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CPC Main Group
H02J 3/00

Circuit arrangements for AC mains or AC distribution networks

19 direct subcodes

Child Classifications

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  • 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 3/10 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 3/26 Arrangements for eliminating or reducing asymmetry in polyphase networks
  • H02J 3/34 Arrangements for transfer of electric power between networks of substantially different frequency

Top Applicants

Top 10 applicants by patent filingsfor class H02, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 24,515
  2. MITSUBISHI ELECTRIC CORPORATION JP 11,346
  3. SIEMENS DE 9,026
  4. ROBERT BOSCH DE 9,005
  5. SAMSUNG ELECTRONICS COMPANY KR 6,729
  6. GUANGDONG POWER GRID CORPORATION 5,740
  7. DENSO CORPORATION JP 5,077
  8. LG ELECTRONICS KR 5,041
  9. LG INNOTEK COMPANY KR 4,442
  10. TOYOTA MOTOR CORPORATION 4,349