DERONG ZHANG

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Qiqihar, CN

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Patents Grantslast 30 patents

Information Patent Grant
Swing bolster, swing bolster vibration reduction assembly and bogie
- Patent number 10,144,437
- Issue date Dec 4, 2018
- CRR Qigihar Co., Ltd. Dalian Research & Development Center
- Pinwei Yin
- B61 - RAILWAYS
Information Patent Grant
Bogie and axle box suspension positioning device thereof
- Patent number 10,086,851
- Issue date Oct 2, 2018
- CRRC Qiqihar Rolling Stock Co., Ltd.
- Shifeng Xu
- B61 - RAILWAYS
Information Patent Grant
Central suspension device, wagon bogie and express railway wagon
- Patent number 8,671,845
- Issue date Mar 18, 2014
- Qiqihar Railway Rolling Stock Co., Ltd.
- Shifeng Xu
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
BOGIE AND AXLE BOX SUSPENSION POSITIONING DEVICE THEREOF
- Publication number 20150367867
- Publication date Dec 24, 2015
- Qiqihar Railway Rolling Stock Co., Ltd. Dalian R&D Centre
- Shifeng XU
- B61 - RAILWAYS
Information Patent Application
Swing Bolster, Swing Bolster Vibration Reduction Assembly and Bogie
- Publication number 20150367866
- Publication date Dec 24, 2015
- Qiqihar Railway Rolling Stock Co., Ltd. Dalian R&D Centre
- Pinwei YIN
- B61 - RAILWAYS
Information Patent Application
CENTRAL SUSPENSION DEVICE, WAGON BOGIE AND EXPRESS RAILWAY WAGON
- Publication number 20120318165
- Publication date Dec 20, 2012
- QIQIHAR RAILWAY ROLLING STOCK CO., LTD.
- SHIFENG XU
- B61 - RAILWAYS