Issued Patents All Time
Showing 1–25 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6162598 | Silver halide photographic element containing improved yellow dye-forming coupler | Robert G. Cameron | 2000-12-19 |
| 6143485 | Pyrazolotriazle dye-forming photographic coupler | Stanley W. Cowan | 2000-11-07 |
| 6130032 | Photographic elements containing improved yellow dye-forming couplers | James H. Reynolds, Daniel E. Corcoran | 2000-10-10 |
| 6096494 | Silver halide photographic element containing improved cyan dye-forming phenolic coupler | Margaret D. Steele | 2000-08-01 |
| 6040126 | Photographic yellow dye-forming couplers | Barbara B. Lussier, Stanley W. Cowan | 2000-03-21 |
| 5864042 | Process for preparation of a 4-amino-5-mercapto-3-substituted-1,2,4!triazole compound | Francesco DeBellis | 1999-01-26 |
| 5851748 | Photographic materials and process comprising a particular acylacetanilide yellow dye-forming coupler | Stanley W. Cowan, David J. Decker, Thomas A. Rosiek | 1998-12-22 |
| 5811230 | Photographic material comprising a bicyclic pyrazolo coupler | Wendell Smith, Stanley W. Cowan | 1998-09-22 |
| 5698386 | Photographic dye-forming coupler, emulsion layer, element, and process | David J. Decker, Susan M. Fischer, Stanley W. Cowan | 1997-12-16 |
| 5681690 | Photographic dye-forming coupler, emulsion layer, element, and process | Thomas H. Jozefiak | 1997-10-28 |
| 5667952 | Photographic material and process comprising a bicyclic pyrazolo coupler | Stanley W. Cowan | 1997-09-16 |
| 5609996 | Photographic emulsion layer containing pyrazoloazole coupler exhibiting improved dye light fade | Stanley W. Cowan, David J. Decker, Terrence C. Mungal | 1997-03-11 |
| 5576150 | Photographic dye-forming coupler, emulsion layer, element, and process | Stanley W. Cowan, David J. Decker, Daniel E. Corcoran | 1996-11-19 |
| 5510492 | Process of preparing pyrazolo 1,5-b! 1,2,4! triazoles | Terrence C. Mungal | 1996-04-23 |
| 5457020 | Photographic material and process comprising a bicyclic pyrazolo coupler | Philip T. S. Lau, Stanley W. Cowan | 1995-10-10 |
| 5455147 | Methods of forming polymeric couplers | Tien-Teh Chen, Stanley W. Cowan, Edward Schofield | 1995-10-03 |
| 5441863 | Photographic elements with heterocyclic cyan dye-forming couplers | Thomas H. Jozefiak, David J. Decker | 1995-08-15 |
| 5427898 | Yellow couplers having an arloxy coupling-off group which contains an ortho polarizable functional group | Philip T. S. Lau, Stanley W. Cowan, Terrence C. Mungal | 1995-06-27 |
| 5424179 | Photographic element with a cyclic azole coupler having a saccharin substituent | Terrence C. Mungal | 1995-06-13 |
| 5395968 | Intermediates and process for preparing magenta couplers | — | 1995-03-07 |
| 5360713 | Yellow dye-forming couplers and color photographic elements containing these couplers | Philip T. S. Lau, Stanley W. Cowan | 1994-11-01 |
| 5360710 | Color photographic materials containing polymeric couplers | Tien-Teh Chen, Stanley W. Cowan, Edward Schofield | 1994-11-01 |
| 5358837 | Photographic elements containing new magenta-dye-forming bis couplers | Terrence C. Mungal, Philip T. S. Lau, Stanley W. Cowan | 1994-10-25 |
| 5358829 | Photographic material and process comprising a bicyclic pyrazolo coupler | Stanley W. Cowan | 1994-10-25 |
| 5358835 | Photographic elements containing new yellow-dye-forming tris couplers | Philip T. S. Lau, Stanley W. Cowan | 1994-10-25 |