G05F 1/56 using semiconductor devices in series with the load as final control devices (G05F1/461 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: using semiconductor devices in series with the load as final control devices
CPC: using semiconductor devices in series with the load as final control devices (G05F1/461 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 > using semiconductor devices in series with the load as final control devices
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) > using semiconductor devices in series with the load as final control devices (G05F1/461 takes precedence)
Of 7 combined children, 5 exist in both systems.
2 codes are CPC-only extensions.
2 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1985.
Child Classifications
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- G05F 1/563 including two stages of regulation at least one of which is output level responsive, e.g. coarse and fine regulation since 1985 IPC+CPC Available in IPC and CPC
- G05F 1/565 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor (G05F1/563 takes precedence) since 1985 IPC+CPC Available in IPC and CPC
- G05F 1/59 including plural semiconductor devices as final control devices for a single load 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