Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10400344 | Apparatus for protection of anodes and cathodes in a system of electrolysis cells | Duncan Grant, Michael H. Barker, Henri Virtanen, Ari Rantala, Lauri Nordlund | 2019-09-03 |
| 10316389 | Hydrometallurgical treatment of anode sludge | Henri Virtanen | 2019-06-11 |