Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4360503 | Recovery of tungsten values from alkali tungstate solutions by solvent extraction | Carl Boyer, James N. Christini | 1982-11-23 |
| 4353881 | Tungsten recovery from tungsten ore concentrates by caustic digestion | Lucretia R. Quatrini, Brice E. Martin | 1982-10-12 |