Issued Patents All Time
Showing 26–50 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7351306 | Cooking of cellulose pulp in a cooking liquor containing pre-evaporated black liquor | Mikael Lindstrom | 2008-04-01 |
| 7285179 | Continuous digester for cellulose pulp including method and recirculation system for such digester | Mikael Lindstrom | 2007-10-23 |
| 7279070 | Method for the continuous cooking of wood raw material for cellulose pulp | Lennart Gustavsson | 2007-10-09 |
| 7270725 | Pretreatment of chips with white liquor prior to a treatment with black liquor | Mikael Lindstrom | 2007-09-18 |
| 7229524 | Feeding arrangement for feeding of chips to chip bins | — | 2007-06-12 |
| 7217338 | Process for continuously cooking chemical cellulose pulp | Catrin Gustavsson, Mikael Lindstrom, Krister Olsson | 2007-05-15 |
| 7214291 | Method for the modification of cellulose fibres | Catrin Gustavsson, Krister Olsson | 2007-05-08 |
| 7112256 | Method for continuous cooking of chemical pulp to improve heat economy | Lennart Gustavsson | 2006-09-26 |
| 7077931 | Method and bleaching line with a main conduit for wash liquor | Lennart Gustavsson | 2006-07-18 |
| 6966970 | Method for supplying washing liquid to a process for cooking cellulose pulp | Lennart Gustavsson | 2005-11-22 |
| 6843885 | Method for controlling the cooking temperature in a continuous vapour phase digester | Lennart Gustavsson | 2005-01-18 |
| 6722130 | Method of producing process steam from a black liquor | Lennart Gustavsson, Per Johan Anders Nyström | 2004-04-20 |
| 6699357 | Process for continuous cooking of pulp | Lennart Gustavsson, Sven-Erik Olsson | 2004-03-02 |
| 6605180 | Process for continuous cooking of pulp | Lennart Gustavsson, Sven-Erik Olsson | 2003-08-12 |
| 6468390 | Method for continuous cooking of lignocellulosic fiber material | Krister Olsson, Bror Lennart Gustavsson, Ernst Mikael Lindström | 2002-10-22 |
| 6361649 | Method for the continuous cooking of chemical pulp | — | 2002-03-26 |
| 6332954 | Continuous digester system having a top separator | — | 2001-12-25 |
| 6332950 | Method in connection with the pretreatment of comminuted fibrous material | Lennart Gustavsson | 2001-12-25 |
| 6325889 | Hydraulic vessel system having a downwardly feeding separator | Johan Engstrom, Sven-Erik Ohlsson, Per Johan Anders Nyström, Soren Soderqvist, Bjorn Karlsson | 2001-12-04 |
| 6280567 | System and method for treatment of cellulose-containing material prior to pulp digestion | Lennart Gustavsson, Johan Engstrom | 2001-08-28 |
| 6254723 | Method for continuous cooking in a single-vessel digester | Lennart Gustavsson | 2001-07-03 |
| 6214171 | Top separator in a continuous digester system | — | 2001-04-10 |
| 6203662 | Method for the continuous cooking of pulp in a digester system having a top separator | Johan Engstrom, Krister Olsson, Mikael Lindstrom, Christofer Lindgren, Soren Gustavsson | 2001-03-20 |
| 6171494 | Hydraulic vessel system having a downwardly feeding separator | Johan Engstrom, Sven-Erik Ohlsson, Per Johan Anders Nyström, Soren Soderqvist, Bjorn Karlsson | 2001-01-09 |
| 6159336 | Method and device for the continuous cooking of pulp | Johan Engstrom, Krister Olsson, Mikael Lindstrom, Christofer Lindgren, Soren Gustavsson | 2000-12-12 |