Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6894199 | Process for the production of xylitol | Heikki Heikkila, Heikki Ojamo, Matti Tylli, Vili Ravanko, Juha Nurmi +2 more | 2005-05-17 |
| 6262318 | Method of producing polyols from arabinoxylan-containing material | Heikki Heikkila, Siru Kauko, Mirja Lindroos, Juha Nurmi, Paivi Sarmala +1 more | 2001-07-17 |
| 5032223 | Procedure for determining and controlling the composition proportions of wood chip mixes in alkaline pulp digestion processes | Pasi Hentunen, Leena Paavilainen, Eero Sjostrom, Taina Sopenlehto-Pehkonen, Olavi Sundstrom | 1991-07-16 |
| 4853084 | Method for controlling alkaline pulping process | Eero Sjostrand | 1989-08-01 |