Top IPC subclasses
1
|
C07C
|
2
|
Acyclic or carbocyclic compounds
|
2
|
C09K
|
2
|
materials for applications not otherwise provided forapplications of materials not otherwise provide
|
3
|
C07D
|
1
|
Heterocyclic compounds
|
4
|
C08L
|
1
|
Compositions of macromolecular compounds
|
5
|
B82B
|
1
|
nano-structuresmanufacture or treatment thereof
|
6
|
C01G
|
1
|
Compounds containing metals not covered by subclasses C01D or C01F
|