Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7736467 | Screen assembly for a pulp digester | Lasse Hernesniemi | 2010-06-15 |
| 5549788 | Minimal effluents discharge pulp mill with chemical recovery | Brian F. Greenwood, Johan Gullichsen, Erkki Kiiskila, Esko Mattelmaki, Joseph R. Phillips +4 more | 1996-08-27 |
| 5547543 | Apparatus for minimizing effluent discharges and recovering chemicals in a pulp mill | Brian F. Greenwood, Johan Gullichsen, Erkki Kiiskila, Esko Mattelmaki, Joseph R. Phillips +4 more | 1996-08-20 |
| 5518583 | Zero discharge mill distillation, salt recovery, and water management | Brian F. Greenwood, Johan Gullichsen, Erkki Kiiskila, Esko Mattelmaki, Joseph R. Phillips +4 more | 1996-05-21 |
| 5380402 | Reducing pulp mill liquid discharge | Rolf Ryham, Brian F. Greenwood, Johan Gullichsen, Erkki Kiiskila, Esko Mattelmaki +4 more | 1995-01-10 |
| 5374333 | Method for minimizing pulp mill effluents | Brian F. Greenwood, Johan Gullichsen, Erkki Kiiskila, Esko Mattelmaki, Joseph R. Phillips +4 more | 1994-12-20 |
| 5302246 | Method of managing liquid steams in a pulp mill | Jan T. Richardsen, Rolf Ryham | 1994-04-12 |