Zahn; David A.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Zahn; David A..The latest application filed is for "method and apparatus for call reroute based upon qos".

Company Profile

0.3.7

Zahn; David A. - Naperville IL

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Request to block use of remotely selected ring tone Grant 8,160,220 - Pfleging , et al. April 17, 2	2012-04-17
Ring tone selected by calling party of third party played to called party Grant 7,792,264 - Pfleging , et al. September 7, 2	2010-09-07
Methods and systems for locating VOIP terminals for improved 911 service Grant 7,388,490 - Freitag , et al. June 17, 2	2008-06-17
Method and apparatus for call reroute based upon QoS App 20070171816 - Pfleging; Gerald W. ; et al.	2007-07-26
Method and system for measurement of voice quality using coded signals App 20070168195 - Wilkin; George P. ; et al.	2007-07-19
Methods and systems for locating VOIP terminals for improved 911 service App 20070013516 - Freitag; Gregory A. ; et al.	2007-01-18
Location information display for cellular device App 20070004426 - Pfleging; Gerald W. ; et al.	2007-01-04
Request to block use of remotely selected ring tone App 20060233335 - Pfleging; Gerald W. ; et al.	2006-10-19
Multiple IP identities for end user telephony devices App 20060221947 - Baker; Mark C. ; et al.	2006-10-05
Ring tone selected by calling party or third party played to called party App 20060215827 - Pfleging; Gerald W. ; et al.	2006-09-28

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