Issued Patents All Time
Showing 76–100 of 101 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5324601 | Dyes and dye-donor elements for use in thermal dye transfer | Hans Junek, Renate Dworczak | 1994-06-28 |
| 5324621 | Dyes and dye-donor elements for thermal dye transfer recording | Wilhelmus Janssens | 1994-06-28 |
| 5314860 | Method of stabilizing a material for use in a thermal dye transfer imaging process | Wilhelmus Janssens | 1994-05-24 |
| 5246908 | Dyes for use in thermal dye transfer | Wilhelmus Janssens | 1993-09-21 |
| 5229353 | Thermal transfer printing with ultra-violet absorbing compound | Wilhelmus Janssens | 1993-07-20 |
| 5169828 | Black colored thermal dye sublimation transfer donor element | Wilhelmus Janssens | 1992-12-08 |
| 5142089 | Dyes and dye-donor elements for use in thermal dye sublimation transfer | — | 1992-08-25 |
| 5122499 | Thermal dye sublimation transfer printing method | Wilhelmus Janssens | 1992-06-16 |
| 5116806 | Dyes for use in thermal dye transfer | — | 1992-05-26 |
| 5084435 | Dye-donor element for use in thermal dye sublimation transfer | Wilhelmus Janssens | 1992-01-28 |
| 5082823 | Cyan dyes for use in thermal dye sublimation transfer | Wilhelmus Janssens | 1992-01-21 |
| 5043316 | Dye-donor element for use in thermal dye sublimation transfer | Wilhelmus Janssens | 1991-08-27 |
| 5037731 | Organic compounds for use in a dye diffusion transfer process and photographic elements incorporating them | Hans Vetter, Christian C. Van de Sande, Armand M. Van den Bergh, Wilhelmus Janssens | 1991-08-06 |
| 5026677 | Dyes and dye-donor elements for use in thermal dye sublimation transfer | — | 1991-06-25 |
| 5021393 | Cyan dyes in dye-donor elements for thermal dye transfer | Wilhelmus Janssens | 1991-06-04 |
| 5013628 | Particulate toner material with charge control agent | Piet Kok, Serge Tavernier, Hedwig E. De Deyne | 1991-05-07 |
| 4988600 | Particulate electrophotographic toner material | Piet Kok, Serge Tavernier | 1991-01-29 |
| 4987119 | Cyan dyes in dye-donor elements for use in thermal dye transfer methods | Wilhelmus Janssens | 1991-01-22 |
| 4985395 | Dye-donor element for thermal dye sublimation transfer | Christian C. Van de Sande | 1991-01-15 |
| 4912028 | Intramolecular nucleophilic displacement compound and use in photography | — | 1990-03-27 |
| 4871654 | Photographic element incorporating redox compounds for use in a dye diffusion transfer process | Christian C. Van de Sande | 1989-10-03 |
| 4855223 | Organic compounds for use in a dye diffusion transfer process and photographic elements incorporating them | Janssens Wilhelmus, Christian C. Van de Sande | 1989-08-08 |
| 4820608 | Dye diffusion transfer imaging process and image receptor used therein | Daniel A. Claeys, Daniel M. Timmerman, Antonius A. Rutges, Eddy Michiels, Piet Kok | 1989-04-11 |
| 4814255 | Mordanting polymers for acid dyes | Wilhelmus Janssens | 1989-03-21 |
| 4777124 | Azo dye compounds for use in a dye diffusion transfer process and photographic elements incorporating them | Christian C. Van de Sande, Wilhelmus Janssens, Hans Vetter | 1988-10-11 |