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Shenzhen, CN
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last 30 patents
Information
Patent Grant
Method and device for realizing IP multimedia subsystem disaster to...
Patent number
8,719,617
Issue date
May 6, 2014
Huawei Technologies Co., Ltd.
Jiongjiong Gu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method for authenticating user terminal in IP multimedia sub-system
Patent number
8,335,487
Issue date
Dec 18, 2012
Huawei Technologies Co., Ltd.
Kai Wen
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and device for realizing IP multimedia subsystem disaster to...
Patent number
8,069,365
Issue date
Nov 29, 2011
Huawei Technologies Co., Ltd.
Jiongjiong Gu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and system for enabling number portability in IMS networks
Patent number
7,787,878
Issue date
Aug 31, 2010
Huawei Technologies Co., Ltd.
Hui Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
METHOD AND DEVICE FOR REALIZING IP MULTIMEDIA SUBSYSTEM DISASTER TO...
Publication number
20120044802
Publication date
Feb 23, 2012
Huawei Technologies Co., Ltd
Jiongjiong GU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD AND DEVICE FOR REALIZING IP MULTIMEDIA SUBSYSTEM DISASTER TO...
Publication number
20090210743
Publication date
Aug 20, 2009
Huawei Technologies Co., Ltd
Jiongjiong GU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method For Implementing Access Domain Security of IP Multimedia Sub...
Publication number
20080209532
Publication date
Aug 28, 2008
Huawei Technologies Co., Ltd
Kai Wen
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method for authenticating user terminal in IP multimedia sub-system
Publication number
20080045214
Publication date
Feb 21, 2008
Kai Wen
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method and system for enabling number portability in IMS networks
Publication number
20070121890
Publication date
May 31, 2007
Huawei Technologies Co., Ltd.
Hui Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE