Top IPC subclasses
|
1
|
G08B
|
10
|
signalling or calling systemsorder telegraphsalarm systems
|
|
2
|
C09K
|
8
|
materials for applications not otherwise provided forapplications of materials not otherwise provide
|
|
3
|
C07C
|
5
|
Acyclic or carbocyclic compounds
|
|
4
|
B82Y
|
5
|
|
|
5
|
C08L
|
3
|
Compositions of macromolecular compounds
|
|
6
|
C07F
|
3
|
acyclic, carbocyclic, or heterocyclic compounds containing elements other than carbon, hydrogen, hal
|
|
7
|
C07D
|
2
|
Heterocyclic compounds
|
|
8
|
G01T
|
2
|
measurement of nuclear or x-radiation
|
|
9
|
B82B
|
2
|
nano-structuresmanufacture or treatment thereof
|
|
10
|
G01J
|
2
|
measurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics o
|
|
11
|
G02B
|
1
|
optical elements, systems, or apparatus
|
|
12
|
C01G
|
1
|
Compounds containing metals not covered by subclasses C01D or C01F
|
|
13
|
C03C
|
1
|
chemical composition of glasses, glazes, or vitreous enamelssurface treatment of glasssurface treatm
|
|
14
|
C01F
|
1
|
compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium
|
|
15
|
G01B
|
1
|
measuring length, thickness, or similar linear dimensionsmeasuring anglesmeasuring areasmeasuring ir
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