Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6265600 | Activated propenes as color couplers method for the production thereof | — | 2001-07-24 |
| 5876912 | Pyrazolo 1,5 a benzimidazole photographic color couplers | Michael W. Crawley, Andrew Gibson, Paul L. Stanley | 1999-03-02 |
| 5776669 | Phenol substituted pyrazolo 1, 5-a benzimidazole couplers | Michael W. Crawley, Andrew Gibson | 1998-07-07 |
| 5498515 | Photographic element containing a certain sulfonated acylacetanilide coupler in combination with low- or non-chloride emulsions | Paul B. Merkel, Jerrold N. Poslusny, Bernard A. Clark, Paul L. Stanley | 1996-03-12 |
| 5470696 | Photographic color couplers and photographic materials containing them | — | 1995-11-28 |
| 5466813 | Imine dye and photographic elements containing same | Donald R. Diehl, Margaret J. Helber | 1995-11-14 |
| 5460927 | Activated propenes as color couplers and a method for production of photographic elements therewith | — | 1995-10-24 |
| 5451493 | Photographic element containing a certain sulfonated acylacetanilide coupler in combination with a development inhibitor releasing coupler | Paul B. Merkel, Jerrold N. Poslusny, James P. Merrill, Bernard A. Clark, Paul L. Stanley | 1995-09-19 |
| 5443945 | Activated propenes as colour couplers | — | 1995-08-22 |
| 5437962 | Photographic elements containing particular color couplers in combination with particular stabilizers | Rakesh K. Jain, Thomas H. Jozefiak | 1995-08-01 |
| 5436124 | Photographic elements containing particular color couplers in combination with polymeric stabilizers | Rakesh K. Jain, Thomas H. Jozefiak | 1995-07-25 |
| 5434041 | Photographic elements containing particular color couplers in combination with hydroquinone type stabilizers | Rakesh K. Jain, Thomas H. Jozefiak | 1995-07-18 |
| 5434040 | Photographic elements containing particular color couplers in combination with metal complex stabilizers | Rakesh K. Jain, Thomas H. Jozefiak, Sundaram Krishnamurthy, John L. Pawlak | 1995-07-18 |
| 5260179 | Photographic elements containing imine dyes | Donald R. Diehl, Margaret J. Helber | 1993-11-09 |