Top IPC subclasses
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1
|
C30B
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4
|
single-crystal growthunidirectional solidification of eutectic material or unidirectional demixing o
|
|
2
|
C01G
|
3
|
Compounds containing metals not covered by subclasses C01D or C01F
|
|
3
|
H01L
|
3
|
Semiconductor devices; electric solid state devices not otherwise provided for
|
|
4
|
C04B
|
3
|
Lime; magnesia; slag; cements; compositions thereof, e.g. mortars, concrete or like building materials; artificial stone; ceramics; refractories; treatment of natural stone
|
|
5
|
A01C
|
2
|
Planting; sowing; fertilising
|
|
6
|
B82B
|
1
|
nano-structuresmanufacture or treatment thereof
|
|
7
|
H05B
|
1
|
electric heatingelectric lighting not otherwise provided for
|
|
8
|
A01P
|
1
|
Biocidal, pest repellant, pest attractant or plant growth regulatory activity of chemical compounds or preparations
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