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Safwan A. Khan
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Gainesville, VA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method and system for providing presence information related to a c...
Patent number
8,306,057
Issue date
Nov 6, 2012
Nextel Communications, Inc.
Safwan A. Khan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Implementing redirect on interoperability gateway for CDMA terminat...
Patent number
8,059,613
Issue date
Nov 15, 2011
Nextel Communications Inc.
Steven Barrow
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System and method for operating a user functionality in a mobile co...
Patent number
8,036,648
Issue date
Oct 11, 2011
Nextel Communications, Inc.
Steven W. Barrow
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Efficient selection of interoperability gateway for CDMA terminated...
Patent number
8,027,316
Issue date
Sep 27, 2011
Nextel Communications Inc.
Steven Barrow
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and system for routing a push-to-talk (PTT) call in a commun...
Patent number
7,831,266
Issue date
Nov 9, 2010
Nextel Communications Inc.
Safwan Khan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System and method for dispatch roaming registration
Patent number
7,822,437
Issue date
Oct 26, 2010
Nextel Communications Inc.
Steven W. Barrow
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for handling integrated digital enhanced netwo...
Patent number
7,636,580
Issue date
Dec 22, 2009
Nextel Communications Inc.
Steven W. Barrow
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
System and method for dispatch roaming registration
Publication number
20060072517
Publication date
Apr 6, 2006
Steven W. Barrow
H04 - ELECTRIC COMMUNICATION TECHNIQUE