Issued Patents 1997
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |