Top IPC subclasses
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1
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B01D
|
3
|
Separation
|
|
2
|
C11B
|
2
|
producing (pressing, extraction), refining or preserving fats, fatty substances (e.g. lanolin), fatt
|
|
3
|
H02K
|
1
|
dynamo-electric machines
|
|
4
|
H01L
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1
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Semiconductor devices; electric solid state devices not otherwise provided for
|
|
5
|
F15D
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1
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fluid dynamics, i.e. methods or means for influencing the flow of gases or liquids
|
|
6
|
C10G
|
1
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cracking hydrocarbon oilsproduction of liquid hydrocarbon mixtures, e.g. by destructive hydrogenatio
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|
7
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C25D
|
1
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processes for the electrolytic or electrophoretic production of coatingselectroformingjoining workpi
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8
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B03C
|
1
|
magnetic or electrostatic separation of solid materials from solid materials or fluidsseparation by
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