Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5343121 | Naturalistic illumination system | Michael Terman, Stephen Fairhurst | 1994-08-30 |
| 5034981 | Anti-copying video signal processing | Eugene Leonard, Karoly Budai, William R. Dolson | 1991-07-23 |
| 4914694 | Modifying a television signal to inhibit recording/reproduction | Eugene Leonard, Karoly Budai, William R. Dolson | 1990-04-03 |
| 4752676 | "Reliable secure, updatable ""cash"" card system" | Eugene Leonard | 1988-06-21 |