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CPC Subgroup
H02J 7/16

Regulation of the charging current or voltage by variation of field

Full Title

Circuit arrangements for charging or discharging batteries or for supplying loads from batteries > for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle > Regulation of the charging current or voltage by variation of field

8 direct subcodes

Child Classifications

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  • H02J 7/18 due to variation of ohmic resistance in field circuit, using resistance switching in or out of circuit step by step
  • H02J 7/20 due to variation of continuously variable ohmic resistor
  • H02J 7/26 using magnetic devices with controllable degree of saturation
  • H02J 7/28 using magnetic devices with controllable degree of saturation in combination with controlled discharge tube or controlled semiconductor device
  • H02J 7/30 using armature-reaction-excited machines

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