Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826671 | Preparation of acicular .alpha.-Fe.sub.2 O.sub.3 | Volker Arndt, Rainer Feser, Helmut Jakusch | 1989-05-02 |
| 4810401 | Superparamagnetic solid particles | Gunther Mair | 1989-03-07 |