Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9328400 | Treatment of manganese-containing materials | William F. Drinkard, Jr., Hans J. Woerner | 2016-05-03 |
| 9284627 | Process for recovering metal values from oxides of manganese-containing materials | William F. Drinkard, Jr., Hans J. Woerner | 2016-03-15 |