Changcheng Yan

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Guangdong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method for monitoring connection state of user
- Patent number 7,836,167
- Issue date Nov 16, 2010
- Huawei Technologies Co., Ltd.
- Haitao Zhu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Method for monitoring connection state of user
- Publication number 20070282998
- Publication date Dec 6, 2007
- Haitao Zhu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE