Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5163235 | Apparatus for washing out photopolymer printing plates by means of solvents, drying the printing plates and recovering the solvents | Horst Hoffmann, Rolf Schwan | 1992-11-17 |
| 5084319 | Disk-shaped magnetic recording media, their production and information stores containing these recording media | Hartmut Hibst, Arend Werner, Joachim Hack, Heinrich Mannsperger, Michael Hitzfeld +2 more | 1992-01-28 |
| 4822327 | Jacket for a flexible magnetic disk and production of the jacket | Bernhard Lenz, Kurt Zwintzscher, Dietrich Gruehn, Hubert Fehrenbach | 1989-04-18 |
| 4796137 | Protective jacket for a disk-shaped recording medium | Dietrich Gruehn, Joachim Hack, Hubert Fehrenbach, Peter Rudolf | 1989-01-03 |
| 4733452 | Production of jackets for flexible magnetic disks, and apparatus for this purpose | Bernhard Lenz, Dietrich Gruehn, Kurt Zwintzscher | 1988-03-29 |
| 4688129 | Protective jacket for a disk-shaped recording medium | Dietrich Gruehn, Hubert Fehrenbach | 1987-08-18 |