Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5489363 | Pulping with low dissolved solids for improved pulp strength | Bruno Marcoccia, J. Robert Prough, Richard O. Laakso, Rolf Ryham, Jan T. Richardsen +1 more | 1996-02-06 |
| 5411634 | Medium consistency ozone bleaching | Kaj Henricson, Brian F. Greenwood, Erwin D. Funk, Stephen J. Dunne | 1995-05-02 |
| 5411633 | Medium consistency pulp ozone bleaching | Brian F. Greenwood, Erwin D. Funk, Stephen J. Dunn | 1995-05-02 |
| 5380402 | Reducing pulp mill liquid discharge | Rolf Ryham, Tuomo Nykanen, Brian F. Greenwood, Johan Gullichsen, Erkki Kiiskila +4 more | 1995-01-10 |
| 5374333 | Method for minimizing pulp mill effluents | Tuomo Nykanen, Brian F. Greenwood, Johan Gullichsen, Erkki Kiiskila, Esko Mattelmaki +4 more | 1994-12-20 |
| 5328564 | Modified digestion of paper pulp followed by ozone bleaching | Jian E. Jiang, Brian F. Greenwood | 1994-07-12 |
| 5187956 | Preventing clogging in pressure diffusers | Peter E. T. Warloff, John Hefele, Victor L. Bilodeau, Ronald Bain, Mark D. Barrett | 1993-02-23 |
| 5183536 | Atmospheric diffuser improved lower screens backflushing | J. Robert Prough, Victor L. Bilodeau, Brian F. Greenwood, Ronald Bain, John Weston | 1993-02-02 |
| 5116476 | Atmospheric diffuser improved lower screens backflushing | J. Robert Prough, Victor L. Bilodeau, Brian F. Greenwood, Ronald Bain, John Weston | 1992-05-26 |
| 5034128 | Apparatus for dewatering pulp | Rune Hillstrom, Finn Jacobsen | 1991-07-23 |
| 5021125 | Pistonless accumulator | John Weston, Michael D. Meredith | 1991-06-04 |
| 4944842 | Method for reducing contamination in pulp processing | C. Bertil Stromberg, Louis O. Torregrossa | 1990-07-31 |
| 4927312 | Chip gates with air lock | Michael D. Meredith, Richard O. Laakso, C. Bertil Stromberg | 1990-05-22 |
| 4547264 | Method of withdrawing liquid from a pair of vertically spaced annular screens | Michael I. Sherman | 1985-10-15 |