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CPC Subgroup
B66D 3/12

Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable

Full Title

Portable or mobile lifting or hauling appliances > Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable

Filing statistics

CPC B66D 3/12 belongs to the parent subclass B66D, which recorded 19,077 patent applications worldwide between 2013 and 2023. Annual filings grew from 925 in 2013 to 1,759 in 2023 (+90%), peaking at 2,301 applications in 2020. The most active applicants in class B66 are INVENTIO (3,939 applications), OTIS ELEVATOR COMPANY (3,810 applications) and KONE CORPORATION (3,008 applications).

Source: EPO PATSTAT, worldwide filings

2 direct subcodes

Child Classifications

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  • B66D 3/14 lever operated
  • B66D 3/16 operated by an endless chain passing over a pulley or a sprocket

Top Applicants

Top 10 applicants by patent filingsfor 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