Top IPC subclasses
1
|
H01L
|
3
|
Semiconductor devices; electric solid state devices not otherwise provided for
|
2
|
C08L
|
2
|
Compositions of macromolecular compounds
|
3
|
C01G
|
2
|
Compounds containing metals not covered by subclasses C01D or C01F
|
4
|
C09K
|
2
|
materials for applications not otherwise provided forapplications of materials not otherwise provide
|
5
|
C30B
|
2
|
single-crystal growthunidirectional solidification of eutectic material or unidirectional demixing o
|
6
|
C01B
|
1
|
non-metallic elementscompounds thereof
|
7
|
B82B
|
1
|
nano-structuresmanufacture or treatment thereof
|
8
|
F24J
|
1
|
Production or use of heat not otherwise provided for
|