Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6777072 | Magnetic recording medium | Stefan Mueller, Johannes Sandrock, Andrea Sturm, Albert Kohl, Benedikt Raether | 2004-08-17 |
| 5729414 | Recording disk having a non-magnetizable hub cover | Martina Effenberg | 1998-03-17 |