Issued Patents All Time
Showing 25 most recent of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7560008 | Extraction with compaction and springback considerations | — | 2009-07-14 |
| 7147750 | Extraction with compaction and springback considerations | — | 2006-12-12 |
| 6841042 | Feeding comminuted fibrous material using high pressure screw and centrifugal pumps | C. Bertil Stromberg, Aaron Leavitt | 2005-01-11 |
| 6669410 | High pressure feeder having smooth pocket in rotor | — | 2003-12-30 |
| 6616384 | High pressure feeder having smooth pocket in rotor | — | 2003-09-09 |
| 6551462 | System for feeding comminuted fibrous material | C. Bertil Stromberg, Tim Pease | 2003-04-22 |
| 6468006 | High pressure feeder having restriction ramp in high pressure inlet | — | 2002-10-22 |
| 6451163 | Method of handling comminuted cellulosic fibrous slurry in a cylindrical vessel | Jerry R. Johanson | 2002-09-17 |
| 6451172 | In-line drainer enhancements | Mark D. Barrett, C. Bertil Stromberg | 2002-09-17 |
| 6447645 | Feeding cellulose material to a treatment vessel | Mark D. Barrett, C. Bertil Stromberg | 2002-09-10 |
| 6436233 | Feeding cellulose material to a treatment vessel | Mark D. Barrett, C. Bertil Stromberg | 2002-08-20 |
| 6432264 | Method of making a vessel assembly for handling comminuted cellulosic fibrous material | Jerry R. Johanson | 2002-08-13 |
| 6379504 | Apparatus for pulping sawdust | Jay Miele, Marco Marois, R. Fred Chasse, J. Wayne Chamblee, John Weston | 2002-04-30 |
| 6368453 | Chip feeding to a comminuted cellulosic fibrous material treatment vessel | Auvo Kettunen, Richard O. Laakso, C. Bertil Stromberg, Jay Miele | 2002-04-09 |
| 6346167 | Dissolved solids control in pulp production | Bruno Marcoccia, Richard O. Laakso, Joseph R. Phillips, Rolf Ryham, Jan T. Richardsen +1 more | 2002-02-12 |
| 6325890 | Feeding comminuted fibrous material | C. Bertil Stromberg, Tim Pease | 2001-12-04 |
| 6325888 | Method for pulping sawdust | Jay Miele, Marco Marois, R. Fred Chasse, J. Wayne Chamblee, John Weston | 2001-12-04 |
| 6280568 | Dissolved organic material control in a cellulose pulp continuous digester | Bruno Marcoccia, Richard O. Laakso, Joseph R. Phillips, Rolf Ryham, Jan T. Richardsen +1 more | 2001-08-28 |
| 6280575 | Frusto-conical outlet for a cellulose material treatment vessel | Jerry R. Johanson | 2001-08-28 |
| 6199299 | Feeding of comminuted fibrous material to a pulping process | Jerry R. Johanson | 2001-03-13 |
| 6159337 | Dissolved organic materials control in cellulose pulp production | Bruno Marcoccia, Richard O. Laakso, Joseph R. Phillips, Rolf Ryham, Jan T. Richardsen +1 more | 2000-12-12 |
| 6143134 | Chip spreader for air-lock feeder | — | 2000-11-07 |
| 6086712 | DOM control in cellulose pulp production | Bruno Marcoccia, Richard O. Laakso, Joseph R. Phillips, Rolf Ryham, Jan T. Richardsen +1 more | 2000-07-11 |
| 5985096 | Vertical pulping digester having substantially constant diameter | Bruno Marcoccia, Jerry R. Johanson, C. Bertil Stromberg, Joseph R. Phillips | 1999-11-16 |
| 5968314 | Chip feeding for a digester | — | 1999-10-19 |