Yu Zeng

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Shandong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Train window structure and train with train window structure
- Patent number 11,447,165
- Issue date Sep 20, 2022
- CRRC QINGDAO SIFANG CO., LTD.
- Sansan Ding
- B32 - LAYERED PRODUCTS
Information Patent Grant
Train window structure and train with train window structure
- Patent number 11,186,298
- Issue date Nov 30, 2021
- CRRC Qingdao Sifang Co., Ltd.
- Hong Li
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
Train Window Structure and Train with Train Window Structure
- Publication number 20210284207
- Publication date Sep 16, 2021
- CRRC QINGDAO SIFANG CO., LTD.
- Sansan DING
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
TRAIN WINDOW STRUCTURE AND TRAIN WITH TRAIN WINDOW STRUCTURE
- Publication number 20190202483
- Publication date Jul 4, 2019
- CRRC QINGDAO SIFANG CO., LTD.
- Hong Li
- B61 - RAILWAYS