Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7415266 | Method and apparatus for providing pre-pay and post-pay communication services using the same integrated system | Minh Duy Khuc, Carl Rogers, Isaac Shane Allen, Dan Sbisa | 2008-08-19 |
| 6847708 | Method and apparatus for validating pre-pay and post-pay communication services using the same integrated database | Minh Duy Khuc, Carl Rogers, Isaac Shane Allen, Dan Sbisa | 2005-01-25 |
| 6760418 | Method and apparatus for providing pre-pay and post-pay communication services using a switching system to monitor call duration | Minh Duy Khuc, Carl Rogers, Isaac Shane Allen, Dan Sbisa | 2004-07-06 |
| 6535727 | Method and apparatus for providing pre-pay and post-pay communication services using the same integrated | Minh Duy Khuc, Carl Rogers, Isaac Shane Allen, Dan Sbisa | 2003-03-18 |
| 6307926 | System for detection and prevention of telecommunications fraud prior to call connection | Richard Hillix Barton, Isaac Shane Allen | 2001-10-23 |