Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture

Introduced: September 1968

Of 12 combined children, 10 exist in both systems.

2 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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H01G 9/0003 CPC only CPC only
H01G 9/0029 +2 CPC CPC only CPC only
H01G 9/004 Details since 1995 IPC+CPC Available in IPC and CPC
H01G 9/145 Liquid electrolytic capacitors (H01G11/00 takes precedence) since 1995 IPC+CPC Available in IPC and CPC
H01G 9/15 Solid electrolytic capacitors (H01G11/00 takes precedence) since 1995 +2 CPC IPC+CPC Available in IPC and CPC
H01G 9/16 specially for use as rectifiers or detectors (H01G9/22 takes precedence) IPC+CPC Available in IPC and CPC
H01G 9/18 Self-interrupters IPC+CPC Available in IPC and CPC
H01G 9/20 Light-sensitive devices +10 CPC IPC+CPC Available in IPC and CPC
H01G 9/21 Temperature-sensitive devices since 1995 IPC+CPC Available in IPC and CPC
H01G 9/22 Devices using combined reduction and oxidation, e.g. redox arrangement or solion IPC+CPC Available in IPC and CPC
H01G 9/26 Structural combinations of electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices with each other since 1995 IPC+CPC Available in IPC and CPC
H01G 9/28 Structural combinations of electrolytic capacitors, rectifiers, detectors, switching devices with other electric components not covered by this subclass since 1995 IPC+CPC Available in IPC and CPC