Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4597990 | Preparation of magnetic recording media | Hermann Roller, Joachim Hack, August Lehner, Werner Grau, Peter Nagel +1 more | 1986-07-01 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4597990 | Preparation of magnetic recording media | Hermann Roller, Joachim Hack, August Lehner, Werner Grau, Peter Nagel +1 more | 1986-07-01 |