Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5821043 | 1,2,4-triazole-releasing pyrazolone DIR couplers | Paul B. Merkel, David A. Steele | 1998-10-13 |
| 5670306 | Photographic element containing pyrazolone pug releasing coupler and imaging process employing same | Lawrence G. Anderson, Jared B. Mooberry, Wojciech K. Slusarek, Zheng Z. Wu | 1997-09-23 |
| 5576167 | Photographic element containing a stable aryloxypyrazolone coupler and process employing same | Lawrence G. Anderson, Jared B. Mooberry, Zheng Z. Wu | 1996-11-19 |
| 5521057 | Photographic elements comprising 2-phenylcarbamoyl-1-naphthol image-modifying couplers yeilding dyes resistant to crystallization and reduction | Paul B. Merkel, Ronald E. Leone, David A. Steele | 1996-05-28 |
| 5514530 | Photographic elements comprising 2-phenylcarbamoyl-1-naphthol image-modifying couplers yielding dyes resistant to crystallization and reduction | Paul B. Merkel, Melvin M. Kestner, Ronald E. Leone, David A. Steele | 1996-05-07 |
| 5510235 | Photographic elements comprising 2-phenylcarbamoyl-naphthol image-modifying couplers yielding dyes resistant to crystallization and reduction | Paul B. Merkel, Daniel L. Kapp, John R. Ross | 1996-04-23 |
| 5506094 | Photographic elements comprising 2-phenylcarbamoyl-1-naphthol image-modifying couplers yielding dyes resistant to crystallization and reduction | Paul B. Merkel, Melvin M. Kestner, Ronald E. Leone, David A. Steele | 1996-04-09 |
| 5498515 | Photographic element containing a certain sulfonated acylacetanilide coupler in combination with low- or non-chloride emulsions | Paul B. Merkel, Hugh M. Williamson, Bernard A. Clark, Paul L. Stanley | 1996-03-12 |
| 5460930 | Photographic elements containing indoaniline dummy dyes | Paul B. Merkel, Robert J. Ross | 1995-10-24 |
| 5451492 | Photographic elements containing certain acylacetanilide couplers in combination with development inhibitor releasing couplers | Paul B. Merkel, James P. Merrill, Bernard A. Clark, Paul L. Stanley | 1995-09-19 |
| 5451493 | Photographic element containing a certain sulfonated acylacetanilide coupler in combination with a development inhibitor releasing coupler | Paul B. Merkel, James P. Merrill, Bernard A. Clark, Paul L. Stanley, Hugh M. Williamson | 1995-09-19 |
| 5256523 | Photographic element and process | Richard P. Szajewski | 1993-10-26 |
| 5250399 | Photographic material and process comprising a universal coupler | Richard P. Szajewski, David A. Steele, Teh-Hsuan Chen, Paul A. Burns, Ronald E. Leone +1 more | 1993-10-05 |
| 5221600 | Photographic elements containing development accelerator release compounds | Richard P. Szajewski | 1993-06-22 |
| 5026628 | Photographic material and process comprising a compound capable of forming a wash-out dye | William J. Begley, Teh-Hsuan Chen, Kenneth N. Kilminster, Wojciech K. Slusarek | 1991-06-25 |
| 5006448 | Photographic material and process | Richard P. Szajewski, Paul A. Burns, Norma B. Platt, Timothy D. Norden | 1991-04-09 |
| 4962018 | Photographic materials containing DIR compounds and process of imaging | Richard P. Szajewski, Wojciech K. Slusarek | 1990-10-09 |