Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4664749 | Method of washing cellulosic pulp submerged in washing liquid | Pertti Haapamaki | 1987-05-12 |
| 4529479 | Method for multistage bleaching and washing with recycle of displaced bleaching liquor | — | 1985-07-16 |
| 4343708 | Method and equipment for thickening of suspension or pulp | Mikko Rantanen, Reino Laiho | 1982-08-10 |