Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6582554 | Continuous digester having a sectioned top separator with multiple liquor extraction ports | C. Bertil Stromberg, Richard O. Laakso, John Bolles, Keith Vogel, Patrick Sullivan | 2003-06-24 |
| 6579411 | Bleaching medium consistency pulp with ozone | Torolf Laxen, Juhani Peltonen | 2003-06-17 |
| 6547923 | Process for bleaching medium consistency pulp with ozone using a pressurized fluidizing mixer | Torolf Laxen, Juhani Peltonen | 2003-04-15 |
| 6544384 | Pretreatment of chips before cooking | Aki Vilpponen, Hannu RÅMARK, Auvo Kettunen, C. Bertil Stromberg | 2003-04-08 |
| 6506283 | Pretreatment of chips before cooking | Aki Vilpponen, Hannu RÅMARK, Auvo Kettunen, C. Bertil Stromberg | 2003-01-14 |