Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5374505 | Color photographic recording material for the production of color images | Jurgen Heinecke, Helmut Mader, Hans hlschlager, Armin Voigt | 1994-12-20 |
| 5292628 | Photographic silver halide element with gelatin layer containing silica | Heinz-Gunther Auweiler, Manfred Peters, Hartmut Randolph | 1994-03-08 |
| 4906560 | Photographic material | Wolfgang Himmelmann, Rudolf Tromnau, Erich Muller | 1990-03-06 |
| 4810625 | Photographic material with pyrazolone coupler and oil former | Klaus Wagner, Johannes Sobel | 1989-03-07 |
| 4603102 | Photographic silver halide recording material with cellulose dicarboxylic acid semiester particles in outer layer | Wolfgang Himmelmann, Rudolf Meyer, Lothar Rosenhahn | 1986-07-29 |
| 4582783 | Photographic silver halide material containing an antistatic layer | Bert Sauter, Armin Voigt | 1986-04-15 |
| 4464464 | Color photographic recording material | Reinhart Matejec, Johannes Sobel | 1984-08-07 |
| 4419441 | Dispersion process | Helmut Mader | 1983-12-06 |
| 4368259 | Color photographic recording material containing an emulsified, hydrophilic color-forming compound | Hans Langen, Erwin Ranz | 1983-01-11 |
| 4264717 | Color photographic material and color photographic processes | Helmut Haseler | 1981-04-28 |
| 4233398 | Process for the hardening of photographic layers utilizing fast acting hardener and polysaccharide | Karl Czernik, Wolfgang Sauerteig, Wolfgang Himmelmann, Peter Bergthaller | 1980-11-11 |