Inventor · disambiguated record
Lifei Cheng
Also filed as: CHENG LIFEI
5 granted patents·7 pending applications·0 citations·filing 2019–2025
58Inventor score
Files withOTIS ELEVATOR CO12
Top patents by PatentIndex Score
12 records- 0173US12122640B2Heating control device and method for escalator system or moving sidewalk systemOTIS ELEVATOR CO·Filed 2022·Granted Oct 22, 2024·0 cites·18 claims
- 0269US11764716B1Determination of operation mode for AC asynchronous three-phrase motor in escalator systemOTIS ELEVATOR CO·Filed 2022·Granted Sep 19, 2023·0 cites·22 claims
- 0368US2025206574A1Method for controlling a conveyor, controlling device, and conveyorOTIS ELEVATOR CO·Filed 2024·Application pending·0 cites
- 0466US11993486B2Apparatus and method for controlling passenger transportation deviceOTIS ELEVATOR CO·Filed 2022·Granted May 28, 2024·0 cites·18 claims
- 0565US2024367944A1Automatic conveying device and maintenance method thereforOTIS ELEVATOR CO·Filed 2023·Application pending·0 cites
- 0664US2025033934A1Brake system for a conveyor system, method for detecting a brake of a conveyor system, and controllerOTIS ELEVATOR CO·Filed 2024·Application pending·0 cites
- 0764US2025376355A1Safety detection device and escalator or moving walkway incorporating the deviceOTIS ELEVATOR CO·Filed 2025·Application pending·0 cites
- 0862US2024253951A1Apparatus and method for controlling an escalator system or an automated walkway systemOTIS ELEVATOR CO·Filed 2023·Application pending·0 cites
- 0961US11078050B2Speed detection device and passenger conveyer deviceOTIS ELEVATOR CO·Filed 2019·Granted Aug 3, 2021·0 cites·22 claims
- 1060US10865074B2Handrail automatically tensioning system and a method for adjusting tension level of handrailOTIS ELEVATOR CO·Filed 2019·Granted Dec 15, 2020·0 cites·20 claims
- 1159US2024417221A1Automatic conveying device, method for determining the presence of external objects, and automatic start methodOTIS ELEVATOR CO·Filed 2023·Application pending·0 cites
- 1250US2025145417A1Control method for a conveyor, corresponding control system, control node, and control endOTIS ELEVATOR CO·Filed 2024·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →