Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4552632 | Hydrometallurgical method of extraction of copper from sulphide-containing material | Einar Andersen | 1985-11-12 |
| 4465569 | Method of producing zinc from chloride solutions which contain chiefly iron, copper and zinc | Arne Bjune, Tore Danielssen | 1984-08-14 |
| 4421616 | Method of producing zinc from chloride solutions which contain chiefly iron, copper and zinc | Arne Bjune, Tore Danielssen | 1983-12-20 |