Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5958181 | Continuous cooking with a two-stage cool impregnation | C. Bertil Stromberg, Kaj Henricson, Bruno Marcoccia | 1999-09-28 |
| 5849151 | Continuous digester having means for implementing low dissolved solids profiling | Bruno Marcoccia, Richard O. Laakso, R. Fred Chasse | 1998-12-15 |
| 5849150 | Low dissolved solids control in pulp production | Bruno Marcoccia, Richard O. Laakso, Joseph R. Phillips, Rolf Ryham, Jan T. Richardsen +1 more | 1998-12-15 |
| 5824188 | Method of controlling the pressure of a continuous digester using an extraction-dilution | Bruno Marcoccia, Richard O. Laakso, Carl Luhrmann | 1998-10-20 |
| 5766418 | Handling fibrous material used to produce cellulose pulp | — | 1998-06-16 |
| 5736006 | Method and apparatus for pulping with controlled heating to improve delignification and pulp strength | — | 1998-04-07 |
| 5700355 | Chip feeding for a continuous digester | — | 1997-12-23 |
| 5690341 | Method and apparatus for the facilitating the servicing of drive-shaft assemblies for pressurized vessels | William A. Kerpka, John Bolles | 1997-11-25 |
| H1681 | Discharge from pulping vessels without the aid of mechanical agitation | Jerry R. Johanson, J. Wayne Chamblee | 1997-10-07 |
| 5662775 | Continuous digester with dissolved solids handling | Bruno Marcoccia, Richard O. Laakso, R. Fred Chasse | 1997-09-02 |
| 5622598 | Chip pumping to a digester | — | 1997-04-22 |
| 5620562 | Dissolved solids control in pulp production | Bruno Marcoccia, Richard O. Laakso, Joseph R. Phillips, Rolf Ryham, Jan T. Richardsen +1 more | 1997-04-15 |
| 5575890 | Method for selectively increasing the sulfide ion concentration and sulfidity of kraft cooking liquor during kraft cooking of wood | Bruno Marcoccia, Richard O. Laakso, Carl Luhrmann | 1996-11-19 |
| 5547012 | Dissolved solids control in pulp production | Bruno Marcoccia, Richard O. Laakso, Joseph R. Phillips, Rolf Ryham, Jan T. Richardsen +1 more | 1996-08-20 |
| 5547546 | Chip bin with steaming control and a gas vent containing a vacuum and pressure relief device | Joseph R. Phillips | 1996-08-20 |
| 5536366 | Digester system for implementing low dissolved solids profiling | Bruno Marcoccia, Richard O. Laakso, R. Fred Chasse | 1996-07-16 |
| 5489363 | Pulping with low dissolved solids for improved pulp strength | Bruno Marcoccia, Richard O. Laakso, Joseph R. Phillips, Rolf Ryham, Jan T. Richardsen +1 more | 1996-02-06 |
| 5476572 | Chip feeding for a continuous digester | — | 1995-12-19 |
| 5401361 | Completely coutercurrent cook continuous digester | C. Bertil Stromberg, Richard O. Laakso, Bruno Marcoccia | 1995-03-28 |
| 5338366 | Acid pre-hydrolysis reactor system | Todd S. Grace, Mark D. Barrett, Vic L. Bilodeau, Gary L. McCarty, Brian F. Greenwood +1 more | 1994-08-16 |
| 5183536 | Atmospheric diffuser improved lower screens backflushing | Joseph R. Phillips, Victor L. Bilodeau, Brian F. Greenwood, Ronald Bain, John Weston | 1993-02-02 |
| 5116476 | Atmospheric diffuser improved lower screens backflushing | Joseph R. Phillips, Victor L. Bilodeau, Brian F. Greenwood, Ronald Bain, John Weston | 1992-05-26 |
| 4946556 | Method of oxygen delignifying wood pulp with between stage washing | — | 1990-08-07 |
| 4731160 | Drainage characteristics of mechanical pulp | Michael D. Fahey, Pule Calderon | 1988-03-15 |
| 4596631 | Method of removing latency from medium consistency pulps by pumping the pulp | Louis O. Torregrossa, Ake Backlund | 1986-06-24 |