not covered by subclasses , impregnating or coating of papertre
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2
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B42D
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4
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booksbook coversloose leavesprinted matter of special format or style not otherwise provided fordevi
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3
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H01L
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3
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Semiconductor devices; electric solid state devices not otherwise provided for
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4
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G07D
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3
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sorting, testing, changing, delivering, or otherwise handling coinstesting or changing paper currenc
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5
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B41M
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2
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printing, duplicating, marking, or copying processescolour printing
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6
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A47B
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2
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tablesdesksoffice furniturecabinetsdrawersgeneral details of furniture
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7
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G06K
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2
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Recognition of data; presentation of data; record carriers; handling record carriers
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8
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B44F
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1
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special designs or pictures
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9
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G07F
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1
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coin-freed or like apparatus
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10
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D21F
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1
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paper-making machinesmethods of producing paper thereon
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11
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E06B
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1
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fixed or movable closures for openings in buildings, vehicles, fences, or like enclosures, in genera
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