Chao MA

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Qingdao, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for monitoring rail vehicle
- Patent number 11,609,560
- Issue date Mar 21, 2023
- CRRC QINGDAO SIFANG CO., LTD.
- Junyan Wang
- G05 - CONTROLLING REGULATING
Information Patent Grant
Multi-network convergence method and device
- Patent number 10,939,263
- Issue date Mar 2, 2021
- CRRC QINGDAO SIFANG CO., LTD.
- Fengchao Wang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Method And System For Monitoring Rail Vehicle
- Publication number 20210286350
- Publication date Sep 16, 2021
- CRRC QINGDAO SIFANG CO., LTD.
- Junyan WANG
- B61 - RAILWAYS
Information Patent Application
Multi-network convergence method and device
- Publication number 20200336874
- Publication date Oct 22, 2020
- CRRC QINGDAO SIFANG CO., LTD.
- Fengchao WANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE