Issued Patents All Time
Showing 1–25 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7338756 | Method of preparation of direct dispersions of photographically useful chemicals | Paul L. Zengerle, Richard K. Rothrock, Stephen P. Singer, Peter P. Garrisi, Paul B. Merkel | 2008-03-04 |
| 6780573 | Color photographic element containing coupler moiety with improved amino acid timing group | Stephen P. Singer, Christopher W. Grote, Robert C. Stewart, Janet N. Younathan | 2004-08-24 |
| 6680165 | Cyan coupler dispersion with increased activity | Paul B. Merkel, David A. Steele, Drake M. Michno, David S. Ross, Richard K. Rothrock +1 more | 2004-01-20 |
| 6458521 | Color photographic element containing coupler useful for forming neutral silver-based image | Philip T. S. Lau, Stephen P. Singer, Janet N. Younathan, Susan D. Hill, Anabisdally I. Bodden | 2002-10-01 |
| 6365334 | Photographic elements containing aryloxypyrazolone couplers and sulfur containing stabilizers | Paul B. Merkel, Lawrence G. Anderson, Jared B. Mooberry, David Hales Bown | 2002-04-02 |
| 6280919 | Photographic element containing a stable aryloxypyrazolone coupler and process employing the same | Wojciech K. Slusarek, Zheng Z. Wu | 2001-08-28 |
| 6174662 | Combinations of purine-releasing pyrazolone DIR couplers and pyrazolone of pyrazolotriazole imaging couplers | Paul B. Merkel, David A. Steele | 2001-01-16 |
| 6171771 | Photographic element containing a DIR coupler | Paul B. Merkel, Philip A. Allway, David A. Steele | 2001-01-09 |
| 6156490 | Photographic element containing a stable aryloxypyrazolone coupler and process employing same | Wojciech K. Slusarek, Xiqiang Yang | 2000-12-05 |
| 6153369 | Photographic element containing pyrazolone pug releasing coupler and imaging process employing same | Wojciech K. Slusarek, Xiqiang Yang | 2000-11-28 |
| 6150078 | Photographic element containing pyrazolone PUG releasing coupler and imaging process employing same | Wojciech K. Slusarek, Zheng Z. Wu, Xiqiang Yang | 2000-11-21 |
| 6146820 | Photographic element containing a DIR coupler | Paul B. Merkel, Philip A. Allway, David A. Steele | 2000-11-14 |
| 6130031 | Photographic element containing a benzolylacetanilide DIR coupler | Paul B. Merkel, David A. Steele | 2000-10-10 |
| 6087082 | Photographic element containing an acylacetanilide DIR coupler | Paul B. Merkel, David A. Steele | 2000-07-11 |
| 6043016 | Photographic element containing a malonanilide DIR coupler | Paul B. Merkel, Drake M. Michno, Robert C. Stewart | 2000-03-28 |
| 6004737 | Photographic element containing a yellow DIR coupler | Paul B. Merkel, David A. Steele | 1999-12-21 |
| 5998106 | Photographic element containing cylacetamido yellow dye-forming couplers | Paul B. Merkel, David A. Steele, Thomas R. Welter | 1999-12-07 |
| 5998107 | Photographic element containing improved acylacetamido yellow dye-forming coupler | Paul B. Merkel, David A. Steele, Thomas R. Welter | 1999-12-07 |
| 5994038 | Photographic element containing acetamido DIR coupler | Paul B. Merkel, David A. Steele, Thomas R. Welter | 1999-11-30 |
| 5989798 | Combinations of purine-releasing pyrazolone DIR couplers and pyrazolone or pyrazolotriazole imaging couplers | Paul B. Merkel, David A. Steele | 1999-11-23 |
| 5981158 | Photographic element containing a DIR coupler | Paul B. Merkel, James H. Reynolds, Bernard A. Clark, Robert Gourley | 1999-11-09 |
| 5965341 | Photographic element containing particular coupler combination | Paul B. Merkel, Ronald E. Leone | 1999-10-12 |
| 5958662 | Photographic element containing a DIR coupler | Paul B. Merkel, David A. Steele | 1999-09-28 |
| 5942381 | Photographic element and process employing active, stable benzotriazole-releasing DIR couplers | Paul B. Merkel, Ronald E. Leone | 1999-08-24 |
| 5939244 | Photographic coupler and element | David A. Steele, Paul B. Merkel | 1999-08-17 |