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DIFF Subgroup
H02J 1/108

having arrangements for blocking reverse current flow, e.g. using diodes (H02J1/12 takes precedence)

Introduced: January 2026

Title

Titles differ between systems:

IPC: having arrangements for blocking reverse current flow, e.g. using diodes

CPC: having arrangements for blocking reverse current flow, e.g. using diodes (H02J1/12 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Circuit arrangements for DC mains or DC distribution networks > Parallel operation of DC sources > having arrangements for blocking reverse current flow, e.g. using diodes

CPC:

Circuit arrangements for DC mains or DC distribution networks > Parallel operation of DC sources > having arrangements for blocking reverse current flow, e.g. using diodes (H02J1/12 takes precedence)

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

Class H02,2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 54,496
  2. MITSUBISHI ELECTRIC CORPORATION JP 10,495
  3. TOYOTA MOTOR CORPORATION 9,464
  4. GUANGDONG POWER GRID CORPORATION 9,339
  5. ROBERT BOSCH DE 8,226
  6. SIEMENS DE 8,218
  7. DENSO CORPORATION 7,063
  8. MITSUBISHI ELECTRIC CORPORATION 6,619
  9. SAMSUNG ELECTRONICS COMPANY KR 5,826
  10. GREE ELECTRIC APPLIANCES 5,094

Top Applicants (CPC)

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