Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5972574 | Photographic element containing magenta coupler having improved manufacturability and dye light stability | Susan M. Fischer, Robert F. Romanet, Daniel L. Kapp, Paul A. Burns, Paul P. Spara +1 more | 1999-10-26 |
| 5605787 | 3-anilino pyrazolone magenta couplers and process | John L. Pawlak, David S. Bailey, Charles E. Romano, Jr., Paul B. Merkel, Sundaram Krishnamurthy | 1997-02-25 |
| 5561037 | Photographic elements containing magenta dye forming couplers and fade reducing compounds | Rakesh K. Jain | 1996-10-01 |
| 5491054 | Photographic elements containing 2-equivalent pyrazolone magenta dye forming couplers and stabilizing compounds | Rakesh K. Jain, Robert C. Stewart | 1996-02-13 |
| 5484696 | Photographic elements containing 2-equivalent pyrazolone magenta dye forming couplers and fade reducing compounds | Rakesh K. Jain, Robert C. Stewart | 1996-01-16 |
| 5447830 | 3-anilino pyrazolone magenta couplers and process | John L. Pawlak, David S. Bailey, Charles E. Romano, Jr., Paul B. Merkel, Sundaram Krishnamurthy | 1995-09-05 |
| 5183894 | 2-substituted-1-hydroxyindoles | Thomas R. Welter | 1993-02-02 |
| 5118695 | 1-hydroxyindole fungicides | Thomas R. Welter | 1992-06-02 |