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IPC Subgroup
H01R 39/46

Auxiliary means for improving current transfer, or for reducing or preventing sparking or arcing

Introduced: September 1968

Last revised: January 2006

Full Title

Rotary current collectors, distributors or interrupters > Details > Auxiliary means for improving current transfer, or for reducing or preventing sparking or arcing

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC ELEMENTS
Subclass:
ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS

Related Keywords

preventing arcing in electric current collectors

4 direct subcodes

Child Classifications

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  • H01R 39/48 by air blast; by surrounding collector with non-conducting liquid or gas
  • H01R 39/5 Barriers placed between brushes
  • H01R 39/52 by use of magnets
  • H01R 39/54 by use of impedance between brushes or segments

Top Applicants

Top 10 applicants by patent filingsfor class H01, 2013–2023, worldwide · Source: EPO PATSTAT

  1. TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 43,574
  2. SAMSUNG ELECTRONICS COMPANY KR 42,206
  3. LG CHEM KR 21,383
  4. APPLIED MATERIALS US 20,441
  5. LG ENERGY SOLUTION KR 20,279
  6. SAMSUNG DISPLAY KR 19,725
  7. CHINESE ACADEMY OF SCIENCES 19,400
  8. TOYOTA MOTOR CORPORATION 18,819
  9. SGCC(STATE GRID CORPORATION OF CHINA) 18,082
  10. TOKYO ELECTRON JP 17,634