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Shenzhen, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Method and system for establishing emergency call
Patent number
9,001,835
Issue date
Apr 7, 2015
Huawei Technologies Co., Ltd.
Yanfei Yang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and system for establishing emergency call
Patent number
8,040,905
Issue date
Oct 18, 2011
Huawei Technologies Co., Ltd.
Yanfei Yang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
METHOD AND SYSTEM FOR ESTABLISHING EMERGENCY CALL
Publication number
20110310774
Publication date
Dec 22, 2011
Huawei Technologies Co., Ltd
Yanfei Yang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method And System For Emergency Call
Publication number
20100014508
Publication date
Jan 21, 2010
Huawei Technologies Co., Ltd
Yanfei Yang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIP TERMINAL, METHOD AND SYSTEM FOR REPORTING STATUS THEREOF, AND S...
Publication number
20090319657
Publication date
Dec 24, 2009
Huawei Technologies Co., Ltd
Yanfei Yang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method And System For Establishing Emergency Call
Publication number
20090122793
Publication date
May 14, 2009
Huawei Technologies Co., Ltd.
Yanfei Yang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
System and Method for IMS Bridging
Publication number
20070140283
Publication date
Jun 21, 2007
Huawei Technologies Co., Ltd
Hua Huang
H04 - ELECTRIC COMMUNICATION TECHNIQUE