DIFF Main Group
B66C 15/00 Safety gear (for rope, cable, or chain winding mechanisms B66D1/54)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Safety gear
CPC: Safety gear (for rope, cable, or chain winding mechanisms B66D1/54)
Full Title
Full titles differ between systems:
IPC:
Safety gear
CPC:
Safety gear (for rope, cable, or chain winding mechanisms B66D1/54)
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
Child Classifications
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- B66C 15/02 for retaining load-engaging elements in the event of rope or cable breakage IPC+CPC Available in IPC and CPC
- B66C 15/04 for preventing collisions, e.g. between cranes or trolleys operating on the same track +1 CPC IPC+CPC Available in IPC and CPC
- B66C 15/06 Arrangements or use of warning devices since 1974 +1 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B66,2013–2023, worldwide · Source: EPO PATSTAT
- INVENTIO CH 3,843
- OTIS ELEVATOR COMPANY US 3,709
- SGCC(STATE GRID CORPORATION OF CHINA) 2,987
- KONE CORPORATION FI 2,922
- TOSHIBA ELEVATOR COMPANY 2,922
- HITACHI 2,321
- MITSUBISHI ELECTRIC CORPORATION JP 2,287
- MITSUBISHI ELECTRIC CORPORATION 1,870
- HITACHI BUILDING SYSTEMS COMPANY 1,700
- ANHUI HELI COMPANY 1,325
Top Applicants (CPC)
Class B66,2013–2023, worldwide · Source: EPO PATSTAT
- INVENTIO CH 3,939
- OTIS ELEVATOR COMPANY US 3,810
- KONE CORPORATION FI 3,008
- MITSUBISHI ELECTRIC CORPORATION JP 2,333
- MITSUBISHI ELECTRIC CORPORATION 1,254
- HITACHI 1,195
- OTIS ELEVATOR COMPANY 1,065
- SGCC(STATE GRID CORPORATION OF CHINA) 961
- INVENTIO 828
- CROWN EQUIPMENT CORPORATION US 828