CPC Subgroup
B66B 13/16 Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
Full Title
Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings (door fittings, locks E05) > Door or gate operation (of general application E05F) > Control systems or devices > Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
2 direct subcodes
Child Classifications
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- B66B 13/18 without manually-operable devices for completing locking or unlocking of doors
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