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