Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE36297 | Method and apparatus for treating a fiber suspension | Raimo Kohonen, Erkki Savolainen | 1999-09-14 |
| 5267655 | Method and apparatus for treating a gas containing aqueous fiber suspension | Kaj Henricson, Pasi Immonen, Raimo Kohonen, Erikki Savolainen, Pentti Vikio | 1993-12-07 |
| 5264138 | Method and apparatus for treating a fiber suspension | Raimo Kohonen, Erkki Savolainen | 1993-11-23 |
| 5160434 | Filter cylinder with drainage surface | Raimo Kohonen | 1992-11-03 |