Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6395242 | Production of zinc oxide from complex sulfide concentrates using chloride processing | Carole Allen, Peter Kondos, Serge Payant, Anthonie Van Sandwijk | 2002-05-28 |
| 5013359 | Process for recovering gold from refractory sulfidic ores | Kenneth J. Fair, John C. Schneider | 1991-05-07 |
| 4834793 | Oxidation process for releasing metal values in which nitric acid is regenerated in situ | John C. Schneider, Kenneth J. Fair | 1989-05-30 |