Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5514331 | Method and device for producing stainless steel | Matti E. Honkaniemi, Jorma Kemppainen, Risto Pellikka, Eero Rattya | 1996-05-07 |
| 4478802 | Method for cleaning cyanide-bearing gas scrubbing waters produced in metallurgical industry | Matti E. Honkaniemi, Veli Keinanen, Urpo J. Mansikka | 1984-10-23 |