Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4360581 | Color photographic recording material containing non-diffusing electron donor compounds | Hans Vetter, Wilhelmus Janssens, Jan Jaeken | 1982-11-23 |
| 4310621 | Photosensitive photographic material, a process for the production of photographic images, development baths and new hydroquinones | Karl Frank, Reinhard Muller | 1982-01-12 |