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Heilongjiang, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Railway freight car bogie
Patent number
10,710,613
Issue date
Jul 14, 2020
CRRC QIQIHAR ROLLING STOCK CO., LTD.
Zhenming Liu
B61 - RAILWAYS
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
Bogie and side frame thereof
Patent number
9,216,748
Issue date
Dec 22, 2015
Qiqihar Railway 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
Information
Patent Grant
Freight car bogie and freight car
Patent number
8,336,464
Issue date
Dec 25, 2012
Qiqihar Railway Rolling Stock Co., Ltd.
Shuming Xing
Patents Applications
last 30 patents
Information
Patent Application
RAILWAY FREIGHT CAR BOGIE
Publication number
20190023289
Publication date
Jan 24, 2019
CRRC QIQIHAR ROLLING STOCK CO., LTD.
Zhenming Liu
B61 - RAILWAYS
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
BOGIE AND SIDE FRAME THEREOF
Publication number
20140165871
Publication date
Jun 19, 2014
QIQIHAR RAILWAY ROLLING STOCK CO., LTD
Shifeng Xu
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