QINGDAO SRI TECHNOLOGY CO., LTD.

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QINGDAO, CN

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Patents Grantslast 30 patents

Information Patent Grant
Coupler uncoupling control mechanism
- Patent number 10,435,046
- Issue date Oct 8, 2019
- QINGDAO SRI TECHNOLOGY CO., LTD.
- Quan Liu
- B61 - RAILWAYS
Information Patent Grant
Front suspension system having overload protection
- Patent number 9,919,721
- Issue date Mar 20, 2018
- Qingdao Sifang Rolling Stock Research Institute Co., Ltd.
- Kai Chen
- B61 - RAILWAYS
Information Patent Grant
Vertical spring support device for coupler
- Patent number 9,902,408
- Issue date Feb 27, 2018
- QINGDAO SRI TECHNOLOGY CO., LTD.
- Kai Chen
- B61 - RAILWAYS

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Patents Applicationslast 30 patents

Information Patent Application
LOCOMOTIVE BRAKING CONTROL SYSTEM AND CONTROL METHOD
- Publication number 20220105917
- Publication date Apr 7, 2022
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- XIAO LV
- B60 - VEHICLES IN GENERAL
Information Patent Application
VERTICAL SPRING SUPPORT DEVICE FOR COUPLER
- Publication number 20170334468
- Publication date Nov 23, 2017
- QINGDAO SRI TECHNOLOGY CO., LTD.
- KAI CHEN
- B61 - RAILWAYS
Information Patent Application
COMPACT BUFFER HAVING OVERLOAD PROTECTION
- Publication number 20150008208
- Publication date Jan 8, 2015
- QINGDAO SRI TECHNOLOGY CO., LTD.
- HUI LIU
- B61 - RAILWAYS