Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4360502 | Recovery of tungsten values from alkali tungstate solutions by solvent extraction | Martin B. MacInnis, Tai K. Kim | 1982-11-23 |
| 4338126 | Recovery of tungsten from heavy metal alloys | Clarence D. Vanderpool | 1982-07-06 |