Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871654 | Photographic element incorporating redox compounds for use in a dye diffusion transfer process | Luc Vanmaele | 1989-10-03 |
| 4855223 | Organic compounds for use in a dye diffusion transfer process and photographic elements incorporating them | Luc Vanmaele, Janssens Wilhelmus | 1989-08-08 |