Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5723280 | Photographic element comprising a red sensitive silver halide emulsion layer | Steven G. Link, Frederick Charles Derks, Kenneth W. Lowe | 1998-03-03 |
| 4889410 | Magenta filters | — | 1989-12-26 |
| 4495098 | Coordination complexes of polyvalent metal ions and cyan dye-releasing compounds comprising a 6-heterocyclazo-3-pyridinol | James A. Reczek | 1985-01-22 |
| 4495099 | Non-diffusible magenta compound capable of releasing a 4-(2-heterocyclazo)phenol having a heterocyclic ring fused thereto | Steven Evans | 1985-01-22 |
| 4495100 | Non-diffusible cyan compound capable of releasing a 6-heterocyclylazo-3-pyridinol | James A. Reczek | 1985-01-22 |
| 4476207 | Photographic products and processes employing novel nondiffusible cyan dye-releasing compounds and precursors thereof | James A. Reczek | 1984-10-09 |
| 4436799 | Photographic products and processes employing novel nondiffusible magenta dye-releasing compounds and precursors thereof | Steven Evans | 1984-03-13 |
| 4420550 | Photographic products and processes employing novel nondiffusible magenta dye-releasing compounds and precursors thereof | Steven Evans | 1983-12-13 |
| 4419435 | Photographic products and processes employing 6-heterocyclylazo-3-pyridinol nondiffusible cyan dye-releasing compounds and precursors thereof | James A. Reczek | 1983-12-06 |
| 4183754 | Photographic products and processes employing nondiffusible 1-arylazo-4-isoquinolinol dye-releasing compounds | Derek D. Chapman, James A. Friday | 1980-01-15 |