Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9686270 | Authentication systems and methods using a packet telephony device | — | 2017-06-20 |
| 9565220 | Systems and methods for preventing fraud in an internet protocol telephony system | Vishal Patel, William Lonergan, Nirav Kadakia, Michael South, Zhiyu Guo | 2017-02-07 |
| 8635454 | Authentication systems and methods using a packet telephony device | — | 2014-01-21 |
| 5465293 | Apparatus and method for screening foreign incollect calls to domestic non-collect call telephone numbers to reduce fraud | Martin S. Chiller, Peter Coulter | 1995-11-07 |