Top IPC subclasses
1
|
C07C
|
11
|
Acyclic or carbocyclic compounds
|
2
|
C09B
|
8
|
organic dyes or closely-related compounds for producing dyesmordantslakes
|
3
|
C07F
|
6
|
acyclic, carbocyclic, or heterocyclic compounds containing elements other than carbon, hydrogen, hal
|