Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5215875 | Color photographic recording material | Reinhart Matejec, Heinrich Odenwalder | 1993-06-01 |
| 5200306 | Color photographic recording material containing a coupler which releases a photographically active compound | Heinrich Odenwalder, Peter Bergthaller, Dirk Hubner | 1993-04-06 |
| 5037731 | Organic compounds for use in a dye diffusion transfer process and photographic elements incorporating them | Christian C. Van de Sande, Luc Vanmaele, Armand M. Van den Bergh, Wilhelmus Janssens | 1991-08-06 |
| 5021332 | Color photographic recording material containing a DIR coupler | Peter Bergthaller, Thomas Krüger, Heinrich Odenwalder | 1991-06-04 |
| 5021331 | Color photographic recording material containing a DIR coupler | Heinrich Odenwalder, Peter Bergthaller, Thomas Krüger | 1991-06-04 |
| 5006457 | Photographic recording material | Hans hlschlager, Heinrich Odenwalder, Bernhard Morcher, Friedhelm Sommer, Lothar Rosenhahn | 1991-04-09 |
| 4810615 | Colour photographic recording material containing a dye releasing compound for cyan dyes and a colour image produced with these dyes | Immo Boie, Kaspar Wingender | 1989-03-07 |
| 4784507 | Filing device for layers of sheets | — | 1988-11-15 |
| 4777124 | Azo dye compounds for use in a dye diffusion transfer process and photographic elements incorporating them | Luc Vanmaele, Christian C. Van de Sande, Wilhelmus Janssens | 1988-10-11 |
| 4755452 | Color photographic recording material and a process for the production of photographic images | Werner Liebe | 1988-07-05 |
| 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, Armand M. Van den Bergh, Wilhelmus Janssens | 1986-08-12 |
| 4360581 | Color photographic recording material containing non-diffusing electron donor compounds | Heinrich Odenwalder, Wilhelmus Janssens, Jan Jaeken | 1982-11-23 |
| 4302123 | Clasp element | Wolfgang Dengler | 1981-11-24 |
| 4273855 | Photographic diffusion transfer process and material for the production of color images and suitable compounds therefor | Jan Jaeken, Andre Verhecken, Paul Marx | 1981-06-16 |
| 4250252 | Light-sensitive color photographic material | Heinrich Odenwalder, Walter Puschel, Erwin Ranz | 1981-02-10 |
| 4242435 | Photographic dye diffusion transfer process | Walter Puschel, Paul Marx | 1980-12-30 |
| 4198235 | Dye diffusion transfer process employing compounds that release sulfonamide dye providing radicals | Walter Puschel, Arnfried Melzer, Manfred Peters | 1980-04-15 |