Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4598030 | Photographic products employing novel nondiffusible metal complexes of azo dyes | — | 1986-07-01 |
| 4581314 | Polymeric mordant containing nitrogen-coordinating ligand for metallizable dyes | Ignazio S. Ponticello, Philip S. Bryan | 1986-04-08 |
| 4568633 | Photographic elements and processes utilizing imagewise reduction of ferric ions | Frank V. Lovecchio, Robert C. Stewart | 1986-02-04 |
| 4562139 | Photographic products employing novel nondiffusible metal complexes of azo dyes | — | 1985-12-31 |
| 4555478 | Photographic element and process for providing metal complex color images | Janice M. Palumbo | 1985-11-26 |
| 4495100 | Non-diffusible cyan compound capable of releasing a 6-heterocyclylazo-3-pyridinol | James K. Elwood | 1985-01-22 |
| 4495098 | Coordination complexes of polyvalent metal ions and cyan dye-releasing compounds comprising a 6-heterocyclazo-3-pyridinol | James K. Elwood | 1985-01-22 |
| 4476207 | Photographic products and processes employing novel nondiffusible cyan dye-releasing compounds and precursors thereof | James K. Elwood | 1984-10-09 |
| 4419435 | Photographic products and processes employing 6-heterocyclylazo-3-pyridinol nondiffusible cyan dye-releasing compounds and precursors thereof | James K. Elwood | 1983-12-06 |
| 4363865 | Imido methyl blocked photographic dyes and dye releasing compounds | Thomas R. Welter | 1982-12-14 |
| 4358404 | Nondiffusible 6-arylazo-3-pyridinol | Derek D. Chapman | 1982-11-09 |
| 4350752 | Photographic elements and film units containing imidomethyl blocked photographic reagents | Thomas R. Welter | 1982-09-21 |
| 4346155 | Photographic products and processes employing novel nondiffusible 6-arylazo-3-pyridinol magenta dye-releasing compounds and percursors thereof | Derek D. Chapman | 1982-08-24 |
| 4287292 | Photographic products and processes employing novel nondiffusible 6-arylazo-3-pyridinol magenta dye-releasing compounds and precursors thereof | Derek D. Chapman | 1981-09-01 |