Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4328330 | Process for the production of polyureas | Wolfgang Wellner, Hermann Gruber | 1982-05-04 |
| 4325739 | Magnetic metal and alloy pigments | Hans-Peter Biermann, Helmut Steinberger, Rolf Naumann, Lutz Leitner, Heinrich Heine | 1982-04-20 |