Steven Zweifach

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Alexandria, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for encoding telecommunications user information
- Patent number 8,422,989
- Issue date Apr 16, 2013
- Sprint Communications Company L.P.
- Thomas Edward Hines
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for sharing mobile user event information betw...
- Patent number 6,839,554
- Issue date Jan 4, 2005
- Invertix Corporation
- Mark McDowell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for sharing mobile user event information betw...
- Patent number 6,668,167
- Issue date Dec 23, 2003
- Mark McDowell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Method and apparatus for sharing mobile user event information betw...
- Publication number 20020086672
- Publication date Jul 4, 2002
- Mark McDowell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Use of presence and location information concerning wireless subscr...
- Publication number 20020035605
- Publication date Mar 21, 2002
- Mark McDowell
- G01 - MEASURING TESTING
Information Patent Application
Method and apparatus for sharing mobile user event information betw...
- Publication number 20010034224
- Publication date Oct 25, 2001
- Mark McDowell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE