| 6336994 |
Totally chlorine free bleaching process using recovered filtrate |
Bengt Nilsson, Lars Stigsson |
2002-01-08 |
| 6113742 |
Digester having screening arrangement for isothermal cooking of fibrous material |
Johanna Svanberg |
2000-09-05 |
| 5919337 |
Method of continuously isothermally cooking of pulp |
Sven-Erik Olsson, Stig Andtbacka, Finn Jacobsen, Johanna Svanberg |
1999-07-06 |
| 5827401 |
Screen system for a continuous digester |
Kenneth Bellstrom, Finn Oulie, Johanna Svanberg, Soren Soderqvist |
1998-10-27 |
| 5766413 |
Process for isothermal cooking pulp in a continuous digester |
Johanna Svanberg |
1998-06-16 |
| 5746886 |
Method for the recovery of energy and chemicals from cellulose spent liquor containing potassium using a gasifier |
Lars Stigsson |
1998-05-05 |
| 5628872 |
Method for bleaching pulp with hydrogen peroxide recovered from cellulosic spent liquor |
Lars Stigsson, Ove Wallergard |
1997-05-13 |
| 5591303 |
Process for operating a digester |
Finn Oulie, Johanna Svanberg |
1997-01-07 |
| 5567280 |
Digester for cooking pulp having staggered circular screens for isothermal cooking |
Kenneth Bellstrom, Finn Oulie, Johanna Svanberg, Soren Soderqvist |
1996-10-22 |
| 5529661 |
Process for controlling the flow of cellulosic fiber material through an impregnation vessel |
— |
1996-06-25 |
| 5470437 |
Digester for cooking pulp having staggered screens |
Finn Oulie, Johanna Svanberg |
1995-11-28 |
| 5415734 |
Process for bleaching pulp without using chlorine containing chemicals |
Stig Andtbacka, Bjorn Dillner |
1995-05-16 |
| 5217575 |
Process for oxygen bleaching using two vertical reactors |
— |
1993-06-08 |
| 5192396 |
Process for the continuous digestion of cellulosic fiber material |
— |
1993-03-09 |
| 5080755 |
Process for the continuous digestion of cellulosic fiber material |
— |
1992-01-14 |
| 4968385 |
Method of preparing a plup using a fluidizing centrifugal pump during impregnation |
Julio Amador, Eurico de Faria Amaro, Hans T. Haukerud |
1990-11-06 |
| 4922989 |
Treatment of mechanical pulp to remove resin |
Olof Ferritsius, Goran Tistad |
1990-05-08 |
| 4596631 |
Method of removing latency from medium consistency pulps by pumping the pulp |
J. Robert Prough, Louis O. Torregrossa |
1986-06-24 |
| 4419184 |
Method for control of chemicals during gas treatment of suspensions |
— |
1983-12-06 |