Qiangjun JIANG

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Wuhan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Connecting rod type two-level locking device, hopper car bottom doo...
- Patent number 10,640,133
- Issue date May 5, 2020
- CRRC Yangtze Corporation Limited
- Chunjiang Shi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Two-level locking device, hopper car bottom door and hopper car
- Patent number 9,789,883
- Issue date Oct 17, 2017
- CRRC Yangtze Corporation Limited
- Chunjiang Shi
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
MOVABLE SIDE WALL AND OPENING/CLOSING MECHANISM FOR RAILROAD BOXCARS
- Publication number 20180257673
- Publication date Sep 13, 2018
- CSR YANGZE CO., LTD.
- Donghua XU
- B61 - RAILWAYS
Information Patent Application
CONNECTING ROD TYPE TWO-LEVEL LOCKING DEVICE, HOPPER CAR BOTTOM DOO...
- Publication number 20180072333
- Publication date Mar 15, 2018
- CSR YANGZE CO., LTD.
- Chunjiang SHI
- B61 - RAILWAYS
Information Patent Application
Connecting Rod Type Two-Level Locking Device, Hopper Car Bottom Doo...
- Publication number 20160031454
- Publication date Feb 4, 2016
- Chunjiang SHI
- B61 - RAILWAYS
Information Patent Application
Two-Level Locking Device, Hopper Car Bottom Door and Hopper Car
- Publication number 20150353102
- Publication date Dec 10, 2015
- CSR YANGZE CO., LTD.
- Chunjiang SHI
- B61 - RAILWAYS