Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6169599 | Method for determining the amount of light in each primary color when copying a colored original | Helmut Treiber, Wolfgang Zahn | 2001-01-02 |
| 6037109 | Device and method for reproducing originals onto light-sensitive material | Markus Fuessel, Friedrich Jacob, Gudrun Taresch | 2000-03-14 |
| 5943120 | Method and apparatus for making photographic prints from negatives | Matthias Maendl | 1999-08-24 |
| 5781276 | Printing of color film | Wolfgang Zahn, Klaus Hartmann | 1998-07-14 |
| 5461458 | Method of automatically controlling exposure when making prints from film from portrait-photography studios | Wolfgang Zahn | 1995-10-24 |