Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9371612 | Method and apparatus to produce pulp using pre-hydrolysis and Kraft cooking | Aaron Leavitt, Jussi Pakarinen | 2016-06-21 |
| 8916023 | Vapor phase hydrolysis vessel and methods related thereto | — | 2014-12-23 |
| 7455749 | Gas phase continuous digester having an inverted top separator with liquor injection | C. Bertil Stromberg, Keith Vogel, John Bolles, Patrick Sullivan | 2008-11-25 |
| 7105076 | Gas phase continuous digester having an inverted top separator with liquor injection | C. Bertil Stromberg, Keith Vogel, John Bolles, Patrick Sullivan | 2006-09-12 |
| 6277240 | Method for continuously pulping cellulosic fibrous material | Bruno Marcoccia, C. Bertil Stromberg | 2001-08-21 |
| 6120647 | Simplified liquid removal system for a cellulose pulp digester | C. Bertil Stromberg | 2000-09-19 |
| 5865948 | Method for steaming comminuted cellulosic fibrous material during continuous solvent pulping | Jairo H. Lora, John Patrick Maley, Joseph R. Phillips, David J. Lebel | 1999-02-02 |
| 5681427 | Apparatus for treating pulp produced by solvent pulping | Jairo H. Lora, John Patrick Maley, Joseph R. Phillips, David J. Lebel | 1997-10-28 |
| 5607545 | Ozone bleaching process utilizing a fluidizing mixer and super-atmospheric pressure | Kaj Henricson | 1997-03-04 |
| 5567279 | Variable stage pressure diffuser | Joseph R. Phillips, John Weston, Victor L. Bilodeau, Ronald Bain, Mark D. Barrett +1 more | 1996-10-22 |
| 5549788 | Minimal effluents discharge pulp mill with chemical recovery | Tuomo Nykanen, 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 | Tuomo Nykanen, Johan Gullichsen, Erkki Kiiskila, Esko Mattelmaki, Joseph R. Phillips +4 more | 1996-08-20 |
| 5518583 | Zero discharge mill distillation, salt recovery, and water management | Tuomo Nykanen, Johan Gullichsen, Erkki Kiiskila, Esko Mattelmaki, Joseph R. Phillips +4 more | 1996-05-21 |
| 5458738 | Clarifying suspended solids from liquid process streams | J. Wayne Chamblee, Louis O. Torregrossa, Gunther Plattner | 1995-10-17 |
| 5411633 | Medium consistency pulp ozone bleaching | Joseph R. Phillips, Erwin D. Funk, Stephen J. Dunn | 1995-05-02 |
| 5411634 | Medium consistency ozone bleaching | Kaj Henricson, Joseph R. Phillips, Erwin D. Funk, Stephen J. Dunne | 1995-05-02 |
| 5380402 | Reducing pulp mill liquid discharge | Rolf Ryham, Tuomo Nykanen, Johan Gullichsen, Erkki Kiiskila, Esko Mattelmaki +4 more | 1995-01-10 |
| 5374333 | Method for minimizing pulp mill effluents | Tuomo Nykanen, Johan Gullichsen, Erkki Kiiskila, Esko Mattelmaki, Joseph R. Phillips +4 more | 1994-12-20 |
| 5338366 | Acid pre-hydrolysis reactor system | Todd S. Grace, Mark D. Barrett, Vic L. Bilodeau, Gary L. McCarty, J. Robert Prough +1 more | 1994-08-16 |
| 5328564 | Modified digestion of paper pulp followed by ozone bleaching | Jian E. Jiang, Joseph R. Phillips | 1994-07-12 |
| 5266159 | Mass flow measurement, preferably for controlling chip feed to a digester | Andries Daamen, Gene Graham | 1993-11-30 |
| 5258100 | Minimizing gas separation in a mixer outlet | Toivo Niskanen, Kari Peltonen, Stephen J. Dunn, Mika P. Makela | 1993-11-02 |
| 5236554 | Digester having plural screens with means for controlling liquid injection and withdrawal | — | 1993-08-17 |
| 5183536 | Atmospheric diffuser improved lower screens backflushing | Joseph R. Phillips, J. Robert Prough, Victor L. Bilodeau, Ronald Bain, John Weston | 1993-02-02 |
| 5173177 | Anti-plugging adjustable orifice for gas sparged hydrocyclone | John W. Chamblee, Thomas R. Delcourt | 1992-12-22 |