Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6033832 | Process for the production of a photographic image | — | 2000-03-07 |
| 6013420 | Chromogenic process for the production of color images using a color photographic recording material, which contains embedded color developer compounds that can be activated by heat treatment | Gunther Schenk | 2000-01-11 |
| 5441861 | Color photographic silver halide material | Beate Weber, Gunter Helling, Klaus Walz, Markus Geiger, Jorg Hagemann | 1995-08-15 |
| 5200301 | Color photographic recording material | Wolfgang Schmidt | 1993-04-06 |
| 4894312 | Dye diffusion process with base precursor salts of strong organic bases and weak organic acids | Holger Ohst, Carlhans Suling, Gunther Schenk, Manfred Peters, Immo Boie | 1990-01-16 |
| 4877722 | Color photographic recording material developable by heat | Manfred Peters, Manfred Becker, Thomas Kaluschke, Sieghart Klotzer | 1989-10-31 |
| 4847179 | Photographic dye diffusion transfer process and color photographic recording material suitable for this process | Immo Boie, Manfred Peters, Wolfgang Himmelmann, Thomas Kaluschke, Gunther Schenk +1 more | 1989-07-11 |
| 4840871 | Color photographic heat development process | Manfred Peters, Hans hlschlager, Thomas Kaluschke, Gunther Schenk, Immo Boie | 1989-06-20 |
| 4810615 | Colour photographic recording material containing a dye releasing compound for cyan dyes and a colour image produced with these dyes | Immo Boie, Hans Vetter | 1989-03-07 |
| 4407929 | Color photographic recording material for the production of colored images by the dye diffusion transfer process | Immo Boie | 1983-10-04 |
| 4353972 | Light-sensitive photographic material comprising polymeric mordant layer | Gunter Helling, Wolfgang Himmelmann, Manfred Beck | 1982-10-12 |