Top IPC subclasses
1
|
C07B
|
2
|
General methods of organic chemistry; apparatus therefor
|
2
|
B01J
|
2
|
Chemical or physical processes, e.g. catalysis, colloid chemistry; their relevant apparatus
|
3
|
C08B
|
1
|
polysaccharidesderivatives thereof
|
4
|
A61K
|
1
|
Preparations for medical, dental, or toilet purposes
|