Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4901254 | Method and apparatus for influencing the colour appearance of a colored area in a printing process | Karl-Heinz Besson | 1990-02-13 |
| 4451497 | Process for the pretreatment of photographic substrates | Gunther Koepke, Ulrich Rendelmann | 1984-05-29 |