Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8540950 | Method for the removal of chloride from zinc sulphate solution | Mikko Ruonala, Antti Arpalahti, Karoliina Lepistö | 2013-09-24 |
| 7811357 | Method for recovering rare metals in zinc leaching process | Marko Lahtinen, Mikko Ruonala, Stig-Göran Huldén, Sigmund Fugleberg | 2010-10-12 |