Dawei RUAN

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Qingdao, Shandong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Combined device having device for connecting cross beam for receivi...
- Patent number 11,505,219
- Issue date Nov 22, 2022
- CRRC Qingdao Sifang Co., Ltd.
- Jianying Liang
- E04 - BUILDING
Information Patent Grant
Crash system for a rail vehicle
- Patent number 11,318,967
- Issue date May 3, 2022
- CRRC Qingdao Sifang Co., Ltd.
- Sansan Ding
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
BOGIE FOR A RAILWAY VEHICLE WITH ROLL STABILISER
- Publication number 20230166777
- Publication date Jun 1, 2023
- CRRC QINGDAO SIFANG CO., LTD.
- Andreas ULBRICHT
- B61 - RAILWAYS
Information Patent Application
CROSS MEMBER FOR RECEIVING PIVOT PINS HAVING A LOAD DISTRIBUTION EL...
- Publication number 20200039539
- Publication date Feb 6, 2020
- CRRC QINGDAO SIFANG CO., LTD.
- Jianying LIANG
- B61 - RAILWAYS
Information Patent Application
CRASH SYSTEM FOR A RAIL VEHICLE
- Publication number 20200001903
- Publication date Jan 2, 2020
- CRRC QINGDAO SIFANG CO., LTD.
- Sansan DING
- B61 - RAILWAYS