IPC Subgroup
H02J 3/18 Arrangements for adjusting, eliminating or compensating reactive power in networks
Introduced: September 1968
Last revised: January 2026
Full Title
Circuit arrangements for AC mains or AC distribution networks > Arrangements for adjusting, eliminating or compensating reactive power in networks
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
Arrangements for adjusting voltage in AC networks by changing a characteristic of the network load by adjustment of reactive power
5 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- H02J 3/1807 using series compensators, e.g. thyristor-controlled series capacitors [TCSC]
- H02J 3/1821 using shunt compensators
- H02J 3/1878 using tap changing or phase shifting transformers
- H02J 3/1885 using rotating AC generators, e.g. synchronous generators
- H02J 3/1892 the arrangements being an integral part of the loads or of their control circuits
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