DIFF Subgroup
H02P 25/16 characterised by the circuit arrangement or by the kind of wiring
Introduced: January 2006
Full Title
Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details > characterised by the circuit arrangement or by the kind of wiring
IPC and CPC are identically structured here. All 6 subcodes exist in both systems.
IPC defines codes here since 2006.
Child Classifications
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- H02P 25/18 with arrangements for switching the windings, e.g. with mechanical switches or relays since 2006 +4 CPC IPC+CPC Available in IPC and CPC
- H02P 25/22 Multiple windings; Windings for more than three phases since 2006 IPC+CPC Available in IPC and CPC
- H02P 25/24 Variable impedance in stator or rotor circuit since 2006 IPC+CPC Available in IPC and CPC
- H02P 25/28 using magnetic devices with controllable degree of saturation, e.g. transductors since 2006 IPC+CPC Available in IPC and CPC
- H02P 25/30 the motor being controlled by a control effected upon an AC generator supplying it since 2006 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class H02,2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 54,496
- MITSUBISHI ELECTRIC CORPORATION JP 10,495
- TOYOTA MOTOR CORPORATION 9,464
- GUANGDONG POWER GRID CORPORATION 9,339
- ROBERT BOSCH DE 8,226
- SIEMENS DE 8,218
- DENSO CORPORATION 7,063
- MITSUBISHI ELECTRIC CORPORATION 6,619
- SAMSUNG ELECTRONICS COMPANY KR 5,826
- GREE ELECTRIC APPLIANCES 5,094
Top Applicants (CPC)
Class H02,2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 24,515
- MITSUBISHI ELECTRIC CORPORATION JP 11,346
- SIEMENS DE 9,026
- ROBERT BOSCH DE 9,005
- SAMSUNG ELECTRONICS COMPANY KR 6,729
- GUANGDONG POWER GRID CORPORATION 5,740
- DENSO CORPORATION JP 5,077
- LG ELECTRONICS KR 5,041
- LG INNOTEK COMPANY KR 4,442
- TOYOTA MOTOR CORPORATION 4,349