Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5037731 | Organic compounds for use in a dye diffusion transfer process and photographic elements incorporating them | Hans Vetter, Christian C. Van de Sande, Luc Vanmaele, Wilhelmus Janssens | 1991-08-06 |
| 4663273 | Non-diffusing compounds capable of releasing a diffusible dye or dye precursor compound with multiple dye units | Christian C. Van de Sande, Andre Verhecken | 1987-05-05 |
| 4605613 | Ballasted dye compounds with linkages containing three aromatic nuclei for use in a dye diffusion transfer process and element | Christian C. Van de Sande, Wilhelmus Janssens, Hans Vetter | 1986-08-12 |
| 4483915 | Azo dye releasing compounds with hydrolytic removable group for dye diffusion transfer process | Christian C. Van de Sande, Wilhelmus Janssens | 1984-11-20 |