Top IPC subclasses
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1
|
C02F
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38
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Treatment of water, waste water, sewage, or sludge
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|
2
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C25B
|
19
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Electrolytic or electrophoretic processes for the production of compounds or non- metals; apparatus therefor
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|
3
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C12P
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17
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fermentation or enzyme-using processes to synthesise a desired chemical compound or composition or t
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4
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C07C
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15
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Acyclic or carbocyclic compounds
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|
5
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C12M
|
9
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apparatus for enzymology or microbiology
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|
6
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B01D
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8
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Separation
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|
7
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C01B
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5
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non-metallic elementscompounds thereof
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|
8
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C01G
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5
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Compounds containing metals not covered by subclasses C01D or C01F
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9
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C12F
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5
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recovery of by-products of fermented solutionsdenaturing of, or denatured, alcohol
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|
10
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C07H
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3
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Sugars; derivatives thereof; nucleosides; nucleotides; nucleic acids
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|
11
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A23K
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3
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Feeding-stuffs specially adapted for animals; methods specially adapted for production thereof
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|
12
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B27K
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3
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processes, apparatus or selection of substances for impregnating, staining, dyeing, bleaching of woo
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|
13
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C07J
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2
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steroids
|
|
14
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C01C
|
2
|
ammoniacyanogencompounds thereof
|
|
15
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C07F
|
2
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acyclic, carbocyclic, or heterocyclic compounds containing elements other than carbon, hydrogen, hal
|
|
16
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A01N
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2
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Preservation of bodies of humans or animals or plants or parts thereof; biocides, e.g. as disinfectants, as pesticides or as herbicides; pest repellants or attractants; plant growth regulators
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|
17
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A01C
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1
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Planting; sowing; fertilising
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|
18
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A61K
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1
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Preparations for medical, dental, or toilet purposes
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|
19
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A23L
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1
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Foods, foodstuffs, or non-alcoholic beverages, not covered by subclasses A21D or A23B-A23J; their preparation or treatment, e.g. cooking, modification of nutritive qualities, physical treatment; preservation of foods or foodstuffs, in general
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