Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7871504 | Method for forming an electrocatalytic surface on an electrode and the electrode | Michael H. Barker, Karri Osara | 2011-01-18 |
| 7799114 | Method for recovering gold | Liisa Haavanlammi, Marika Tiihonen, Reijo Tontti | 2010-09-21 |
| 7785395 | Method for the recovery of gold from sulphide concentrate | Jaakko Leppinen, Seppo Heimala, Veikko Palosaari, Matti Hämäläinen | 2010-08-31 |
| 7776135 | Method for the recovery of gold | Matti Hämäläinen | 2010-08-17 |
| 7749302 | Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metals | Stig-Erik Hultholm | 2010-07-06 |
| 7670575 | Method and device for treating anode slime | Olli Jarvinen, Pekka Taskinen, Henri Virtanen, Leo Lindroos | 2010-03-02 |
| 7559971 | Method for removal of silver from a copper chloride solution | Marika Jyrälä | 2009-07-14 |
| 7547348 | Method for the recovery of metals using chloride leaching and extraction | Stig-Erik Hultholm | 2009-06-16 |
| 7386936 | Method for manufacturing in electrically conductive pattern | Lauri Huhtasalo, Samuli Strömberg, Marko Hanhikorpi, Pekka Taskinen, Tuija Suortti | 2008-06-17 |
| 6861037 | Method of removal of impurities from gold concentrate containing sulfides | Raimo Leimala | 2005-03-01 |
| 6007600 | Method for producing copper in hydrometallurgical process | Matti Hämäläinen | 1999-12-28 |
| 5009870 | Method for removing sulphur and nitrogen compounds from gas | Seppo Heimala, Maija-Leena Metsarinta | 1991-04-23 |
| 4474654 | Method for removing arsenic from a sulphuric-acid solution | — | 1984-10-02 |
| 4473396 | Procedure for roasting seleniferous material | Leo Lindroos, Eino A. Rosenberg | 1984-09-25 |