Top IPC subclasses
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1
|
C01G
|
7
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Compounds containing metals not covered by subclasses C01D or C01F
|
|
2
|
H01L
|
6
|
Semiconductor devices; electric solid state devices not otherwise provided for
|
|
3
|
C30B
|
5
|
single-crystal growthunidirectional solidification of eutectic material or unidirectional demixing o
|
|
4
|
G01N
|
4
|
Investigating or analysing materials by determining their chemical or physical properties
|
|
5
|
C22C
|
3
|
alloys
|
|
6
|
H01C
|
1
|
resistors
|
|
7
|
C01B
|
1
|
non-metallic elementscompounds thereof
|
|
8
|
H01B
|
1
|
cablesconductorsinsulatorsselection of materials for their conductive, insulating, or dielectric pro
|
|
9
|
G01K
|
1
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measuring temperaturemeasuring quantity of heatthermally-sensitive elements not otherwise provided f
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