Issued Patents 1994
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5360713 | Yellow dye-forming couplers and color photographic elements containing these couplers | Ping-Wah Tang, Stanley W. Cowan | 1994-11-01 |
| 5358835 | Photographic elements containing new yellow-dye-forming tris couplers | Ping-Wah Tang, Stanley W. Cowan | 1994-10-25 |
| 5358836 | Photographic elements containing new magenta-dye-forming tris couplers | Ping-Wah Tang, Stanley W. Cowan | 1994-10-25 |
| 5358837 | Photographic elements containing new magenta-dye-forming bis couplers | Ping-Wah Tang, Terrence C. Mungal, Stanley W. Cowan | 1994-10-25 |
| 5358838 | Photographic elements containing new yellow-dye-forming tris couplers | Ping-Wah Tang, Stanley W. Cowan | 1994-10-25 |
| 5340708 | Photographic elements containing new dye-forming tris couplers | Ping-Wah Tang, Stanley W. Cowan | 1994-08-23 |