Enwel Zhang

Follow

Person

Beijing, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Video-based system and method of elevator door detection
- Patent number 8,660,700
- Issue date Feb 25, 2014
- Otis Elevator Company
- Zhen Jia
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
VIDEO-BASED SYSTEM AND METHOD OF ELEVATOR DOOR DETECTION
- Publication number 20110202178
- Publication date Aug 18, 2011
- Otis Elevator Company
- Jia Zhen
- B66 - HOISTING LIFTING HAULING