Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5283340 | Photographic material and process comprising wash-out naphtholic coupler | William J. Begley, Teh-Hsuan Chen, Hans G. Ling, Arlyce T. Bowne | 1994-02-01 |
| 5158865 | Photographic elements containing removable filter dye | Peter R. Seoane, Michael P. Youngblood | 1992-10-27 |
| 5151343 | Photographic material and process comprising wash-out naphtholic coupler | William J. Begley, Teh-Hsuan Chen, Hans G. Ling, Arlyce T. Bowne | 1992-09-29 |
| 5118594 | Photographic elements containing removable couplers | Gregory J. Lestina, Jon D. Bass, Stephen P. Singer | 1992-06-02 |
| 5110942 | Dye derived from a pyrazolotriazole | Paul A. Burns | 1992-05-05 |
| 5051343 | Photographic elements containing removable couplers | Gregory J. Lestina, Jon D. Bass, Stephen P. Singer | 1991-09-24 |
| 5021325 | Photographic material and process comprising a pyrazolotriazole coupler | Paul A. Burns | 1991-06-04 |
| 4990430 | Process for retouching dye images | Paul A. Burns | 1991-02-05 |
| 4948722 | Photographic material and process comprising a pyrazoloazole dye-forming coupler | — | 1990-08-14 |
| 4923784 | Photographic elements containing a bleach accelerator precursor | Stephen P. Singer | 1990-05-08 |
| 4923787 | Photographic element containing scavenger for oxidized developing agent | — | 1990-05-08 |
| 4865956 | Photographic elements containing a bleach accelerator precursor | Stephen P. Singer | 1989-09-12 |
| 4684604 | Oxidative release of photographically useful groups from hydrazide compounds | — | 1987-08-04 |