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PCE
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DIFF Subgroup
B66B 11/04

Driving gear

Introduced: September 1968

Full Title

Main component parts of lifts in, or associated with, buildings or other structures > Driving gear

CPC subdivides this area 4x more granularly than IPC with 5 additional codes.

5 codes are CPC-only extensions.

Child Classifications

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  • B66B 11/0407 CPC only CPC only
  • B66B 11/0415 CPC only CPC only
  • B66B 11/0423 CPC only CPC only
  • B66B 11/0492 CPC only CPC only
  • B66B 11/06 with hoisting rope or cable positively attached to a winding drum IPC+CPC Available in IPC and CPC
  • B66B 11/08 with hoisting rope or cable operated by frictional engagement with a winding drum or sheave IPC+CPC Available in 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