David A. Zahn

Person

Naperville, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Request to block use of remotely selected ring tone
- Patent number 8,160,220
- Issue date Apr 17, 2012
- Alcatel Lucent
- Gerald W. Pfleging
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Ring tone selected by calling party of third party played to called...
- Patent number 7,792,264
- Issue date Sep 7, 2010
- Alcatel-Lucent USA Inc.
- Gerald W. Pfleging
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Methods and systems for locating VOIP terminals for improved 911 se...
- Patent number 7,388,490
- Issue date Jun 17, 2008
- Lucent Technologies Inc.
- Gregory A. Freitag
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Method and apparatus for call reroute based upon QoS
- Publication number 20070171816
- Publication date Jul 26, 2007
- LUCENT TECHNOLOGIES INC.
- Gerald W. Pfleging
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and system for measurement of voice quality using coded signals
- Publication number 20070168195
- Publication date Jul 19, 2007
- George P. Wilkin
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Methods and systems for locating VOIP terminals for improved 911 se...
- Publication number 20070013516
- Publication date Jan 18, 2007
- LUCENT TECHNOLOGIES INC.
- Gregory A. Freitag
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Location information display for cellular device
- Publication number 20070004426
- Publication date Jan 4, 2007
- Gerald W. Pfleging
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Request to block use of remotely selected ring tone
- Publication number 20060233335
- Publication date Oct 19, 2006
- Gerald W. Pfleging
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Multiple IP identities for end user telephony devices
- Publication number 20060221947
- Publication date Oct 5, 2006
- Mark C. Baker
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Ring tone selected by calling party or third party played to called...
- Publication number 20060215827
- Publication date Sep 28, 2006
- Gerald W. Pfleging
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

David A. Zahn

Person

Patents Grantslast 30 patents

Request to block use of remotely selected ring tone

Ring tone selected by calling party of third party played to called...

Methods and systems for locating VOIP terminals for improved 911 se...

Patents Applicationslast 30 patents

Method and apparatus for call reroute based upon QoS

Method and system for measurement of voice quality using coded signals

Methods and systems for locating VOIP terminals for improved 911 se...

Location information display for cellular device

Request to block use of remotely selected ring tone

Multiple IP identities for end user telephony devices

Ring tone selected by calling party or third party played to called...