Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6140941 | Open road cashless toll collection system and method using transponders and cameras to track vehicles | Douglas Dwyer, Stephen J. Feitelson, Jeanne M. Perales-Herdt, Gary S. Gallagher, Thomas L. McDaniel +1 more | 2000-10-31 |
| 5848160 | Digital synthesized wideband noise-like waveform | Khiem V. Cai | 1998-12-08 |
| 5648767 | Transponder detection system and method | Robert C. Knittle | 1997-07-15 |
| 5592181 | Vehicle position tracking technique | Khiem V. Cai | 1997-01-07 |
| 5227803 | Transponder location and tracking system and method | Peter D. Shloss, Michael Y. Nishida | 1993-07-13 |
| 5121408 | Synchronization for entry to a network in a frequency hopping communication system | Khiem V. Cai | 1992-06-09 |
| 5097485 | HF high data rate modem | Khiem V. Cai | 1992-03-17 |
| 4677617 | Rapid frequency-hopping time synchronization | Keith A. Lane | 1987-06-30 |