H02J ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
Description
H02J covers circuit arrangements, control systems, and network configurations for electric power supply, distribution, and storage across generation, transmission, and utilization stages. This subclass encompasses load management, power flow control, grid synchronization, energy storage systems, and integration of renewable or distributed energy sources into electrical networks. Typical technologies include smart grids, microgrids, demand-side management, uninterruptible power supplies, and battery or supercapacitor storage systems. Related generation or conversion technologies (H02K, H02M) and user equipment designs are classified separately.
Filing statistics
CPC subclass H02J 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
14 direct subcodes
Child Classifications
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- H02J 1/00 Circuit arrangements for DC mains or DC distribution networks
- H02J 11/00 Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
- H02J 13/00 Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network
- H02J 15/00 Systems for storing electric energy specially adapted for power networks
- H02J 2101/00 Supply or distribution of decentralised, dispersed or local electric power generation
- H02J 2103/00 Details of circuit arrangements for mains or AC distribution networks
- H02J 2105/00 Networks for supplying or distributing electric power characterised by their spatial reach or by the load
- H02J 2107/00 Circuit arrangements for communication specially adapted for monitoring, managing or controlling operation of power networks remotely
- H02J 2207/00 Details of circuit arrangements for charging or discharging batteries or supplying loads from batteries
- H02J 3/00 Circuit arrangements for AC mains or AC distribution networks
- H02J 4/00 Circuit arrangements for mains or distribution networks not specified as AC or DC; Circuit arrangements for mains or distribution networks combining AC and DC sections or sub-networks (arrangements using intermediate DC-AC-DC conversion H02J1/002; arrangements using high-voltage DC [HVDC] links H02J3/36)
- H02J 50/00 Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J 7/00 Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J 9/00 Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
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