IPC Subgroup
B66B 17/36 Gates or other apparatus controlling access to, or exit from, cars, cages, or hoistway landings
Introduced: September 1968
Last revised: January 2006
Full Title
Hoistway equipment > Gates or other apparatus controlling access to, or exit from, cars, cages, or hoistway landings
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- HOISTING; LIFTING; HAULING
- Subclass:
- ELEVATORS; ESCALATORS OR MOVING WALKWAYS
Related Keywords
doors and gates controlling ACCESS to lift cages or lift wellsGATES of lift cages or for lift wells
Top Applicants
Top 10 applicants by patent filingsfor 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