Qing Cheng

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Hangzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Safety control device for handrail, conveyor system and safety cont...
- Patent number 11,192,756
- Issue date Dec 7, 2021
- Otis Elevator Company
- Hai Cui
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
CLEANING SYSTEM AND CLEANING METHOD FOR PASSENGER CONVEYOR SYSTEM
- Publication number 20250066162
- Publication date Feb 27, 2025
- Otis Elevator Company
- Qing Cheng
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Application
SYSTEM AND METHOD FOR CLEANING AND DISINFECTING HANDRAIL, ROBOT AND...
- Publication number 20240199382
- Publication date Jun 20, 2024
- Otis Elevator Company
- Qing Cheng
- B08 - CLEANING
Information Patent Application
SAFETY CONTROL DEVICE FOR HANDRAIL, CONVEYOR SYSTEM AND SAFETY CONT...
- Publication number 20210300730
- Publication date Sep 30, 2021
- Otis Elevator Company
- Hai Cui
- B66 - HOISTING LIFTING HAULING