Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5492554 | Method for producing high-grade nickel matte from at least partly pyrometallurgically refined nickel-bearing raw materials | Pekka Hanniala, Risto Saarinen | 1996-02-20 |
| 4646494 | Building panel and system | Paavo Tihverainen, Seppo Rinne, Lauri Mehto | 1987-03-03 |