Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Keijo Raak | Ahlstrom Machinery | 3 |
| 2 | Jorma Nieminen | A. Ahlstrom | 2 |
| 3 | Samuli Nikkanen | A. Ahlstrom | 1 |
| 3 | Pekka Nyyssonen | — | 1 |
| 3 | Markku Tanttu | — | 1 |
| 3 | Juha Palonen | Foster Wheeler Energia Oy | 1 |
| 3 | Eero Berg | A. Ahlstrom | 1 |