Top IPC subclasses
1
|
C07F
|
3
|
acyclic, carbocyclic, or heterocyclic compounds containing elements other than carbon, hydrogen, hal
|
2
|
C12N
|
3
|
Micro-organisms or enzymes; compositions thereof; propagating, preserving, or maintaining micro-organisms; mutation or genetic engineering; culture media
|
3
|
C07C
|
2
|
Acyclic or carbocyclic compounds
|
4
|
A61K
|
2
|
Preparations for medical, dental, or toilet purposes
|