Top IPC subclasses
1
|
C07C
|
4
|
Acyclic or carbocyclic compounds
|
2
|
C23F
|
4
|
non-mechanical removal of metallic material from surfacesinhibiting corrosion of metallic materialin
|
3
|
C12R
|
1
|
Indexing scheme associated with subclasses C12C-C12Q, relating to micro-organisms
|
4
|
C07F
|
1
|
acyclic, carbocyclic, or heterocyclic compounds containing elements other than carbon, hydrogen, hal
|
5
|
C12N
|
1
|
Micro-organisms or enzymes; compositions thereof; propagating, preserving, or maintaining micro-organisms; mutation or genetic engineering; culture media
|