Jianfeng WU

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SHANGHAI, CN

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Patents Grantslast 30 patents

Information Patent Grant
System and method for adjustably positioning of elevator guide rail
- Patent number 12,187,579
- Issue date Jan 7, 2025
- Otis Elevator Company
- Gang Huang
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Low cost roped jump lift concept
- Patent number 11,396,442
- Issue date Jul 26, 2022
- Otis Elevator Company
- Jianfeng Wu
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
ELEVATOR TRACTION MACHINE INSTALLATION APPARATUS AND ELEVATOR TRACT...
- Publication number 20240262656
- Publication date Aug 8, 2024
- Otis Elevator Company
- Wenxiang Liu
- B66 - HOISTING LIFTING HAULING
Information Patent Application
SYSTEM AND METHOD FOR ADJUSTABLY POSITIONING OF ELEVATOR GUIDE RAIL
- Publication number 20230112950
- Publication date Apr 13, 2023
- Otis Elevator Company
- Gang Huang
- B66 - HOISTING LIFTING HAULING
Information Patent Application
LOW COST ROPED JUMP LIFT CONCEPT
- Publication number 20210347610
- Publication date Nov 11, 2021
- Otis Elevator Company
- Jianfeng Wu
- B66 - HOISTING LIFTING HAULING
Information Patent Application
A SIDE SPRAY METHOD FOR COOLING THE STEEL STRIP AFTER HOT ROLLING
- Publication number 20210078061
- Publication date Mar 18, 2021
- Baoshan Iron & Steel Co., Ltd
- Jianfeng WU
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...