Zhixue Li

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Tianjin, CN

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Patents Grantslast 30 patents

Information Patent Grant
Elevator system and supporting column assembly thereof
- Patent number 11,673,774
- Issue date Jun 13, 2023
- Otis Elevator Company
- Zhe Zhang
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
ELEVATOR SYSTEM AND SUPPORTING COLUMN ASSEMBLY THEREOF
- Publication number 20220048737
- Publication date Feb 17, 2022
- Otis Elevator Company
- Zhe Zhang
- B66 - HOISTING LIFTING HAULING
Information Patent Application
CLEANING DEVICE FOR GUIDE RAIL OF ELEVATOR AND CLEANING METHOD THEREOF
- Publication number 20170158463
- Publication date Jun 8, 2017
- Otis Elevator Company
- Fan Jiang
- B08 - CLEANING
Information Patent Application
LIMITING MECHANISM FOR AN ELEVATOR COMPENSATION ROPE TENSIONING PUL...
- Publication number 20170022030
- Publication date Jan 26, 2017
- Otis Elevator Company
- Hebin Bai
- B66 - HOISTING LIFTING HAULING