Inventor · disambiguated record
Richard L. Khan
Also filed as: KHAN RICHARD · KHAN RICHARD L
16 granted patents·457 citations·filing 2005–2015
94Inventor score
Files withAT & T IP I LP6QIU CHAOXIN5QIU CHAOXIN CHARLES2ATT KNOWLEDGE VENTURES L P1CRAWFORD DWAYNE1
Top patents by PatentIndex Score
16 records- 0198US9019870B2Systems and methods for location management and emergency support for a voice over internet protocol deviceAT & T IP I LP·Filed 2013·Granted Apr 28, 2015·75 cites·17 claims
- 0297US8620257B2Systems and methods for location management and emergency support for a voice over internet protocol deviceQIU CHAOXIN CHARLES·Filed 2007·Granted Dec 31, 2013·107 cites·20 claims
- 0396US8531995B2Systems and methods for location management and emergency support for a voice over internet protocol deviceKHAN RICHARD L·Filed 2006·Granted Sep 10, 2013·111 cites·24 claims
- 0496US7639792B2System and method for location management and emergency support for a voice over internet protocol deviceATT KNOWLEDGE VENTURES L P·Filed 2005·Granted Dec 29, 2009·55 cites·8 claims
- 0595US8189568B2System and method for location management and emergency support for a voice over internet protocol deviceQIU CHAOXIN·Filed 2009·Granted May 29, 2012·37 cites·13 claims
- 0693US8938209B2Method to implement E911 services in IMS (IP multimedia subsystem)AT & T IP I LP·Filed 2013·Granted Jan 20, 2015·23 cites·20 claims
- 0792US8396445B2Method to implement E911 services in IMS (IP Multimedia Subsystem)CRAWFORD DWAYNE·Filed 2009·Granted Mar 12, 2013·36 cites·19 claims
- 0875US9264290B2System and method for location management and emergency support for a voice over internet protocol deviceQIU CHAOXIN·Filed 2012·Granted Feb 16, 2016·3 cites·13 claims
- 0970US8867526B2Method and apparatus for providing mobility for a voice over internet protocol serviceQIU CHAOXIN·Filed 2007·Granted Oct 21, 2014·4 cites·13 claims
- 1069US8576833B2Fault tolerant voice over Internet protocol (VoIP) systems and methods to operate the sameQIU CHAOXIN CHARLES·Filed 2006·Granted Nov 5, 2013·4 cites·29 claims
- 1162US8606901B2Facilitating deployment of new application services in a next generation networkQIU CHAOXIN·Filed 2008·Granted Dec 10, 2013·2 cites·11 claims
- 1258US9380440B2Method to implement E911 services in IMS (IP multimedia subsystem)AT & T IP I LP·Filed 2014·Granted Jun 28, 2016·0 cites·20 claims
- 1351US9432467B2Systems and methods for location management and emergency support for a voice over internet protocol deviceAT & T IP I LP·Filed 2015·Granted Aug 30, 2016·0 cites·20 claims
- 1448US9578127B2Method and apparatus for call processing for SIP and ISUP interworkingAT & T IP I LP·Filed 2014·Granted Feb 21, 2017·0 cites·20 claims
- 1548US9231837B2Methods and apparatus for collecting, analyzing, and presenting data in a communication networkAT & T IP I LP·Filed 2013·Granted Jan 5, 2016·0 cites·20 claims
- 1646US8798095B2Method and apparatus for call processing for SIP and ISUP interworkingQIU CHAOXIN·Filed 2007·Granted Aug 5, 2014·0 cites·21 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →