Joan Madden

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Morristown, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for handling incoming calls directed to a virtual communicat...
- Patent number 7,336,656
- Issue date Feb 26, 2008
- AT&T Corp.
- Yihsiu Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for handling incominc calls directed to a virtual communicat...
- Patent number 6,870,835
- Issue date Mar 22, 2005
- AT&T Corp.
- Yihsiu Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR HANDLING INCOMING CALLS DIRECTED TO A VIRTUAL COMMUNICAT...
- Publication number 20080043967
- Publication date Feb 21, 2008
- Yihsiu Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE