Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6334678 | Method for applying chemical watermarks on substrate | Robert L. Daigneault, Michael F. Koenig, Daniel Robert Rogers, Jiyue Yang | 2002-01-01 |
| 4724002 | Heat-sensitive transfer media | Tomoo Shibata | 1988-02-09 |