Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: ELECTRICITY
Class:: GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
Subclass:: EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS

Filing statistics

IPC H02H 7/00 belongs to the parent subclass H02H, which recorded 123,243 patent applications worldwide between 2013 and 2023. Annual filings grew from 8,840 in 2013 to 13,605 in 2023 (+54%). The most active applicants in class H02 are SGCC(STATE GRID CORPORATION OF CHINA) (54,496 applications), MITSUBISHI ELECTRIC CORPORATION (10,495 applications) and TOYOTA MOTOR CORPORATION (9,464 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

emergency protection of circuits for DYNAMO-ELECTRIC machines

10 direct subcodes

Child Classifications

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H02H 7/04 for transformers
H02H 7/06 for dynamo-electric generators; for synchronous capacitors
H02H 7/08 for dynamo-electric motors
H02H 7/1 for converters; for rectifiers
H02H 7/16 for capacitors
H02H 7/18 for batteries; for accumulators
H02H 7/2 for electronic equipment
H02H 7/22 for distribution gear, e.g. bus-bar systems; for switching devices
H02H 7/24 for spark-gap arresters
H02H 7/26 Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred

Top Applicants

Top 10 applicants by patent filingsfor 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