Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6547848 | Method for cooling the gas flow in a smelting furnace | Risto Saarinen | 2003-04-15 |
| 6180078 | Method for thermally regenerating spent acid | Jaakko Poijärvi, Johannes Holmi, Jari Ojala | 2001-01-30 |