Inventor · disambiguated record
Kaj Henricson
Also filed as: HENRICSON KAJ · HENRICSON KAJ O · HENRICSON KAJ OLOF · HENRICSON KAY
64 granted patents·7 pending applications·787 citations·filing 1975–2004
99Inventor score
Top patents by PatentIndex Score
71 records- 0191US6010594AMethod of bleaching pulp with chlorine-free chemicals wherein a complexing agent is added immediately after an ozone bleach stageAHLSTROEM OY·Filed 1997·Granted Jan 4, 2000·46 cites·37 claims
- 0290US6306253B2Acid treatment of pulp at high temperature prior to chlorine dioxide bleachingANDRITZ AHLSTROM OY·Filed 1996·Granted Oct 23, 2001·35 cites·7 claims
- 0390US4971658AMethod of intensifying the washing of a fiber suspensionAHLSTROEM OY·Filed 1989·Granted Nov 20, 1990·44 cites·8 claims
- 0485US5674359AContinuous cooking of cellulosic fibrous material with cold alkali impregnationAHLSTROM MACHINERY INC·Filed 1995·Granted Oct 7, 1997·34 cites·24 claims
- 0583US6506283B2Pretreatment of chips before cookingANDRITZ INC·Filed 2001·Granted Jan 14, 2003·9 cites·3 claims
- 0682US6174411B1Continuous digester with inverted top separatorANDRITZ AHLSTROM INC·Filed 1998·Granted Jan 16, 2001·29 cites·21 claims
- 0781US6544384B2Pretreatment of chips before cookingANDRITZ INC·Filed 2001·Granted Apr 8, 2003·8 cites·3 claims
- 0881US5635026ACooking cellulose material with high alkali concentrations and/or high pHAHLSTROM MACHINERY INC·Filed 1995·Granted Jun 3, 1997·26 cites·19 claims
- 0981US4952314AApparatus for treating pulpAHLSTROEM OY·Filed 1988·Granted Aug 28, 1990·22 cites·12 claims
- 1077US5221434AMethod for treating fiber suspensionsAHLSTROEM OY·Filed 1989·Granted Jun 22, 1993·20 cites·8 claims
- 1176US6733625B2Method and apparatus for treating pulpANDRITZ OY·Filed 2001·Granted May 11, 2004·9 cites·25 claims
- 1276US4619736AApparatus for defiberizing, screening and pumping cellulose pulp or recycled paperAHLSTROEM OY·Filed 1984·Granted Oct 28, 1986·21 cites·10 claims
- 1375US5139671AApparatus for treating pulpAHLSTROEM OY·Filed 1990·Granted Aug 18, 1992·24 cites·12 claims
- 1474US5240621AMethod and apparatus for improving flotation separationAHLSTROEM OY·Filed 1991·Granted Aug 31, 1993·22 cites·11 claims
- 1574US5112444AMethod for treating pulpAHLSTROEM OY·Filed 1990·Granted May 12, 1992·18 cites·6 claims
- 1673US5203963AContinuous treatment of small chipsAHLSTROEM OY·Filed 1991·Granted Apr 20, 1993·21 cites·16 claims
- 1772US5364505APressurized ozone pulp delignification reactor and a compressor for supplying ozone to the reactorKAMYR INC·Filed 1992·Granted Nov 15, 1994·17 cites·23 claims
- 1871US6024837ALow temperature gas phase continuous digesterAHLSTROM MACHINERY INC·Filed 1998·Granted Feb 15, 2000·14 cites·8 claims
- 1970US5575395AMethod and apparatus for screening fibrous suspensionsAHLSTROEM OY·Filed 1994·Granted Nov 19, 1996·20 cites·36 claims
- 2069US6582554B1Continuous digester having a sectioned top separator with multiple liquor extraction portsANDRITZ INC·Filed 2002·Granted Jun 24, 2003·3 cites·13 claims
- 2168US5958181AContinuous cooking with a two-stage cool impregnationAHLSTROM MACHINERY INC·Filed 1997·Granted Sep 28, 1999·14 cites·18 claims
- 2268US5266160AMethod of an apparatus for treating pulpKAMYR INC·Filed 1990·Granted Nov 30, 1993·14 cites·29 claims
- 2365US6106667ATreatment of recycled bleach plant filtratesAHLSTROM MACHINERY INC·Filed 1992·Granted Aug 22, 2000·15 cites·15 claims
- 2464US6248208B1Pretreatment of chips before cookingANDRITZ AHLSTROM INC·Filed 1995·Granted Jun 19, 2001·10 cites·3 claims
- 2562US6736934B1Method of pretreating pulp in an acid tower prior to bleaching with peroxideANDRITZ OY·Filed 1996·Granted May 18, 2004·12 cites·19 claims
