Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8524038 | Bleaching process of chemical pulp | Panu Tikka | 2013-09-03 |
| 8128784 | Bleaching process of chemical pulp | Panu Tikka | 2012-03-06 |
| 6544384 | Pretreatment of chips before cooking | Kaj Henricson, Hannu RÅMARK, Auvo Kettunen, C. Bertil Stromberg | 2003-04-08 |
| 6506283 | Pretreatment of chips before cooking | Kaj Henricson, Hannu RÅMARK, Auvo Kettunen, C. Bertil Stromberg | 2003-01-14 |
| 6248208 | Pretreatment of chips before cooking | Kaj Henricson, Hannu RÅMARK, Auvo Kettunen, C. Bertil Stromberg | 2001-06-19 |
| 5635026 | Cooking cellulose material with high alkali concentrations and/or high pH | Auvo Kettunen, Kaj Henricson, Jian E. Jiang, Bruno Marcoccia | 1997-06-03 |
| 4971658 | Method of intensifying the washing of a fiber suspension | Kaj Henricson, Olavi Pikka, Nils-Erik Virkola | 1990-11-20 |