Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4366127 | Hydrometallurgical process for the recovery of lead, silver and gold, as well as zinc, from impure jarosite residues of an electrolytic zinc process | Jussi K. Rastas | 1982-12-28 |
| 4362702 | Hydrometallurgical process for the treatment of a raw material which contains oxide and ferrite of zinc, copper and cadmium | Jussi K. Rastas, Kauko Karpale, Lars-Goran Bjorkqvist | 1982-12-07 |