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Zhenyan Tong
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Shanghai, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Clamping device and elevator system
Patent number
11,884,515
Issue date
Jan 30, 2024
Otis Elevator Company
Qirui Wang
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Force application assembly, elevator and method of elevator rescue
Patent number
11,702,317
Issue date
Jul 18, 2023
Otis Elevator Company
Yunkang Shi
B66 - HOISTING LIFTING HAULING
Patents Applications
last 30 patents
Information
Patent Application
ELEVATOR SYSTEM
Publication number
20220332543
Publication date
Oct 20, 2022
Otis Elevator Company
Wei Wang
B66 - HOISTING LIFTING HAULING
Information
Patent Application
CLAMPING DEVICE AND ELEVATOR SYSTEM
Publication number
20220324677
Publication date
Oct 13, 2022
Otis Elevator Company
Qirui Wang
B66 - HOISTING LIFTING HAULING
Information
Patent Application
LEVELING DEVICE OF A PIT, LEVELING METHOD AND ELEVATOR SYSTEM
Publication number
20220185624
Publication date
Jun 16, 2022
Otis Elevator Company
Zhenyan Tong
B66 - HOISTING LIFTING HAULING
Information
Patent Application
FORCE APPLICATION ASSEMBLY, ELEVATOR AND METHOD OF ELEVATOR RESCUE
Publication number
20220169481
Publication date
Jun 2, 2022
Otis Elevator Company
Yunkang Shi
B66 - HOISTING LIFTING HAULING