Zhiguang Xu

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Hangzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for managing user information in instant messagin...
- Patent number 8,554,785
- Issue date Oct 8, 2013
- Alibaba Group Holding Limited
- Yongwei Kong
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Method and System for Managing User Information in Instant Messagin...
- Publication number 20100306246
- Publication date Dec 2, 2010
- ALIBABA GROUP HOLDING LIMITED
- Yongwei Kong
- H04 - ELECTRIC COMMUNICATION TECHNIQUE