Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5110715 | Photographic reversal process | Ubbo Wernicke, Werner Berthold, Gustav Tappe | 1992-05-05 |
| 5004676 | Process for the production of color photographic images comprising replenishing the developing solution | Heinz Meckl, Sieghart Klotzer, Erich Wolff | 1991-04-02 |
| 4987059 | Process for stabilizing photographic silver images | Werner Berthold, Paul Marx, Heinz Meckl, Hans hischlager | 1991-01-22 |
| 4939075 | Bleaching baths containing bleaching accelerators | Peter Bergthaller, Heinz Meckl | 1990-07-03 |
| 4933264 | Process for processing a color photographic material | Heinz Meckl, Gustav Tappe | 1990-06-12 |
| 4636460 | Photographic recording material and process for the production of photographic images | Heinz Meckl, Helmut Kampfer | 1987-01-13 |
| 4615971 | Photographic developer composition | — | 1986-10-07 |
| 4376216 | Process for the purification of photographic developer substances | — | 1983-03-08 |
| 4297438 | Color-photographic development process | Heinz Meckl, Karl Lohmer, Willibald Pelz | 1981-10-27 |
| 4264717 | Color photographic material and color photographic processes | Fritz Nittel | 1981-04-28 |
| 4204867 | Process for the production of color photographic images using new white coupler substances | Karl Kuffner, Wolfgang Lassig, Ernst Meier, Immo Boie, Gertrud Kirchhoff +1 more | 1980-05-27 |