Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6761749 | Method for the production of blister copper in suspension reactor | Jaakko Poijärvi | 2004-07-13 |
| 6096110 | Method for cleaning slag in an electric furnace | — | 2000-08-01 |
| 4818289 | Method for utilizing slag from metal production | — | 1989-04-04 |
| 4699656 | Deoxidation of molten copper | — | 1987-10-13 |
| 4530311 | Waste heat boiler construction | — | 1985-07-23 |
| 4491952 | Electric furnace dome | Matti E. Honkaniemi, Martti Jankkila, Aimo Nurminen, Matias Virta, Veikko Iisakka +3 more | 1985-01-01 |