Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8021459 | Method and apparatus for controlling metal separation | Aimo Järvinen, Kai Judin, Harri Natunen, Yrjo Oinonen | 2011-09-20 |
| 7615100 | Method for the precipation of silica in connection with zinc ore leaching | Sigmund Fugleberg, Pertti Pekkala, Marja Riekkola-Vanhanen | 2009-11-10 |