DIFF Subgroup
G05D 13/34 with auxiliary non-electric power
Introduced: September 1968
Full Title
Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover > with auxiliary non-electric power
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
4 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G05D 13/36 using regulating devices with proportional band, i.e. P regulating devices IPC+CPC Available in IPC and CPC
- G05D 13/46 using regulating devices with proportional band and integral action, i.e. PI regulating devices IPC+CPC Available in IPC and CPC
- G05D 13/52 using regulating devices with proportional band and derivative action, i.e. PD regulating devices IPC+CPC Available in IPC and CPC
- G05D 13/60 using regulating devices with proportional band, derivative and integral action, i.e. PID regulating devices 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