Assignee
ANDRITZ AHLSTROM OY
US·17 granted patents·186 citations·filing 1993–2003
Top patents by PatentIndex Score
17 records- 0190US6306253B2Acid treatment of pulp at high temperature prior to chlorine dioxide bleachingANDRITZ AHLSTROM OY·Filed 1996·Granted Oct 23, 2001·35 cites·7 claims
- 0275US6383342B1Cluster rule compliance with reduced steam consumptionANDRITZ AHLSTROM OY·Filed 2000·Granted May 7, 2002·9 cites·14 claims
- 0367US7229527B2Method for the controlled thickening of low consistency fiber suspensionsANDRITZ AHLSTROM OY·Filed 2003·Granted Jun 12, 2007·3 cites·18 claims
- 0459US6340805B1Method of manufacturing a wire screen productANDRITZ AHLSTROM OY·Filed 1996·Granted Jan 22, 2002·19 cites·9 claims
- 0559US6159338ASupply of washing liquid in a fractionating multi-stage washerANDRITZ AHLSTROM OY·Filed 1996·Granted Dec 12, 2000·9 cites·19 claims
- 0657US6235151B1Inhibiting scaling in alkaline waste liquor evaporatorsANDRITZ AHLSTROM OY·Filed 1999·Granted May 22, 2001·11 cites·21 claims
- 0756US6136145AMethod for treating pulp in an indirect heat exchanger in connection with bleachingANDRITZ AHLSTROM OY·Filed 1996·Granted Oct 24, 2000·8 cites·24 claims
- 0854US6217711B1Method of treating condensatesANDRITZ AHLSTROM OY·Filed 1999·Granted Apr 17, 2001·24 cites·8 claims
- 0949US6146604AMethod of removing nitrogen oxides from recovery boiler flue gasesANDRITZ AHLSTROM OY·Filed 1999·Granted Nov 14, 2000·19 cites·18 claims
- 1048US6125688AMethod of determining pulp propertiesANDRITZ AHLSTROM OY·Filed 1998·Granted Oct 3, 2000·13 cites·21 claims
- 1145US6350348B1Batch cooking with black liquor pretreatmentANDRITZ AHLSTROM OY·Filed 1998·Granted Feb 26, 2002·5 cites·28 claims
- 1241US6165316AMethod and plant for separating soap from black liquor using a pressure screenANDRITZ AHLSTROM OY·Filed 1997·Granted Dec 26, 2000·6 cites·20 claims
- 1340US6193406B1Method and apparatus for mixing pulp a suspension with a fluid medium with a freely rotatable mixing rotorANDRITZ AHLSTROM OY·Filed 1997·Granted Feb 27, 2001·12 cites·10 claims
- 1437US6354514B1Method and apparatus for treating material having poor thermal conductivityANDRITZ AHLSTROM OY·Filed 1999·Granted Mar 12, 2002·7 cites·22 claims
- 1534US6375797B1Bleaching chemical pulp in a PkDQ-Po SequenceANDRITZ AHLSTROM OY·Filed 1998·Granted Apr 23, 2002·1 cites·13 claims
- 1633US6358363B1Method and apparatus for bleaching pulp using two fluidizing mixersANDRITZ AHLSTROM OY·Filed 1993·Granted Mar 19, 2002·2 cites·20 claims
- 1727US6418637B1Method of sealing a rotary drum connectionANDRITZ AHLSTROM OY·Filed 1998·Granted Jul 16, 2002·3 cites·7 claims
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