CPC Main Group
H02P 9/00 Arrangements for controlling electric generators for the purpose of obtaining a desired output
Filing statistics
CPC H02P 9/00 belongs to the parent subclass H02P, which recorded 107,088 patent applications worldwide between 2013 and 2023. Annual filings grew from 6,554 in 2013 to 9,861 in 2023 (+50%), peaking at 11,737 applications in 2018. The most active applicants in class H02 are SGCC(STATE GRID CORPORATION OF CHINA) (24,515 applications), MITSUBISHI ELECTRIC CORPORATION (11,346 applications) and SIEMENS (9,026 applications).
Source: EPO PATSTAT, worldwide filings
15 direct subcodes
Child Classifications
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- H02P 9/02 Details
- H02P 9/04 Control effected upon non-electric prime mover and dependent upon electric output value of the generator
- H02P 9/06 Control effected upon clutch or other mechanical power transmission means and dependent upon electric output value of the generator
- H02P 9/08 Control of generator circuit during starting or stopping of driving means, e.g. for initiating excitation
- H02P 9/10 Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P 9/14 by variation of field (H02P9/08, H02P9/10 take precedence)
- H02P 9/40 by variation of reluctance of magnetic circuit of generator
- H02P 9/42 to obtain desired frequency without varying speed of the generator
- H02P 9/44 Control of frequency and voltage in predetermined relation, e.g. constant ratio
- H02P 9/46 Control of asynchronous generator by variation of capacitor
- H02P 9/48 Arrangements for obtaining a constant output value at varying speed of the generator, e.g. on vehicle (H02P9/04 - H02P9/46 take precedence)
Top Applicants
Top 10 applicants by patent filingsfor 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