Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6113742 | Digester having screening arrangement for isothermal cooking of fibrous material | Ake Backlund | 2000-09-05 |
| 5919337 | Method of continuously isothermally cooking of pulp | Sven-Erik Olsson, Stig Andtbacka, Finn Jacobsen, Ake Backlund | 1999-07-06 |
| 5827401 | Screen system for a continuous digester | Ake Backlund, Kenneth Bellstrom, Finn Oulie, Soren Soderqvist | 1998-10-27 |
| 5766413 | Process for isothermal cooking pulp in a continuous digester | Ake Backlund | 1998-06-16 |
| 5591303 | Process for operating a digester | Finn Oulie, Ake Backlund | 1997-01-07 |
| 5567280 | Digester for cooking pulp having staggered circular screens for isothermal cooking | Ake Backlund, Kenneth Bellstrom, Finn Oulie, Soren Soderqvist | 1996-10-22 |
| 5470437 | Digester for cooking pulp having staggered screens | Finn Oulie, Ake Backlund | 1995-11-28 |