QUAN LIU

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Patents Grantslast 30 patents

Information Patent Grant
Automatic uncoupling mechanism for couplers
- Patent number 11,072,353
- Issue date Jul 27, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD. X
- Quan Liu
- B61 - RAILWAYS
Information Patent Grant
Locking device and opening and closing mechanism having the same
- Patent number 10,655,381
- Issue date May 19, 2020
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Hui Liu
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Coupler uncoupling control mechanism
- Patent number 10,435,046
- Issue date Oct 8, 2019
- QINGDAO SRI TECHNOLOGY CO., LTD.
- Quan Liu
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
COUPLER UNCOUPLING CONTROL MECHANISM
- Publication number 20190248388
- Publication date Aug 15, 2019
- Quan LIU
- B61 - RAILWAYS
Information Patent Application
AUTOMATIC UNCOUPLING MECHANISM FOR COUPLERS
- Publication number 20190144013
- Publication date May 16, 2019
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- QUAN LIU
- B61 - RAILWAYS
Information Patent Application
LOCKING DEVICE AND OPENING AND CLOSING MECHANISM HAVING THE SAME
- Publication number 20180094473
- Publication date Apr 5, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Hui Liu
- B61 - RAILWAYS
Information Patent Application
OPENING/CLOSING MECHANISM EQUIPPED WITH A SELF-LOCK DEVICE
- Publication number 20160115727
- Publication date Apr 28, 2016
- QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- HUI LIU
- B61 - RAILWAYS