Liquan Zhang

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Guangdong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Videoconference system and management method thereof
- Patent number 8,310,518
- Issue date Nov 13, 2012
- Huawei Technologies Co., Ltd.
- Liquan Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for calling video communication service by video communicati...
- Patent number 7,808,522
- Issue date Oct 5, 2010
- Huawei Technologies Co., Ltd.
- Yufeng Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Videoconference system and a management method thereof
- Patent number 7,683,923
- Issue date Mar 23, 2010
- Huawei Technologies Co., Ltd.
- Liquan Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
VIDEOCONFERENCE SYSTEM AND MANAGEMENT METHOD THEREOF
- Publication number 20100134589
- Publication date Jun 3, 2010
- Huawei Technologies Co., Ltd
- Liquan ZHANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Videoconference system and a management method thereof
- Publication number 20070091169
- Publication date Apr 26, 2007
- Liquan Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method for calling video communication service by video communicati...
- Publication number 20030147357
- Publication date Aug 7, 2003
- Huawei Technologies Co., Ltd
- Yufeng Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE