Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4358527 | Photographic products employing nondiffusible metal-complexed azo dye-releasing compounds and precursors thereof | David Clarke, Linda G. Johnston | 1982-11-09 |
| 4338393 | Heterocyclic magenta dye-forming couplers | John Cook | 1982-07-06 |