Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method and apparatus to prevent or minimize the entrapment of passengers in elevators during a power failure

Method and apparatus to prevent or minimize the entrapment of passengers in elevators during a power failure

US Patent 7540356 · Granted Jun 2, 2009

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Photoresist stripper2022
Photoresist stripper2022
Floating liquefied natural gas pretreatment system2022
Floating liquefied natural gas pretreatment system2022
Photoresist stripping composition and method2021
Photoresist stripper2021
Process design for acid gas removal2019
Aqueous solution and process for removing substances from substrates2018
Elevator dampener and energy harvesting device and method2018
Apparatus and method for dampening oscillations of an elevator car2018
Elevator system2018
Floating liquefied natural gas pretreatment system2017