Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4639269 | Method and apparatus for the reducing treatment of molten metals and/or slags thereof | Hermann Hilbrans, Gerhard Melcher, Friedrich Megerle | 1987-01-27 |
| 4497780 | Method and apparatus for removing arsenic from an arsenic-containing material | Ihsan Barin, Rolf Hesse, Soegianto Wirosoedirdio | 1985-02-05 |