Top IPC subclasses
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1
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C02F
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22
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Treatment of water, waste water, sewage, or sludge
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|
2
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C05F
|
11
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organic fertilisers not covered by subclasses , , e.g. fertilisers from waste or refuse
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|
3
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A23K
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4
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Feeding-stuffs specially adapted for animals; methods specially adapted for production thereof
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4
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B09B
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3
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disposal of solid waste
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5
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C12P
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3
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fermentation or enzyme-using processes to synthesise a desired chemical compound or composition or t
|
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6
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C07C
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2
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Acyclic or carbocyclic compounds
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|
7
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C01C
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2
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ammoniacyanogencompounds thereof
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|
8
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C01B
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2
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non-metallic elementscompounds thereof
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|
9
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C12R
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2
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Indexing scheme associated with subclasses C12C-C12Q, relating to micro-organisms
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|
10
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C12N
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2
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Micro-organisms or enzymes; compositions thereof; propagating, preserving, or maintaining micro-organisms; mutation or genetic engineering; culture media
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|
11
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B03D
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1
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flotationdifferential sedimentation
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|
12
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G01N
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1
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Investigating or analysing materials by determining their chemical or physical properties
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|
13
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C12S
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1
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processes using enzymes or micro-organisms to liberate, separate or purify a pre-existing compound o
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|
14
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C09K
|
1
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materials for applications not otherwise provided forapplications of materials not otherwise provide
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|
15
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A01K
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1
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animal husbandrycare of birds, fishes, insectsfishingrearing or breeding animals, not otherwise prov
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|
16
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A01G
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1
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Horticulture; cultivation of vegetables, flowers, rice, fruit, vines, hops, or seaweed; forestry; watering
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|
17
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A01B
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1
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Soil working in agriculture or forestry; parts, details, or accessories of agricultural machines or implements, in general
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