Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11993895 | Method of feeding wood chips to a prehydrolysis reactor | Marco Andrade, Ronny GEIGER, Vesa KAIPAINEN, Petri Tarjavuori, Viridiane Vianna | 2024-05-28 |
| 10240287 | Heating of hydraulic digesters | Pasi Heinämäki, Kari Peltonen, Hannu RÅMARK | 2019-03-26 |
| 9163358 | Method and assembly for processing cellulose pulp of wood processing industry | — | 2015-10-20 |
| 6544384 | Pretreatment of chips before cooking | Kaj Henricson, Aki Vilpponen, Hannu RÅMARK, C. Bertil Stromberg | 2003-04-08 |
| 6524436 | Flash tank steam economy improvement | Matti Lautala | 2003-02-25 |
| 6506283 | Pretreatment of chips before cooking | Kaj Henricson, Aki Vilpponen, Hannu RÅMARK, C. Bertil Stromberg | 2003-01-14 |
| 6368453 | Chip feeding to a comminuted cellulosic fibrous material treatment vessel | Richard O. Laakso, C. Bertil Stromberg, J. Robert Prough, Jay Miele | 2002-04-09 |
| 6350348 | Batch cooking with black liquor pretreatment | Kaj Henricson, Hannu RÅMARK | 2002-02-26 |
| 6346166 | Flash tank steam economy improvement | Matti Lautala | 2002-02-12 |
| 6248208 | Pretreatment of chips before cooking | Kaj Henricson, Aki Vilpponen, Hannu RÅMARK, C. Bertil Stromberg | 2001-06-19 |
| 5779856 | Cooking cellulose material using high alkali concentrations and/or high pH near the end of the cook | — | 1998-07-14 |
| 5635026 | Cooking cellulose material with high alkali concentrations and/or high pH | Kaj Henricson, Aki Vilpponen, Jian E. Jiang, Bruno Marcoccia | 1997-06-03 |