Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5368902 | Method for making patterned thin film | David W. Todd, Lindsey Brown, Elliot E. Overshiner | 1994-11-29 |
| 5281480 | Optically variable multilayer structure on flexible web | Thomas Mayer, Gary S. Ash | 1994-01-25 |
| 5279657 | Optically variable printing ink | Thomas Mayer, Gary S. Ash | 1994-01-18 |
| 5278590 | Transparent optically variable device | Paul G. Coombs | 1994-01-11 |