Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4391884 | Process for the production of a photographic color image by the silver dye bleach process and suitable color photographic material therefor | Armin Meyer | 1983-07-05 |
| 4310617 | Process for the production of masked positive color images by the silver dye bleach process | Herbert Mollet, Alfred Oetiker | 1982-01-12 |