Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4629506 | Process for the production of ferrochromium | Klaus Ulrich, Wilhelm Janssen, Thomas Hoster, Hermann Doerr, Dietrich Radke | 1986-12-16 |
| 4576638 | Process for the production of ferromanganese | Hermann Doerr, Thomas Hoster, Dietrich Radke, Wilhelm Janssen, Klaus Ulrich | 1986-03-18 |