IPC Main Group
H02J 1/00 Circuit arrangements for DC mains or DC distribution networks
Introduced: September 1968
Last revised: January 2026
Classification Context
- Section:
- ELECTRICITY
- Class:
- GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
- Subclass:
- ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
Additional Content
Electric propulsion with power supplied within the vehicle Electric circuits specially adapted for vehicles Power supply, e.g. DC power supply, for digital computers
7 direct subcodes
Child Classifications
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- H02J 1/002 using intermediate DC-AC-DC conversion
- H02J 1/02 Arrangements for reducing harmonics or ripples
- H02J 1/04 Current-controlled supply systems, e.g. constant-current supply systems
- H02J 1/06 Two-wire DC power distribution systems
- H02J 1/08 Three-wire DC power distribution systems; Systems having more than three wires
- H02J 1/1 Parallel operation of DC sources
- H02J 1/14 Balancing load and power generation in DC networks
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