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B66C 13/50

Applications of limit circuits or of limit-switch arrangements (for winding mechanisms B66D1/56)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Applications of limit circuits or of limit-switch arrangements

CPC: Applications of limit circuits or of limit-switch arrangements (for winding mechanisms B66D1/56)

Full Title

Full titles differ between systems:

IPC:

Other constructional features or details > Control systems or devices > Applications of limit circuits or of limit-switch arrangements

CPC:

Other constructional features or details > Control systems or devices (exclusively for rope, cable, or chain winding mechanisms B66D1/40) > Applications of limit circuits or of limit-switch arrangements (for winding mechanisms B66D1/56)

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

Top Applicants

Top Applicants (IPC)

Class B66,2013–2023, worldwide · Source: EPO PATSTAT

  1. INVENTIO CH 3,843
  2. OTIS ELEVATOR COMPANY US 3,709
  3. SGCC(STATE GRID CORPORATION OF CHINA) 2,987
  4. KONE CORPORATION FI 2,922
  5. TOSHIBA ELEVATOR COMPANY 2,922
  6. HITACHI 2,321
  7. MITSUBISHI ELECTRIC CORPORATION JP 2,287
  8. MITSUBISHI ELECTRIC CORPORATION 1,870
  9. HITACHI BUILDING SYSTEMS COMPANY 1,700
  10. ANHUI HELI COMPANY 1,325

Top Applicants (CPC)

Class B66,2013–2023, worldwide · Source: EPO PATSTAT

  1. INVENTIO CH 3,939
  2. OTIS ELEVATOR COMPANY US 3,810
  3. KONE CORPORATION FI 3,008
  4. MITSUBISHI ELECTRIC CORPORATION JP 2,333
  5. MITSUBISHI ELECTRIC CORPORATION 1,254
  6. HITACHI 1,195
  7. OTIS ELEVATOR COMPANY 1,065
  8. SGCC(STATE GRID CORPORATION OF CHINA) 961
  9. INVENTIO 828
  10. CROWN EQUIPMENT CORPORATION US 828