Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6719145 | Arrangement and rotor for screening of pulp | Pasi Harkonen, Pekka Karppinen, Ari Pelkiö, Kader Rahkonen, Riitta Rahkonen | 2004-04-13 |
| RE36297 | Method and apparatus for treating a fiber suspension | Jukka Heino, Erkki Savolainen | 1999-09-14 |
| 5641402 | Multistage disc filter | Ari Pelkiö | 1997-06-24 |
| 5267655 | Method and apparatus for treating a gas containing aqueous fiber suspension | Jukka Heino, Kaj Henricson, Pasi Immonen, Erikki Savolainen, Pentti Vikio | 1993-12-07 |
| 5264138 | Method and apparatus for treating a fiber suspension | Jukka Heino, Erkki Savolainen | 1993-11-23 |
| 5240621 | Method and apparatus for improving flotation separation | Jorma Elonen, Harry Erlund, Kaj Henricson, Pasi Immonen, Heikki Manninen +3 more | 1993-08-31 |
| 5227058 | Apparatus for removing liquid from the thickeners, filters, and washers | Pasi Immonen | 1993-07-13 |
| 5160434 | Filter cylinder with drainage surface | Jukka Heino | 1992-11-03 |
| 5073264 | Apparatus for treating fiber suspension | Pasi Immonen | 1991-12-17 |
| 4943372 | Method and apparatus of discharging a disc filter | — | 1990-07-24 |
| 4687583 | Procedure for filtering lime sludge meant to be regenerated to lime | Matti Lankinen, Holger Engdahl, Jukka Niskanen, Markku Kosonen | 1987-08-18 |
| 4678574 | Disc filter | Tapani Niiranen, Erkki Savolainen | 1987-07-07 |
| 4354934 | Filter press | — | 1982-10-19 |
| 4292123 | Procedure and apparatus for cellulose washing | Tuomo Lintunen | 1981-09-29 |