Top IPC subclasses
1
|
C07C
|
7
|
Acyclic or carbocyclic compounds
|
2
|
A61P
|
6
|
Specific therapeutic activity of chemical compounds or medicinal preparations
|
3
|
C07D
|
3
|
Heterocyclic compounds
|
4
|
G03G
|
3
|
Electrography; electrophotography; magnetography
|
5
|
C08G
|
2
|
macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsatu
|
6
|
G03C
|
2
|
photosensitive materials for photographic purposesphotographic processes, e.g. cine, x-ray, colour,
|