Issued Patents All Time
Showing 76–81 of 81 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4923791 | Photographic recording material containing a cyan dye-forming coupler | David Hoke | 1990-05-08 |
| 4923788 | Filter dyes for photographic elements | Leslie Shuttleworth, Glenn M. Brown | 1990-05-08 |
| 4861700 | Photographic element containing yellow filter dyes having tricyanovinyl groups | Leslie Shuttleworth | 1989-08-29 |
| 4808502 | Photographic recording material comprising a magenta dye image forming coupler compound | — | 1989-02-28 |
| 4797357 | Light-stable reducible compounds and analytical compositions, elements and methods utilizing same | Albert J. Mura | 1989-01-10 |
| 4524122 | Substituted 4-nitrophenylazo-1-naphthol cyan dyes having improved light stability | Lynda D. Weber, Harold C. Warren, III | 1985-06-18 |