Top IPC subclasses
|
1
|
C02F
|
21
|
Treatment of water, waste water, sewage, or sludge
|
|
2
|
B01J
|
14
|
Chemical or physical processes, e.g. catalysis, colloid chemistry; their relevant apparatus
|
|
3
|
C12N
|
8
|
Micro-organisms or enzymes; compositions thereof; propagating, preserving, or maintaining micro-organisms; mutation or genetic engineering; culture media
|
|
4
|
C12M
|
4
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apparatus for enzymology or microbiology
|
|
5
|
C12R
|
4
|
Indexing scheme associated with subclasses C12C-C12Q, relating to micro-organisms
|
|
6
|
A23C
|
3
|
dairy products, e.g. milk, butter, cheesemilk or cheese substitutesmaking thereof
|
|
7
|
C08B
|
2
|
polysaccharidesderivatives thereof
|
|
8
|
B01D
|
1
|
Separation
|
|
9
|
A01J
|
1
|
manufacture of dairy products
|
|
10
|
C01G
|
1
|
Compounds containing metals not covered by subclasses C01D or C01F
|
|
11
|
C07F
|
1
|
acyclic, carbocyclic, or heterocyclic compounds containing elements other than carbon, hydrogen, hal
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