Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6755890 | Method for reducing non-ferrous metal content in slag in the production of non-ferrous metals occurring in suspension smelting furnace | Ilkka Kojo, Risto Saarinen | 2004-06-29 |
| 5772955 | Apparatus for suspension smelting | Risto Saarinen, Erkki Krogerus, Ilkka Kojo | 1998-06-30 |
| 5565016 | Method for suspension smelting | Risto Saarinen, Erkki Krogerus, Iikka Kojo | 1996-10-15 |
| 5492554 | Method for producing high-grade nickel matte from at least partly pyrometallurgically refined nickel-bearing raw materials | Risto Saarinen, Olli Saarinen | 1996-02-20 |