Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5635025 | Digester system containing a single vessel serving as all of a chip bin, steaming vessel, and chip chute | — | 1997-06-03 |
| 5617975 | Chip feed system | Jerry R. Johanson, Mark D. Barrett, John Pietrangelo | 1997-04-08 |
| 5567279 | Variable stage pressure diffuser | Joseph R. Phillips, John Weston, Ronald Bain, Mark D. Barrett, Brian F. Greenwood +1 more | 1996-10-22 |
| 5302247 | Top circulation line cooling for a modified cook digester | Jan T. Richardsen, Mark D. Barrett, Carl Luhrmann | 1994-04-12 |
| 5265447 | Drum washer sealing | Keith Vogel, Ron Bain | 1993-11-30 |
| 5187956 | Preventing clogging in pressure diffusers | Joseph R. Phillips, Peter E. T. Warloff, John Hefele, Ronald Bain, Mark D. Barrett | 1993-02-23 |
| 5183536 | Atmospheric diffuser improved lower screens backflushing | Joseph R. Phillips, J. Robert Prough, Brian F. Greenwood, Ronald Bain, John Weston | 1993-02-02 |
| 5169498 | Atmospheric pre-steaming chip bin vacuum and pressure relief device | John Weston, Keith Vogel, Mark D. Barrett, Ronald Bain | 1992-12-08 |
| 5116476 | Atmospheric diffuser improved lower screens backflushing | Joseph R. Phillips, J. Robert Prough, Brian F. Greenwood, Ronald Bain, John Weston | 1992-05-26 |