G05F 1/46 wherein the variable actually regulated by the final control device is DC (G05F1/625 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: wherein the variable actually regulated by the final control device is DC
CPC: wherein the variable actually regulated by the final control device is DC (G05F1/625 takes precedence)
Full Title
Full titles differ between systems:
Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems > Regulating voltage or current > wherein the variable actually regulated by the final control device is DC
Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems > Regulating voltage or current (G05F1/02 takes precedence) > wherein the variable actually regulated by the final control device is DC (G05F1/625 takes precedence)
Of 9 combined children, 6 exist in both systems.
3 codes are CPC-only extensions.
3 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G05F 1/52 using discharge tubes in series with the load as final control devices IPC+CPC Available in IPC and CPC
- G05F 1/56 using semiconductor devices in series with the load as final control devices (G05F1/461 takes precedence) +2 CPC IPC+CPC Available in IPC and CPC
- G05F 1/607 using discharge tubes in parallel with the load as final control devices since 1980 IPC+CPC Available in IPC and CPC
- G05F 1/613 using semiconductor devices in parallel with the load as final control devices (G05F1/461 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
- G05F 1/618 using semiconductor devices in series and in parallel with the load as final control devices (G05F1/461 takes precedence) since 1985 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class G05,2013–2023, worldwide · Source: EPO PATSTAT
- SIEMENS DE 4,725
- SGCC(STATE GRID CORPORATION OF CHINA) 4,571
- FANUC JP 4,233
- MITSUBISHI ELECTRIC CORPORATION JP 3,143
- FANUC 2,981
- ROBERT BOSCH DE 2,813
- CHINESE ACADEMY OF SCIENCES 2,500
- LG ELECTRONICS KR 2,182
- OMRON CORPORATION JP 2,036
- SAMSUNG ELECTRONICS COMPANY KR 1,981
Top Applicants (CPC)
Class G05,2013–2023, worldwide · Source: EPO PATSTAT
- FANUC JP 6,367
- SIEMENS DE 5,963
- FANUC 4,535
- MITSUBISHI ELECTRIC CORPORATION JP 4,201
- ROBERT BOSCH DE 4,010
- LG ELECTRONICS KR 3,802
- SAMSUNG ELECTRONICS COMPANY KR 3,143
- FORD GLOBAL TECHNOLOGIES US 2,889
- TOYOTA MOTOR CORPORATION 2,778
- OMRON CORPORATION JP 2,743