Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672200 | Pigment preparation and its use | Dieter Heinz, Joachim Weitzel | 1997-09-30 |
| 5445671 | Offset printing ink | Gerhard Herget, Wolfgang Hechler, Brigitte Husseini, Rudiger Smolka | 1995-08-29 |
| 4515375 | Process and arrangement for sealing the gap between the ends of a gravure printing plate mounted on a printing cylinder | Gerhard Bleckmann, John Lynch | 1985-05-07 |
| 4326434 | Process for underlaying a flat-bed steel rule die | Walter Hoffmann, Rudolf Vyvial | 1982-04-27 |