Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698386 | Photographic dye-forming coupler, emulsion layer, element, and process | Ping-Wah Tang, Susan M. Fischer, Stanley W. Cowan | 1997-12-16 |
| 5609996 | Photographic emulsion layer containing pyrazoloazole coupler exhibiting improved dye light fade | Ping-Wah Tang, Stanley W. Cowan, Terrence C. Mungal | 1997-03-11 |