Top IPC subclasses
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1
|
B01J
|
6
|
Chemical or physical processes, e.g. catalysis, colloid chemistry; their relevant apparatus
|
|
2
|
B27K
|
5
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processes, apparatus or selection of substances for impregnating, staining, dyeing, bleaching of woo
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|
3
|
A62D
|
4
|
chemical means for extinguishing firesprocesses for making harmful chemical substances harmless, or
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|
4
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C01C
|
3
|
ammoniacyanogencompounds thereof
|
|
5
|
C02F
|
3
|
Treatment of water, waste water, sewage, or sludge
|
|
6
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B09B
|
2
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disposal of solid waste
|
|
7
|
C12F
|
2
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recovery of by-products of fermented solutionsdenaturing of, or denatured, alcohol
|
|
8
|
C09C
|
2
|
treatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling
|
|
9
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B08B
|
1
|
cleaning in generalprevention of fouling in general
|
|
10
|
C12G
|
1
|
Wine; other alcoholic beverages; preparation thereof
|
|
11
|
C09D
|
1
|
coating compositions, e.g. paints, varnishes, lacquersfilling pasteschemical paint or ink removersin
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