Lei Yu

Follow

Person

Qiqihar City, Heilongjiang, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Wagon and vehicle body assembly thereof
- Patent number 10,689,011
- Issue date Jun 23, 2020
- CRRC Qiqihar Rolling Stock Co., Ltd.
- Baichuan He
- B61 - RAILWAYS
Information Patent Grant
Compartment and bottom door thereof
- Patent number 10,352,083
- Issue date Jul 16, 2019
- CRRC Qiqihar Rolling Stock Co., Ltd.
- Lei Yu
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Bottom door device and hopper car having the same
- Patent number 9,061,688
- Issue date Jun 23, 2015
- Qiqihar Railway Rolling Stock Co., Ltd.
- Linghan Yue
- B61 - RAILWAYS
Information Patent Grant
Bottom door opening-closing mechanism, bottom door device and drop-...
- Patent number 8,939,088
- Issue date Jan 27, 2015
- Qiqihar Railway Rolling Stock Co., Ltd.
- Linghan Yue
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
WAGON AND VEHICLE BODY ASSEMBLY THEREOF
- Publication number 20180001904
- Publication date Jan 4, 2018
- CRRC QIQIHAR ROLLING STOCK CO., LTD.
- Baichuan HE
- B61 - RAILWAYS
Information Patent Application
COMPARTMENT AND BOTTOM DOOR THEREOF
- Publication number 20170107751
- Publication date Apr 20, 2017
- CRRC QIQIHAR Rolling Stock CO., LTD.
- Lei Yu
- B61 - RAILWAYS
Information Patent Application
BOTTOM DOOR DEVICE AND HOPPER CAR HAVING THE SAME
- Publication number 20140224148
- Publication date Aug 14, 2014
- QIQIHAR RAILWAY ROLLING STOCK CO., LTD.
- Linghan Yue
- B61 - RAILWAYS
Information Patent Application
BOTTOM DOOR OPENING-CLOSING MECHANISM, BOTTOM DOOR DEVICE AND DROP-...
- Publication number 20140216299
- Publication date Aug 7, 2014
- QIQIHAR RAILWAY ROLLING STOCK CO., LTD.
- Linghan Yue
- B61 - RAILWAYS