Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4325739 | Magnetic metal and alloy pigments | Hans-Peter Biermann, Helmut Steinberger, Artur Botta, Rolf Naumann, Lutz Leitner | 1982-04-20 |
| 4311815 | Process for the production of moldings based on polyurethanes | — | 1982-01-19 |