Top IPC subclasses
1
|
G03C
|
6
|
photosensitive materials for photographic purposesphotographic processes, e.g. cine, x-ray, colour,
|
2
|
H01L
|
3
|
Semiconductor devices; electric solid state devices not otherwise provided for
|
3
|
G11C
|
1
|
static stores
|
4
|
G02B
|
1
|
optical elements, systems, or apparatus
|
5
|
C08L
|
1
|
Compositions of macromolecular compounds
|
6
|
C08C
|
1
|
treatment or chemical modification of rubbers
|
7
|
G03G
|
1
|
Electrography; electrophotography; magnetography
|
8
|
H04R
|
1
|
loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-ai
|
9
|
C30B
|
1
|
single-crystal growthunidirectional solidification of eutectic material or unidirectional demixing o
|
10
|
G01B
|
1
|
measuring length, thickness, or similar linear dimensionsmeasuring anglesmeasuring areasmeasuring ir
|