Top IPC subclasses
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1
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H01L
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18
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Semiconductor devices; electric solid state devices not otherwise provided for
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2
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H02S
|
14
|
|
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3
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F24S
|
9
|
|
|
4
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E04D
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5
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roof coveringssky-lightsguttersroof-working tools
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5
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F24J
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5
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Production or use of heat not otherwise provided for
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6
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G09F
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3
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displayingadvertisingsignslabels or name-platesseals
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7
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F25D
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3
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refrigeratorscold roomsice-boxescooling or freezing apparatus not covered by any other subclass
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8
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A63B
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3
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apparatus for physical training, gymnastics, swimming, climbing, or fencingball gamestraining equipm
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9
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F25B
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3
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refrigeration machines, plants, or systemscombined heating and refrigeration systemsheat pump system
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|
10
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E04B
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3
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General building constructions; walls, e.g. partitions; roofs; floors; ceilings; insulation or other protection of buildings
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|
11
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E04F
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2
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finishing work on buildings, e.g. stairs, floors
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|
12
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G06F
|
1
|
electric digital data processing
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|
13
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A61B
|
1
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Diagnosis; surgery; identification
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|
14
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E04C
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1
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Structural elements; building materials
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|
15
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F24H
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1
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fluid heaters, e.g. water or air heaters, having heat-generating means, in general
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|
16
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A63G
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1
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merry-go-roundsswingsrocking-horseschutesswitchbackssimilar devices for public amusement
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17
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F21V
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1
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functional features or details of lighting devices or systems thereofstructural combinations of ligh
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|
18
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G09B
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1
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educational or demonstration appliancesappliances for teaching, or communicating with, the blind, de
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|
19
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A63F
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1
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card, board, or roulette gamesindoor games using small moving playing bodiesgames not otherwise prov
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20
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H05K
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1
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printed circuitscasings or constructional details of electric apparatusmanufacture of assemblages of
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