CPC Main Group
H02J 3/00 Circuit arrangements for AC mains or AC distribution networks
Filing statistics
CPC H02J 3/00 belongs to the parent subclass H02J, which recorded 413,281 patent applications worldwide between 2013 and 2023. Annual filings grew from 20,350 in 2013 to 53,237 in 2023 (+162%). 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
19 direct subcodes
Child Classifications
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- H02J 3/001 Arrangements for handling faults or abnormalities, e.g. emergencies or contingencies
- H02J 3/007 Arrangements for selectively connecting one or more loads to one or more power sources or power lines
- H02J 3/008 Circuit arrangements for power supply or distribution technologies responsive to energy trading
- H02J 3/01 Arrangements for reducing harmonics or ripples
- H02J 3/02 using a single network for simultaneous distribution of AC power at different frequencies
- H02J 3/04 Arrangements for connecting networks of the same frequency but supplied from different sources
- H02J 3/10 Current-controlled supply systems, e.g. constant-current supply systems
- H02J 3/11 Arrangements for adjusting frequency in AC networks, e.g. by control of active power
- H02J 3/12 Arrangements for adjusting voltage in AC networks by changing a characteristic of the network load
- H02J 3/17 Demand-responsive operation of AC power transmission or distribution networks
- H02J 3/18 Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J 3/26 Arrangements for eliminating or reducing asymmetry in polyphase networks
- H02J 3/28 Arrangements for balancing of the load in networks by storage of energy
- H02J 3/34 Arrangements for transfer of electric power between networks of substantially different frequency
- H02J 3/36 Arrangements for transfer of electric power between AC networks via high-voltage DC [HVDC] links; Arrangements for transfer of electric power between generators and networks via HVDC links
- H02J 3/38 Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
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