Lifeng Zhang

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Safety device, elevator safety system and elevator system
- Patent number 11,235,949
- Issue date Feb 1, 2022
- Otis Elevator Company
- Lifeng Zhang
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Safety device for elevators
- Patent number 10,407,278
- Issue date Sep 10, 2019
- Otis Elevator Company
- Lifeng Zhang
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
SAFETY DEVICE, ELEVATOR SAFETY SYSTEM AND ELEVATOR SYSTEM
- Publication number 20190023532
- Publication date Jan 24, 2019
- Otis Elevator Company
- Lifeng Zhang
- B66 - HOISTING LIFTING HAULING
Information Patent Application
SAFETY DEVICE FOR ELEVATORS
- Publication number 20170066628
- Publication date Mar 9, 2017
- Otis Elevator Company
- Lifeng Zhang
- B66 - HOISTING LIFTING HAULING