Top IPC subclasses
1
|
H01B
|
4
|
cablesconductorsinsulatorsselection of materials for their conductive, insulating, or dielectric pro
|
2
|
G01R
|
3
|
Measuring electric variables; measuring magnetic variables
|
3
|
H01L
|
3
|
Semiconductor devices; electric solid state devices not otherwise provided for
|
4
|
C22C
|
2
|
alloys
|
5
|
C01G
|
2
|
Compounds containing metals not covered by subclasses C01D or C01F
|
6
|
G01K
|
1
|
measuring temperaturemeasuring quantity of heatthermally-sensitive elements not otherwise provided f
|