Zhengyu SONG

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Qingdao, Shandong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Roof segments for the roof of a carriage body
- Patent number 11,370,463
- Issue date Jun 28, 2022
- CRRC Qingdao Sifang Co., Ltd.
- Shaoqing Liu
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
ROOF SEGMENTS FOR THE ROOF OF A CARRIAGE BODY
- Publication number 20210331718
- Publication date Oct 28, 2021
- CRRC QINGDAO SIFANG CO., LTD.
- Shaoqing LIU
- B61 - RAILWAYS
Information Patent Application
CONNECTING ELEMENT FOR ATTACHING A COMPONENT TO A FIBER COMPOSITE S...
- Publication number 20200001904
- Publication date Jan 2, 2020
- CRRC QINGDAO SIFANG CO., LTD.
- Yunshuang MA
- B61 - RAILWAYS