Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5139671 | Apparatus for treating pulp | Kaj Henricson, Seppo K. Kokkonen, Olavi Pikka, Harri Qvintus, Erkki Savolainen | 1992-08-18 |
| 4952314 | Apparatus for treating pulp | Kaj Henricson, Seppo K. Kokkonen, Olavi Pikka, Harri Qvintus, Erkki Savolainen | 1990-08-28 |
| 4795170 | Packing arrangement for sealing the surface of a rotary drum like object | Seppo K. Kokkonen, Harri Qvintus | 1989-01-03 |
| 4202505 | Refiner | — | 1980-05-13 |