Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6421438 | Intelligent services network architecture for global calling card mobility | Leonard Denton, Dennis S. Morton, Sharadha Vijay | 2002-07-16 |
| 5640446 | System and method of validating special service calls having different signaling protocols | David Alan Everett, George Kult, Lee C. Seydel, Padmanabhan Vijay | 1997-06-17 |
| 5638431 | Calling card validation system and method therefor | David Alan Everett, George Kult, Lee C. Seydel, Padmanabhan Vijay | 1997-06-10 |