Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4788133 | Color photographic recording material | Gunter Renner, Sieghart Klotzer, Jens-Peter Grimm | 1988-11-29 |
| 4571378 | Color photographic recording material and development process | Erwin Ranz, Heinz-Dieter Schutz | 1986-02-18 |
| 4427763 | Photographic recording material with a precursor compound for a yellow mask | Joachim W. Lohmann, Gunter Renner | 1984-01-24 |
| 4287299 | Process for the production of matting layers | Wolfgang Himmelmann, Rolf Brück, Peter Kruck, Gunter Kolb, Gunter Sackmann | 1981-09-01 |
| 4276373 | Photosensitive photographic material containing a light-absorbing dye | Hans Ohlschlager, Lothar Rosenhahn | 1981-06-30 |
| 4233398 | Process for the hardening of photographic layers utilizing fast acting hardener and polysaccharide | Fritz Nittel, Karl Czernik, Wolfgang Himmelmann, Peter Bergthaller | 1980-11-11 |