Donald J. Maurer

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Cedar Rapids, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Systems and methods for receiving telephone calls via instant messa...
- Patent number 8,553,857
- Issue date Oct 8, 2013
- Verizon Business Global LLC
- Joel Hanson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Systems and methods for receiving telephone calls via instant messa...
- Patent number 7,274,778
- Issue date Sep 25, 2007
- Verizon Business Global LLC
- Joel Hanson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Systems and methods for receiving telephone calls via instant messa...
- Patent number 6,697,474
- Issue date Feb 24, 2004
- WorldCom, Inc.
- Joel Hanson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
SYSTEMS AND METHODS FOR RECEIVING TELEPHONE CALLS VIA INSTANT MESSA...
- Publication number 20070230673
- Publication date Oct 4, 2007
- VERIZON BUSINESS GLOBAL LLC
- Joel Hanson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Systems and methods for receiving telephone calls via instant messa...
- Publication number 20040161089
- Publication date Aug 19, 2004
- Joel Hanson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE