Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6150083 | Photograhic silver halide material and process for preparing silver images | Reinhold Ruger | 2000-11-21 |
| 6033825 | Silver-halide recording material to produce negatives with reduced fog and ultrahardgradation | Reinhold Ruger | 2000-03-07 |
| 6030744 | Silver-halide recording material with improved storage stability to produce negatives with ultrahard-gradation contrast | Reinhold Ruger | 2000-02-29 |