Xiaojie YU

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Qingdao, Shandong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Alarming and unlocking device
- Patent number 10,464,524
- Issue date Nov 5, 2019
- CRRC QINGDAO SIFANG CO., LTD.
- Bo Chen
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Method and device for transmitting signal among compartments of train
- Patent number 10,207,725
- Issue date Feb 19, 2019
- CRRC QINGDAO SIFANG CO., LTD.
- Miao Wang
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
ALARMING AND UNLOCKING DEVICE
- Publication number 20190023222
- Publication date Jan 24, 2019
- CRRC QINGDAO SIFANG CO., LTD.
- Bo CHEN
- B60 - VEHICLES IN GENERAL
Information Patent Application
METHOD AND DEVICE FOR TRANSMITTING SIGNAL AMONG COMPARTMENTS OF TRAIN
- Publication number 20170057525
- Publication date Mar 2, 2017
- CRRC QINGDAO SIFANG CO., LTD.
- Miao WANG
- B61 - RAILWAYS