Top IPC subclasses
|
1
|
G03G
|
6
|
Electrography; electrophotography; magnetography
|
|
2
|
C09B
|
5
|
organic dyes or closely-related compounds for producing dyesmordantslakes
|
|
3
|
A61K
|
4
|
Preparations for medical, dental, or toilet purposes
|
|
4
|
C08F
|
4
|
macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
|
|
5
|
C07D
|
2
|
Heterocyclic compounds
|
|
6
|
G03C
|
2
|
photosensitive materials for photographic purposesphotographic processes, e.g. cine, x-ray, colour,
|
|
7
|
A61P
|
1
|
Specific therapeutic activity of chemical compounds or medicinal preparations
|
|
8
|
C07F
|
1
|
acyclic, carbocyclic, or heterocyclic compounds containing elements other than carbon, hydrogen, hal
|