Top IPC subclasses
|
1
|
B01J
|
6
|
Chemical or physical processes, e.g. catalysis, colloid chemistry; their relevant apparatus
|
|
2
|
C07C
|
3
|
Acyclic or carbocyclic compounds
|
|
3
|
C01B
|
2
|
non-metallic elementscompounds thereof
|
|
4
|
C02F
|
2
|
Treatment of water, waste water, sewage, or sludge
|
|
5
|
A61K
|
2
|
Preparations for medical, dental, or toilet purposes
|
|
6
|
C07B
|
2
|
General methods of organic chemistry; apparatus therefor
|
|
7
|
C08J
|
2
|
working-upgeneral processes of compoundingafter-treatment not covered by subclasses , , , or
|
|
8
|
C07D
|
1
|
Heterocyclic compounds
|
|
9
|
A61P
|
1
|
Specific therapeutic activity of chemical compounds or medicinal preparations
|
|
10
|
C08F
|
1
|
macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
|
|
11
|
C07F
|
1
|
acyclic, carbocyclic, or heterocyclic compounds containing elements other than carbon, hydrogen, hal
|