Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4604138 | Process for refining hot metal | Erich Hoffken, Wolfram Florin | 1986-08-05 |
| 4586955 | Process for desulphurizing hot metal | Walter Meichsner, Karl-Heinz Peters | 1986-05-06 |
| 4431444 | Process for reducing the iron content of CaO-rich slags formed during the desulphurization of crude iron | Walter Meichsner, Heinrich Rellermeyer | 1984-02-14 |