Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4458009 | Process for the production of color photographic images and photographic recording materials | Edith Weyde, Wilhelm Saleck, Hubertus Psaar, Hans hlschlager | 1984-07-03 |
| RE31514 | Photographic material containing a stabilizer | Gerhard Jager, Armin Voigt, Karl H. Buchel | 1984-01-31 |
| 4397942 | Photographic material, process for the production thereof, process for the production of photographic images and new compounds | Franz Moll, Hermann Oediger | 1983-08-09 |
| 4396707 | Photographic material, process for the production thereof, process for the production of photographic images and new triazoles | Werner Liebe, Wilhelm Saleck | 1983-08-02 |
| 4366231 | Photographic material containing a stabilizer, a process for its production, a development process, new pyrazoles, a process for their production and intermediate products | Karl Heinrich Mayer, Klaus Sasse | 1982-12-28 |
| 4358531 | Photographic material, process for the production thereof and process for the production of photographic images | Franz Moll, Lothar Rosenhahn | 1982-11-09 |
| 4307186 | Photographic emulsion with stabilizer process for its preparation, photographic materials and process for the production of photographic images | Luc A. De Brabandere, Herbert Gernet, Herman A. Philippaerts | 1981-12-22 |
| 4277557 | Photographic material containing a stabilizing agent | Gerhard Jager, Werner Liebe, Armin Voigt | 1981-07-07 |
| 4260674 | Silver salt photographic material for the production of silver and bubble photographic images with 80% transparency | Edith Weyde, Werner Liebe | 1981-04-07 |
| 4256830 | Photographic material containing a stabilizer | Gerhard Jager, Armin Voigt, Karl H. Buchel | 1981-03-17 |
| 4210714 | Photographic material with improved properties | Heinrich Odenwalder, Franz Moll, Walter Patzold, Lothar Rosenhahn, Friedhelm Sommer | 1980-07-01 |
| 4209583 | Corrosion preventative for two-bath stabilizer baths | Werner Berthold, Artur Botta, Christian Rasp | 1980-06-24 |
| 4202695 | Photographic Lippmann emulsions | Herman A. Philippaerts, Robert J. Pollet, Wolfgang Muller-Bardorff, Wilhelm Saleck, Walter Gauss +2 more | 1980-05-13 |