Jian DU

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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

Patents Applicationslast 30 patents

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
METHOD FOR CONNECTING A CONNECTION PIECE TO A U-SHAPED RING ANCHOR...
- Publication number 20200001554
- Publication date Jan 2, 2020
- CRRC QINGDAO SIFANG CO., LTD.
- Jian DU
- B61 - RAILWAYS
Information Patent Application
CAR BODY FOR A RAIL VEHICLE
- Publication number 20190389494
- Publication date Dec 26, 2019
- CRRC QINGDAO SIFANG CO., LTD.
- Sansan DING
- B61 - RAILWAYS