Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12331835 | Method and arrangement for washer seal control | Mikko Pesonen, Jarkko Hytönen, Simo Karjalainen | 2025-06-17 |
| 12139878 | Arrangement for tilting or turning a working instrument | Asko Toropainen, Tuomo Sihvo, Simo Toropainen | 2024-11-12 |
| 7229527 | Method for the controlled thickening of low consistency fiber suspensions | Antero Laine, Risto Ljokkoi, Olavi Pikka, Sami Siik | 2007-06-12 |
| 6767432 | Apparatus for the thickening of fiber suspensions | Antero Laine, Risto Ljokkoi, Olavi Pikka, Sami Siik | 2004-07-27 |
| 6461473 | Supply of washing liquid in a fractionating multi-stage washer | Pekka Tervola | 2002-10-08 |
| 6159338 | Supply of washing liquid in a fractionating multi-stage washer | Pekka Tervola | 2000-12-12 |
| 6086713 | Method of treating pulp | Pekka Tervola | 2000-07-11 |
| 5139671 | Apparatus for treating pulp | Kaj Henricson, Seppo K. Kokkonen, Olavi Pikka, Erkki A. Ruuskanen, Erkki Savolainen | 1992-08-18 |
| 5116423 | Apparatus for washing pulp | Seppo K. Kokkonen | 1992-05-26 |
| 4952314 | Apparatus for treating pulp | Kaj Henricson, Seppo K. Kokkonen, Olavi Pikka, Erkki A. Ruuskanen, Erkki Savolainen | 1990-08-28 |
| 4919158 | Method and apparatus for washing pulp | Seppo K. Kokkonen | 1990-04-24 |
| 4795170 | Packing arrangement for sealing the surface of a rotary drum like object | Seppo K. Kokkonen, Erkki A. Ruuskanen | 1989-01-03 |
| 4769986 | Apparatus for washing cellulose with a rotary drum | Seppo K. Kokkonen | 1988-09-13 |