Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 9112976 | Parking and routing network calls and sessions | David E. Phelps, Frances D. E. Taylor | 2015-08-18 | $23,838,000 |
| 8798253 | Network routing | Phillip D. Crable, Mariafranca Gregorat, Steven L. Lass, Richard L. McClain, Sandra A. Paiement +5 more | 2014-08-05 | $31,668,000 |
| 8351584 | Least cost call routing | Scott A. Booth, Courtney Cepak, Daniel Emile Du Toit, Melinda Brooke Vanderoef, Peter Shotwell +2 more | 2013-01-08 | $40,168,000 |
| 6763098 | Call blocking based on call properties | Phillip D. Crable, Deanna D. Willoughby | 2004-07-13 | |
| 6522734 | Transaction billing for special service telephone numbers | Phillip D. Crable, Shannon S. Smith, Deanna D. Willoughby | 2003-02-18 |