Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5707490 | Method of recovering energy from waste liquors from pulp processes | Samuli Nikkanen | 1998-01-13 |
| 5509997 | Method of recovering energy from waste liquors from pulp processes | Samuli Nikkanen | 1996-04-23 |
| 5201172 | Method for treating black liquor | Bertel K. Hakulin, Erkki Kiiskila | 1993-04-13 |