Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8815053 | Method of treating liquid flows at a chemical pulp mill | Janne Vehmaa, Olavi Pikka | 2014-08-26 |
| 8632655 | Method in connection with the washing of pulp at a chemical pulp mill | Janne Vehmaa, Olavi Pikka | 2014-01-21 |
| 8632656 | Method for treating liquid flows at a chemical pulp mill | Janne Vehmaa, Olavi Pikka | 2014-01-21 |
| 8632657 | Method for treating liquid flows at a chemical pulp mill | Janne Vehmaa, Olavi Pikka | 2014-01-21 |
| 8277608 | Method for treating pulp in connection with the bleaching of chemical pulp | Kaj Henricson, Olavi Pikka | 2012-10-02 |
| 8052839 | Apparatus and method for washing pulps | Olavi Pikka, Hannu Ronkonharju | 2011-11-08 |
| 6461473 | Supply of washing liquid in a fractionating multi-stage washer | Harri Qvintus | 2002-10-08 |
| 6159338 | Supply of washing liquid in a fractionating multi-stage washer | Harri Qvintus | 2000-12-12 |
| 6086713 | Method of treating pulp | Harri Qvintus | 2000-07-11 |
| 5660686 | Cooking with spent liquor pretreatment of cellulose material | Kaj Henricson | 1997-08-26 |