Top IPC subclasses
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1
|
G08B
|
5
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signalling or calling systemsorder telegraphsalarm systems
|
|
2
|
C09K
|
3
|
materials for applications not otherwise provided forapplications of materials not otherwise provide
|
|
3
|
C07D
|
2
|
Heterocyclic compounds
|
|
4
|
C07C
|
2
|
Acyclic or carbocyclic compounds
|
|
5
|
C08L
|
2
|
Compositions of macromolecular compounds
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|
6
|
C07F
|
2
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acyclic, carbocyclic, or heterocyclic compounds containing elements other than carbon, hydrogen, hal
|
|
7
|
B82Y
|
2
|
|
|
8
|
B82B
|
1
|
nano-structuresmanufacture or treatment thereof
|
|
9
|
C01F
|
1
|
compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium
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