- 2662US6475338B1Method of minimizing transition metal ions during chemical pulping in a digester by adding chelating agent to the digesterANDRITZ INC·Filed 1996·Granted Nov 5, 2002·13 cites·20 claims
- 2762US4729837AMethod and apparatus for thickening a suspensionAHLSTROEM OY·Filed 1986·Granted Mar 8, 1988·21 cites·17 claims
- 2861US7070677B2Method and apparatus for treating pulp with fillerANDRITZ OY·Filed 2001·Granted Jul 4, 2006·2 cites·12 claims
- 2960US5147504AApparatus for treating pulp in a pressurized stateAHLSTROEM OY·Filed 1990·Granted Sep 15, 1992·10 cites·4 claims
- 3059US5660686ACooking with spent liquor pretreatment of cellulose materialAHLSTROM MACHINERY INC·Filed 1995·Granted Aug 26, 1997·11 cites·28 claims
- 3156US6136145AMethod for treating pulp in an indirect heat exchanger in connection with bleachingANDRITZ AHLSTROM OY·Filed 1996·Granted Oct 24, 2000·8 cites·24 claims
- 3256US5340440AMethod for recovering chemicals using recovery boiler having at least 2 different melt sectionsAHLSTROEM OY·Filed 1992·Granted Aug 23, 1994·12 cites·17 claims
- 3354US5328563AMethod of treating material containing sodium sulphate and/or sodium carbonate in a pulp millAHLSTROEM OY·Filed 1992·Granted Jul 12, 1994·13 cites·11 claims
- 3454US4093508AProcess for recovering chemicals from the waste liquors of sulfate cellulose digestion and the waste waters of bleachingAHLSTROEM OY·Filed 1975·Granted Jun 6, 1978·12 cites·3 claims
- 3553US2005087314A1Pulp cooking with particular alkali profilesANDRITZ INC·Filed 2004·Application pending·0 cites
- 3652US5219472AMethod of treating a fiber suspensionAHLSTROEM OY·Filed 1991·Granted Jun 15, 1993·17 cites·4 claims
- 3751US4975204AMethod and apparatus for thickening fiber suspensionAHLSTROEM OY·Filed 1988·Granted Dec 4, 1990·7 cites·25 claims
- 3851US4485646AApparatus for washing fiber stockAHLSTROEM OY·Filed 1983·Granted Dec 4, 1984·6 cites·3 claims
- 3951US2003209335A1Continuous digester having a sectioned top separator with multiple liquor extraction portsANDRITZ INC·Filed 2003·Application pending·0 cites
- 4050US5213662ATreatment of chips with high temperature black liquor to reduce black liquor viscosityKAMYR INC·Filed 1991·Granted May 25, 1993·8 cites·29 claims
- 4148US4904395AMethod and apparatus for thickening fiber suspensionAHLSTROEM OY·Filed 1987·Granted Feb 27, 1990·12 cites·9 claims
- 4248US2001020521A1Acid treatment of pulp at high temperature in connection with bleachingANDRITZ AHLSTROM INC·Filed 2001·Application pending·0 cites
- 4347US5567274AMethod of controlling pressurized ozone to a pulp delignification reactorAHLSTROM MACHINERY INC·Filed 1994·Granted Oct 22, 1996·7 cites·8 claims
- 4446US5346591AApparatus for treatment of chips with heated black liquorKAMYR INC·Filed 1993·Granted Sep 13, 1994·7 cites·9 claims
- 4546US4944840AMethod and apparatus for evaporating waste liquor produced when cooking fibrous material containing celluloseAHLSTROEM FOERETAGEN·Filed 1989·Granted Jul 31, 1990·6 cites·13 claims
- 4646US2003000661A1Removal of water-soluble compounds from wood chips prior to cookingFiled 2002·Application pending·0 cites
- 4745US6350348B1Batch cooking with black liquor pretreatmentANDRITZ AHLSTROM OY·Filed 1998·Granted Feb 26, 2002·5 cites·28 claims
- 4845US5203968AApparatus for treating fiber suspensions having rotatable liquid permeable treatment ductsAHLSTROEM OY·Filed 1991·Granted Apr 20, 1993·6 cites·24 claims
- 4945US2004040684A1Arrangement for feeding pulp to a bleaching towerFiled 2001·Application pending·0 cites
- 5044US5323914AMethod of and apparatus for separating heavy impurities from fiber suspensions in connection with pumpingAHLSTROEM OY·Filed 1990·Granted Jun 28, 1994·6 cites·8 claims
Showing the top 50 of 71 patent records by PatentIndex Score.
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