Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5450524 | Password verification system based on a difference of scores | — | 1995-09-12 |
| 5430827 | Password verification system | — | 1995-07-04 |
| 5003574 | Voice capture system | Dong L. Denq, Linda Mattson, Robert J. Perdue | 1991-03-26 |