Top IPC subclasses
1
|
C07C
|
3
|
Acyclic or carbocyclic compounds
|
2
|
G03G
|
3
|
Electrography; electrophotography; magnetography
|
3
|
G01B
|
3
|
measuring length, thickness, or similar linear dimensionsmeasuring anglesmeasuring areasmeasuring ir
|
4
|
C08F
|
2
|
macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
|
5
|
G03C
|
1
|
photosensitive materials for photographic purposesphotographic processes, e.g. cine, x-ray, colour,
|