Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6235151 | Inhibiting scaling in alkaline waste liquor evaporators | Olof Fagerlind, Heikki Jaakkola | 2001-05-22 |
| 6146604 | Method of removing nitrogen oxides from recovery boiler flue gases | Pia Kilpinen, Kari Saviharju, Esa Vakkilainen | 2000-11-14 |
| 6090240 | Method of inhibiting scaling in black liquor evaporators | Henrik Eneberg, Jarmo Kaila | 2000-07-18 |
| 6030494 | Method of treating melodorous gases of a pulp mill | Mikko Hupa | 2000-02-29 |
| 5549788 | Minimal effluents discharge pulp mill with chemical recovery | Tuomo Nykanen, Brian F. Greenwood, Johan Gullichsen, Esko Mattelmaki, Joseph R. Phillips +4 more | 1996-08-27 |
| 5547543 | Apparatus for minimizing effluent discharges and recovering chemicals in a pulp mill | Tuomo Nykanen, Brian F. Greenwood, Johan Gullichsen, Esko Mattelmaki, Joseph R. Phillips +4 more | 1996-08-20 |
| 5518583 | Zero discharge mill distillation, salt recovery, and water management | Tuomo Nykanen, Brian F. Greenwood, Johan Gullichsen, Esko Mattelmaki, Joseph R. Phillips +4 more | 1996-05-21 |
| 5380402 | Reducing pulp mill liquid discharge | Rolf Ryham, Tuomo Nykanen, Brian F. Greenwood, Johan Gullichsen, Esko Mattelmaki +4 more | 1995-01-10 |
| 5374333 | Method for minimizing pulp mill effluents | Tuomo Nykanen, Brian F. Greenwood, Johan Gullichsen, Esko Mattelmaki, Joseph R. Phillips +4 more | 1994-12-20 |
| 5330621 | Continuous elemental analysis of process flows | Pertti Visuri, Markku J. Koskelo | 1994-07-19 |
| 5201172 | Method for treating black liquor | Bertel K. Hakulin, Marjo Kuusio | 1993-04-13 |
| 4929307 | Method of decreasing black liquor viscosity | Nils-Erik Virkola | 1990-05-29 |
| 4909899 | Method of concentrating sludges | — | 1990-03-20 |
| 4771712 | Combustion of fuel containing alkalines | Folke Engstrom, Pekka Tormikoski | 1988-09-20 |
| 4738835 | Method of recovering alkali chemicals from flue gases containing alkali metal vapor | — | 1988-04-19 |