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Richard L. Khan
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San Ramon, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for call processing for SIP and ISUP interworking
Patent number
9,578,127
Issue date
Feb 21, 2017
AT&T Intellectual Property I, L.P.
Chaoxin Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Systems and methods for location management and emergency support f...
Patent number
9,432,467
Issue date
Aug 30, 2016
AT&T Intellectual Property I, L.P.
Richard L. Khan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method to implement E911 services in IMS (IP multimedia subsystem)
Patent number
9,380,440
Issue date
Jun 28, 2016
AT&T Intellectual Property I, L.P.
Dwayne Crawford
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System and method for location management and emergency support for...
Patent number
9,264,290
Issue date
Feb 16, 2016
AT&T Intellectual Property I, L.P.
Chaoxin Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Methods and apparatus for collecting, analyzing, and presenting dat...
Patent number
9,231,837
Issue date
Jan 5, 2016
AT&T Intellectual Property I, L.P.
Kevin James Moisan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Systems and methods for location management and emergency support f...
Patent number
9,019,870
Issue date
Apr 28, 2015
AT&T Intellectual Property I, L.P.
Richard L. Khan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method to implement E911 services in IMS (IP multimedia subsystem)
Patent number
8,938,209
Issue date
Jan 20, 2015
AT&T Intellectual Property I, L.P.
Dwayne Crawford
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for providing mobility for a voice over intern...
Patent number
8,867,526
Issue date
Oct 21, 2014
AT&T Intellectual Property I, L.P.
Chaoxin Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for call processing for SIP and ISUP interworking
Patent number
8,798,095
Issue date
Aug 5, 2014
AT&T Intellectual Property I, L.P.
Chaoxin Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Systems and methods for location management and emergency support f...
Patent number
8,620,257
Issue date
Dec 31, 2013
AT&T Intellectual Property I, L.P.
Chaoxin Charles Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Facilitating deployment of new application services in a next gener...
Patent number
8,606,901
Issue date
Dec 10, 2013
AT&T Intellectual Property I, L.P.
Chaoxin Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Fault tolerant voice over Internet protocol (VoIP) systems and meth...
Patent number
8,576,833
Issue date
Nov 5, 2013
AT&T Intellectual Property I, L.P.
Chaoxin Charles Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Systems and methods for location management and emergency support f...
Patent number
8,531,995
Issue date
Sep 10, 2013
AT&T Intellectual Property I, L.P.
Richard L. Khan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for collecting, analyzing, and presenting data...
Patent number
8,438,264
Issue date
May 7, 2013
AT&T Intellectual Property I, L.P.
Kevin James Moisan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method to implement E911 services in IMS (IP Multimedia Subsystem)
Patent number
8,396,445
Issue date
Mar 12, 2013
AT&T Intellectual Property I, L.P.
Dwayne Crawford
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System and method for location management and emergency support for...
Patent number
8,189,568
Issue date
May 29, 2012
AT&T Intellectual Property I, L.P.
Chaoxin Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System and method for location management and emergency support for...
Patent number
7,639,792
Issue date
Dec 29, 2009
ATT Knowledge Ventures, L.P.
Chaoxin Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
SYSTEMS AND METHODS FOR LOCATION MANAGEMENT AND EMERGENCY SUPPORT F...
Publication number
20150312357
Publication date
Oct 29, 2015
AT&T INTELLECTUAL PROPERTY I, L.P.
Richard L. Khan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD TO IMPLEMENT E911 SERVICES IN IMS (IP MULTIMEDIA SUBSYSTEM)
Publication number
20150094016
Publication date
Apr 2, 2015
AT&T INTELLECTUAL PROPERTY I, L.P.
Dwayne Crawford
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD AND APPARATUS FOR CALL PROCESSING FOR SIP AND ISUP INTERWORKING
Publication number
20140341215
Publication date
Nov 20, 2014
CHAOXIN QIU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SYSTEMS AND METHODS FOR LOCATION MANAGEMENT AND EMERGENCY SUPPORT F...
Publication number
20140016634
Publication date
Jan 16, 2014
AT&T INTELLECTUAL PROPERTY I, L.P.
Richard L. Khan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD TO IMPLEMENT E911 SERVICES IN IMS (IP MULTIMEDIA SUBSYSTEM)
Publication number
20130148549
Publication date
Jun 13, 2013
AT&T INTELLECTUAL PROPERTY I, L.P.
Dwayne Crawford
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHODS AND APPARATUS FOR COLLECTING, ANALYZING, AND PRESENTING DAT...
Publication number
20130148531
Publication date
Jun 13, 2013
AT&T INTELLECTUAL PROPERTY I, L.P.
Kevin James Moisan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SYSTEM AND METHOD FOR LOCATION MANAGEMENT AND EMERGENCY SUPPORT FOR...
Publication number
20120314699
Publication date
Dec 13, 2012
Chaoxin Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD TO IMPLEMENT E911 SERVICES IN IMS (IP MULTIMEDIA SUBSYSTEM)
Publication number
20100233991
Publication date
Sep 16, 2010
AT&T Intellectual Property I, L.P.
Dwayne Crawford
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
System and Method for Location Management and Emergency Support for...
Publication number
20100177671
Publication date
Jul 15, 2010
Chaoxin Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Facilitating Deployment of New Application Services in a Next Gener...
Publication number
20090193071
Publication date
Jul 30, 2009
AT&T KNOWLEDGE VENTURES, L.P.
Chaoxin Qiu
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
METHOD AND APPARATUS FOR CALL PROCESSING FOR SIP AND ISUP INTERWORKING
Publication number
20090097471
Publication date
Apr 16, 2009
AT&T KNOWLEDGE VENTURES, L.P.
CHAOXIN QIU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD AND APPARATUS FOR PROVIDING MOBILITY FOR A VOICE OVER INTERN...
Publication number
20080285544
Publication date
Nov 20, 2008
Chaoxin Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SYSTEMS AND METHODS FOR LOCATION MANAGEMENT AND EMERGENCY SUPPORT F...
Publication number
20080200143
Publication date
Aug 21, 2008
Chaoxin Charles Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
FAULT TOLERANT VOICE OVER INTERNET PROTOCOL (VoIP) SYSTEMS AND METH...
Publication number
20080144605
Publication date
Jun 19, 2008
Chaoxin Charles Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SYSTEMS AND METHODS FOR LOCATION MANAGEMENT AND EMERGENCY SUPPORT F...
Publication number
20080101552
Publication date
May 1, 2008
Richard L. Khan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
System and method for location management and emergency support for...
Publication number
20070115935
Publication date
May 24, 2007
SBC Knowledge Ventures L.P.
Chaoxin Qiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
System for evolvable network design
Publication number
20070081472
Publication date
Apr 12, 2007
Mung Chiang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Methods and apparatus for monitoring a communication network
Publication number
20060142001
Publication date
Jun 29, 2006
Kevin James Moisan
H04 - ELECTRIC COMMUNICATION TECHNIQUE