Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7085554 | Subscriber migration system | Donald F. Picard, Douglas Raponi, Ray Jimenez | 2006-08-01 |
| 6263060 | Transportable logic to facilitate a large calling card transaction network supporting dynamic changes | Patrick J. MeLampy, Robert Penfield | 2001-07-17 |
| 5493607 | Multi-system network addressing | Allen T. Arumainayagam, Robert Penfield, Anthony Deigh | 1996-02-20 |