Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5543128 | Regeneration method for process waste containing sulfur and phosphorus | Jorma Saari, Antti Roine, Hannu Holma, Matti Kalliokoski | 1996-08-06 |
| 4622677 | Method and device for clamping the electrode contact shoes around the electrode of an electric furnace | Kauko K. Rinne, Matti E. Honkaniemi, Risto M. Heikkila, Martti Jankkila | 1986-11-11 |
| 4491952 | Electric furnace dome | Matti E. Honkaniemi, Martti Jankkila, Aimo Nurminen, Matias Virta, Veikko Iisakka +3 more | 1985-01-01 |