Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5987136 | Image authentication patterning | John F. Schipper | 1999-11-16 |
| 5764770 | Image authentication patterning | John F. Schipper | 1998-06-09 |
| 5754657 | Authentication of a message source | John F. Schipper, Peter Van Wyck Loomis, James M. Janky, Len Sheynblat | 1998-05-19 |
| 5194952 | Video processing system having improved transition control and display | — | 1993-03-16 |