Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5900158 | Method and apparatus for thickening lime mud with a disc filter | Pekka Ruokolainen | 1999-05-04 |
| 4871459 | Filter bed clarifier | — | 1989-10-03 |
| 4612115 | Floating bed reactor | — | 1986-09-16 |
| 4608174 | Feed and accept duct system for hydrocyclones | Seppo K. Kokkonen, Antti Kuhasalo, Erkki Savolainen, Jorma Vento, Pentti Vikio | 1986-08-26 |
| 4324659 | Lime sludge press unit | — | 1982-04-13 |