Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5272048 | Reversal photographic elements containing tabular grain emulsions | Sang H. Kim, Mamie Kam-Ng, Allen K. Tsaur, Jacob I. Cohen, George H. Hawks, III +1 more | 1993-12-21 |
| 5236817 | Tabular grain emulsion containing reversal photographic elements exhibiting improved sharpness in underlying layers | Sang H. Kim, Mamie Kam-Ng, Allen K. Tsaur, Jacob I. Cohen, George H. Hawks, III +1 more | 1993-08-17 |
| 4283477 | Photothermographic material and process | George L. Fletcher, Jr., Stewart H. Merrill | 1981-08-11 |
| 4220709 | Heat developable imaging materials and process | — | 1980-09-02 |