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, David J. Decker, Stanley W. Cowan | 1997-12-16 |
| 5688964 | Process for preparing a acylhyrazino pyrazole derivative | Robert F. Romanet | 1997-11-18 |