Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4329170 | Method of treating sulfur-containing metallurgical materials | Uwe Hansen, Michael Kopke | 1982-05-11 |
| 4200265 | Furnace for the melting and refining of copper | Gerhard Berndt, Gerhard Kapell, Jens U. Hansen | 1980-04-29 |