Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4782010 | Photohermographic emulsions having stable color forming developers | Roger A. Mader, David C. Weigel, Louis M. Leichter | 1988-11-01 |
| 4452883 | Barrier resin for photothermographic color separation | Robert A. Frenchik | 1984-06-05 |