ChunYan Yu

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Hangzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Openable extensible panel and elevator ceiling, car and system with...
- Patent number 10,618,778
- Issue date Apr 14, 2020
- Otis Elevator Company
- Xiaopeng Hu
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Rust removing device for elevator guide rail
- Patent number 10,246,297
- Issue date Apr 2, 2019
- Otis Elevator Company
- YuHang Ou
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
OPENABLE EXTENSIBLE PANEL AND ELEVATOR CEILING, CAR AND SYSTEM WITH...
- Publication number 20180162698
- Publication date Jun 14, 2018
- Otis Elevator Company
- Xiaopeng Hu
- B66 - HOISTING LIFTING HAULING
Information Patent Application
RUST REMOVING DEVICE FOR ELEVATOR GUIDE RAIL
- Publication number 20160325967
- Publication date Nov 10, 2016
- Otis Elevator Company
- YuHang Ou
- B66 - HOISTING LIFTING HAULING