Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5084319 | Disk-shaped magnetic recording media, their production and information stores containing these recording media | Hartmut Hibst, Arend Werner, Joachim Hack, Michael Hitzfeld, Werner Grau +2 more | 1992-01-28 |
| 5050015 | Method and arrangement for reducing wear in a magnetic storage means | Joachim Hack, Werner Grau, Werner Sickmueller, Helmut Jakusch | 1991-09-17 |