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CPC Subgroup
H02K 13/04

Connections between commutator segments and windings

Full Title

Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings (supporting or protecting brushes or brush holders in motor casings or enclosures H02K5/14); Disposition of current collectors in motors or generators; Arrangements for improving commutation > Connections between commutator segments and windings

Filing statistics

CPC H02K 13/04 belongs to the parent subclass H02K, which recorded 252,453 patent applications worldwide between 2013 and 2023. Annual filings grew from 14,359 in 2013 to 24,242 in 2023 (+69%), peaking at 29,510 applications in 2020. The most active applicants in class H02 are SGCC(STATE GRID CORPORATION OF CHINA) (24,515 applications), MITSUBISHI ELECTRIC CORPORATION (11,346 applications) and SIEMENS (9,026 applications).

Source: EPO PATSTAT, worldwide filings

2 direct subcodes

Child Classifications

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  • H02K 13/06 Resistive connections, e.g. by high-resistance chokes or by transistors
  • H02K 13/08 Segments formed by extensions of the winding

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