Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6689191 | Rapid conversion of metal-containing compounds to form metals or metal alloys | Stephen D. Dunmead, Alan W. Weimer, Karen Buechler, Jacob Johnson | 2004-02-10 |
| 4474735 | Process for the recovery of valuable metals from spent crude-oil sulfur-extraction catalysts | Jussi K. Rastas, Heikki A. Tiitinen | 1984-10-02 |
| 4362702 | Hydrometallurgical process for the treatment of a raw material which contains oxide and ferrite of zinc, copper and cadmium | Jussi K. Rastas, Jens Nyberg, Lars-Goran Bjorkqvist | 1982-12-07 |