CPC Main Group
B66B 13/00 Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings (door fittings, locks E05)
4 direct subcodes
Child Classifications
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- B66B 13/02 Door or gate operation (of general application E05F)
- B66B 13/22 Operation of door or gate contacts
- B66B 13/24 Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
- B66B 13/30 Constructional features of doors or gates (of interest apart from this application E06B)
Top Applicants
Top 10 applicants by patent filingsfor 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