Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6720992 | Method for improving the contrast reproduction of digitized images | Wolfgang Zahn | 2004-04-13 |
| 6529243 | Method for electronic reduction of the contrast of video images as early as during recording | Wolfgang Zahn | 2003-03-04 |
| 5798821 | Copying of film under different conditions | Wolfgang Zahn | 1998-08-25 |
| 5081486 | Process for the preparation of photographic color copies from copy masters | Walter Kraft | 1992-01-14 |
| 5016043 | Exposure control process and photographic color copying apparatus | Walter Kraft | 1991-05-14 |
| 4951084 | Photographic color copying apparatus and exposure control process | Walter Kraft | 1990-08-21 |
| 4459018 | Device for singling out non-reproducible copies fed in a photographic printer | Wolfgang Zahn, Wilfried Rauskolb | 1984-07-10 |
| 4403854 | Method and apparatus for making color prints in automatic dependence upon the film type involved | Berthold Fergg | 1983-09-13 |
| 4264196 | Method and apparatus for making color prints in automatic dependence upon the film type involved | Berthold Fergg | 1981-04-28 |