Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5201172 | Method for treating black liquor | Erkki Kiiskila, Marjo Kuusio | 1993-04-13 |
| 5154732 | Apparatus for gasifying or combusting solid carbonaceous | Jorma Nieminen | 1992-10-13 |
| 4929255 | Method for gasifying or combusting solid carbonaceous material | Jorma Nieminen | 1990-05-29 |
| 4616576 | Combustion method | Folke Engstrom, Seppo Ruottu | 1986-10-14 |