Issued Patents 1997
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686235 | Photographic elements containing cyan dye-forming coupler having a sulfone ballast group | Stanley W. Cowan, Louis J. Rossi | 1997-11-11 |
| 5681689 | Photographic material containing acrylate or acrylamide based yellow dye-forming couplers | Stanley W. Cowan | 1997-10-28 |
| 5674666 | Photographic elements containing new cyan dye-forming coupler providing improved color reproduction | Louis J. Rossi, Stanley W. Cowan | 1997-10-07 |
| 5670302 | Photographic elements containing new magenta dye-forming couplers | Louis J. Rossi, Stanley W. Cowan | 1997-09-23 |
| 5654132 | Photographic materials and process comprising ureido naphtholic cyan couplers | Stanley W. Cowan | 1997-08-05 |
| 5614357 | Photographic element containing a particular cyan coupler bearing a sulfonyl containing ballast | Stanley W. Cowan | 1997-03-25 |