Top IPC subclasses
|
1
|
B82B
|
5
|
nano-structuresmanufacture or treatment thereof
|
|
2
|
C01G
|
5
|
Compounds containing metals not covered by subclasses C01D or C01F
|
|
3
|
B01J
|
3
|
Chemical or physical processes, e.g. catalysis, colloid chemistry; their relevant apparatus
|
|
4
|
C25D
|
3
|
processes for the electrolytic or electrophoretic production of coatingselectroformingjoining workpi
|
|
5
|
C01F
|
3
|
compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium
|
|
6
|
C02F
|
2
|
Treatment of water, waste water, sewage, or sludge
|
|
7
|
H01L
|
2
|
Semiconductor devices; electric solid state devices not otherwise provided for
|
|
8
|
C09K
|
2
|
materials for applications not otherwise provided forapplications of materials not otherwise provide
|
|
9
|
H01S
|
1
|
devices using stimulated emission
|
|
10
|
C01B
|
1
|
non-metallic elementscompounds thereof
|
|
11
|
B81C
|
1
|
processes or apparatus specially adapted for the manufacture or treatment of micro-structural device
|
|
12
|
C25B
|
1
|
Electrolytic or electrophoretic processes for the production of compounds or non- metals; apparatus therefor
|
|
13
|
C23C
|
1
|
Coating metallic material; coating material with metallic material; surface treatment of metallic material by diffusion into the surface, by chemical conversion or substitution; coating by vacuum evaporation, by sputtering, by ion implantation or by chemical vapour deposition, in general
|
|
14
|
B82Y
|
1
|
|