Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5536368 | Method and apparatus for mixing a first medium to a second medium and a bleaching process applying said method | Toivo Niskanen, Kari Peltonen | 1996-07-16 |
| 5258100 | Minimizing gas separation in a mixer outlet | Toivo Niskanen, Brian F. Greenwood, Kari Peltonen, Stephen J. Dunn | 1993-11-02 |
| 5156750 | Method and apparatus for thickening a fiber suspension and removing fine particles therefrom | Kaj Henricson, Toivo Niskanen, Olavi Pikka, Vesa Vikman | 1992-10-20 |
| 4975204 | Method and apparatus for thickening fiber suspension | Kaj Henricson, Toivo Niskanen, Olavi Pikka, Vesa Vikman | 1990-12-04 |