Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8167133 | Flotation cell | Erkka Nieminen, Vesa Harju | 2012-05-01 |
| 7318880 | Method for defibring recycled fiber material in a drum pulper, and a drum pulper | — | 2008-01-15 |
| 7282114 | Method for processing pulp | — | 2007-10-16 |
| 5704559 | Refining element | Per Froberg, Juha Makivaara | 1998-01-06 |