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DIFF Subgroup
B66C 13/10

for preventing cable slack (control devices for rope, cable, or chain winding mechanisms, e.g. for controlling tensions, B66D1/40)

Introduced: September 1968

Title

Titles differ between systems:

IPC: for preventing cable slack

CPC: for preventing cable slack (control devices for rope, cable, or chain winding mechanisms, e.g. for controlling tensions, B66D1/40)

Full Title

Full titles differ between systems:

IPC:

Other constructional features or details > Auxiliary devices for controlling movements of suspended loads, or for preventing cable slack > for preventing cable slack

CPC:

Other constructional features or details > Auxiliary devices for controlling movements of suspended loads, or preventing cable slack > for preventing cable slack (control devices for rope, cable, or chain winding mechanisms, e.g. for controlling tensions, B66D1/40)

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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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