Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7785395 | Method for the recovery of gold from sulphide concentrate | Jaakko Leppinen, Olli Hyvärinen, Seppo Heimala, Veikko Palosaari | 2010-08-31 |
| 7776135 | Method for the recovery of gold | Olli Hyvärinen | 2010-08-17 |
| 7294168 | Method for purifying the solution in the hydrometallurgical processing of copper | — | 2007-11-13 |
| 6929677 | Method for leaching copper concentrate | — | 2005-08-16 |
| 6712874 | Method for the reduction of nickel from an aqueous solution | Sigmund Fugleberg, Kari Knuuttila | 2004-03-30 |
| 6702871 | Method for the reduction of nickel | Sigmund Fugleberg, Kari Knuutila | 2004-03-09 |
| 6007600 | Method for producing copper in hydrometallurgical process | Olli Hyvärinen | 1999-12-28 |
| 5395595 | Fluidized bed reactor | — | 1995-03-07 |
| 4208380 | Process for the recovery of cobalt from its impure, aqueous, in particular nickel-bearing, solutions and catalyst therefor | Jussi K. Rastas, Heikki A. Tiitinen, Tom O. Niemi | 1980-06-17 |