Issued Patents 1997
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698386 | Photographic dye-forming coupler, emulsion layer, element, and process | Ping-Wah Tang, David J. Decker, Susan M. Fischer | 1997-12-16 |
| 5686235 | Photographic elements containing cyan dye-forming coupler having a sulfone ballast group | Philip T. S. Lau, Louis J. Rossi | 1997-11-11 |
| 5681689 | Photographic material containing acrylate or acrylamide based yellow dye-forming couplers | Philip T. S. Lau | 1997-10-28 |
| 5677118 | Photographic element containing a recrystallizable 5-pyrazolone photographic coupler | Paul P. Spara, Sundaram Krishnamurthy, Ruthann M. McGarry | 1997-10-14 |
| 5674666 | Photographic elements containing new cyan dye-forming coupler providing improved color reproduction | Philip T. S. Lau, Louis J. Rossi | 1997-10-07 |
| 5670302 | Photographic elements containing new magenta dye-forming couplers | Philip T. S. Lau, Louis J. Rossi | 1997-09-23 |
| 5667952 | Photographic material and process comprising a bicyclic pyrazolo coupler | Ping-Wah Tang | 1997-09-16 |
| 5654132 | Photographic materials and process comprising ureido naphtholic cyan couplers | Philip T. S. Lau | 1997-08-05 |
| 5614357 | Photographic element containing a particular cyan coupler bearing a sulfonyl containing ballast | Philip T. S. Lau | 1997-03-25 |
| 5609996 | Photographic emulsion layer containing pyrazoloazole coupler exhibiting improved dye light fade | Ping-Wah Tang, David J. Decker, Terrence C. Mungal | 1997-03-11 |