Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6035188 | Active waveform collection for use in transmitter identification | David N. Hoogerwerf, Evan R. Green, David M. Stanhope | 2000-03-07 |
| 5956635 | Detection and prevention of channel grabbing in a wireless communications system | David N. Hoogerwerf, David M. Stanhope | 1999-09-21 |
| 5924025 | System and method for detection of redial fraud in a cellular telephone system | Dmitry Kaplan, Chetan Sharma | 1999-07-13 |