Top IPC subclasses
1
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C07D
|
2
|
Heterocyclic compounds
|
2
|
C12R
|
2
|
Indexing scheme associated with subclasses C12C-C12Q, relating to micro-organisms
|
3
|
C07F
|
2
|
acyclic, carbocyclic, or heterocyclic compounds containing elements other than carbon, hydrogen, hal
|
4
|
C12N
|
2
|
Micro-organisms or enzymes; compositions thereof; propagating, preserving, or maintaining micro-organisms; mutation or genetic engineering; culture media
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