Top IPC subclasses
1
|
C01G
|
2
|
Compounds containing metals not covered by subclasses C01D or C01F
|
2
|
H01C
|
1
|
resistors
|
3
|
C01B
|
1
|
non-metallic elementscompounds thereof
|
4
|
C30B
|
1
|
single-crystal growthunidirectional solidification of eutectic material or unidirectional demixing o
|
5
|
C01F
|
1
|
compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium
|
6
|
G01K
|
1
|
measuring temperaturemeasuring quantity of heatthermally-sensitive elements not otherwise provided f
|