Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6255045 | Color photographic element containing improved polymeric disulfonamidophenol for scavenging oxidized developer | Tienteh Chen, Stephen P. Singer | 2001-07-03 |
| 6107017 | Photographic elements containing high-boiling diester solvents | Paul B. Merkel | 2000-08-22 |
| 6054258 | Photographic elements containing high-boiling esters | Paul B. Merkel | 2000-04-25 |
| 5965341 | Photographic element containing particular coupler combination | Paul B. Merkel, Jerrold N. Poslusny | 1999-10-12 |
| 5942381 | Photographic element and process employing active, stable benzotriazole-releasing DIR couplers | Paul B. Merkel, Jerrold N. Poslusny | 1999-08-24 |
| 5856072 | Photographic element containing 5-carbamoyl resorcinol interlayer scavenger | Stephen P. Singer | 1999-01-05 |
| 5821039 | Photographic element containing neutral dye-forming resorcinol coupler | Stephen P. Singer | 1998-10-13 |
| 5561035 | Photographic elements containing scavengers for oxidized developing agent | Stephen P. Singer | 1996-10-01 |
| 5561036 | Photographic elements containing scavengers for oxidized developing agent | Stephen P. Singer | 1996-10-01 |
| 5521057 | Photographic elements comprising 2-phenylcarbamoyl-1-naphthol image-modifying couplers yeilding dyes resistant to crystallization and reduction | Paul B. Merkel, Jerrold N. Poslusny, 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, Jerrold N. Poslusny, Melvin M. Kestner, David A. Steele | 1996-05-07 |
| 5506094 | Photographic elements comprising 2-phenylcarbamoyl-1-naphthol image-modifying couplers yielding dyes resistant to crystallization and reduction | Paul B. Merkel, Jerrold N. Poslusny, Melvin M. Kestner, David A. Steele | 1996-04-09 |
| 5250399 | Photographic material and process comprising a universal coupler | Richard P. Szajewski, Jerrold N. Poslusny, David A. Steele, Teh-Hsuan Chen, Paul A. Burns +1 more | 1993-10-05 |
| 5104769 | High contrast photographic element and emulsion and process for their use | Jerome J. Looker, Lee J. Fleckenstein | 1992-04-14 |
| 4948721 | Photographic recording materials with enhanced latent image stability | Roger Lok | 1990-08-14 |
| 4874866 | Photographically useful chalcogenazoles, chalcogenazolines, and chalcogenazolinium and chalcogenazolium salts | Wolfgang H. H. Gunther, Rosemary Przyklek | 1989-10-17 |
| 4831136 | Oxatellurazolium and oxatellurazinium compounds | Wolfgang H. H. Gunther, Rosemary Przyklek | 1989-05-16 |
| 4576905 | Photographically useful chalcogenazoles, chalcogenazolines, and chalcogenazolinium and chalcogenazolium salts | Wolfgang H. H. Gunther, Rosemary Przyklek | 1986-03-18 |
| 4276364 | Acylhydrazinophenylthiourea nucleating agents and photographic emulsions and elements containing such agents | — | 1981-06-30 |
| T997004 | Acylhydrazinophenylthiourea nucleating agents and photographic emulsions and elements containing such agents | — | 1980-08-05 |