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Qiqihar, CN
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Patents Grants
last 30 patents
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
Journal box rubber pad and bogie
Patent number
8,561,548
Issue date
Oct 22, 2013
Qiqihar Railway Rolling Stock Co., Ltd.
Zhenming Liu
B61 - RAILWAYS
Information
Patent Grant
Freight car bogie and freight car
Patent number
8,448,580
Issue date
May 28, 2013
Qiqihar Railway Rolling Stock Co., Ltd.
Zhenming Liu
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
JOURNAL BOX RUBBER PAD AND BOGIE
Publication number
20130008338
Publication date
Jan 10, 2013
QIQIHAR RAILWAY ROLLING STOCK CO., LTD
ZHENMING LIU
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
Information
Patent Application
FREIGHT CAR BOGIE AND FREIGHT CAR
Publication number
20110247520
Publication date
Oct 13, 2011
DALIAN QICHE RAILWAY ROLLING STOCK CO., LTD
ZHENMING LIU
B61 - RAILWAYS