Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5013359 | Process for recovering gold from refractory sulfidic ores | Gezinus Van Weert, John C. Schneider | 1991-05-07 |
| 4834793 | Oxidation process for releasing metal values in which nitric acid is regenerated in situ | John C. Schneider, Gezinus Van Weert | 1989-05-30 |