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IPC Subgroup
B66D 1/6

adapted for special purposes

Introduced: September 1968

Last revised: January 2006

Full Title

Rope, cable, or chain winding mechanisms; Capstans > adapted for special purposes

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
HOISTING; LIFTING; HAULING
Subclass:
CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS

5 direct subcodes

Child Classifications

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Top Applicants

Top 10 applicants by patent filingsfor 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