by progressive reduction of impedance in secondary circuit

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Arrangements for starting electric motors or dynamo-electric converters > for starting dynamo-electric motors or dynamo-electric converters > for starting an individual polyphase induction motor > by progressive reduction of impedance in secondary circuit

CPC:

Arrangements for starting electric motors or dynamo-electric converters (starting of synchronous motors with electronic commutators H02P6/20, H02P6/22; starting dynamo-electric motors rotating step by step H02P8/04; vector control H02P21/00) > for starting dynamo-electric motors or dynamo-electric converters > for starting an individual polyphase induction motor > by progressive reduction of impedance in secondary circuit

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

Child Classifications

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H02P 1/36 the impedance being a liquid resistance 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