Assignee
ANDRITZ OY
FI·90 granted patents·23 pending applications·356 citations·filing 1994–2025
Top patents by PatentIndex Score
113 records- 0191US7640750B2Apparatus and method for producing energy at a pulp millANDRITZ OY·Filed 2006·Granted Jan 5, 2010·17 cites·24 claims
- 0289US6514380B1Treatment of chemical pulpANDRITZ OY·Filed 1998·Granted Feb 4, 2003·44 cites·22 claims
- 0383US8002994B2Method and apparatus for thickening lime mud in a disc filterANDRITZ OY·Filed 2005·Granted Aug 23, 2011·13 cites·19 claims
- 0482US6776876B1Method of treating cellulosic pulp to remove hexenuronic acidANDRITZ OY·Filed 1997·Granted Aug 17, 2004·41 cites·27 claims
- 0581US12173798B2Sealing arrangement for detecting thickness of a sealing element of a sealANDRITZ OY·Filed 2020·Granted Dec 24, 2024·2 cites·21 claims
- 0681US7267146B2Chipper bed knifeANDRITZ OY·Filed 2005·Granted Sep 11, 2007·11 cites·14 claims
- 0776US6733625B2Method and apparatus for treating pulpANDRITZ OY·Filed 2001·Granted May 11, 2004·9 cites·25 claims
- 0871US7207280B2Combustion air system for recovery boilers, burning spent liquors from pulping processesANDRITZ OY·Filed 2003·Granted Apr 24, 2007·5 cites·53 claims
- 0971US2026049662A1Sealing arrangementANDRITZ OY·Filed 2025·Application pending·0 cites
- 1071US2025101681A1Arrangement and method for degassing a pumpANDRITZ OY·Filed 2024·Application pending·0 cites
- 1170US6579091B1Cleaning device for cleaning air ports of a furnaceANDRITZ OY·Filed 2002·Granted Jun 17, 2003·10 cites·9 claims
- 1269US7661376B2System for producing energy at a pulp millANDRITZ OY·Filed 2003·Granted Feb 16, 2010·5 cites·16 claims
- 1368US9719209B2Method for leaching recovery-boiler ashANDRITZ OY·Filed 2013·Granted Aug 1, 2017·2 cites·17 claims
- 1468US7988820B2Method for cleaning and/or cooling a liquor gun in a chemical recovery boilerANDRITZ OY·Filed 2008·Granted Aug 2, 2011·5 cites·10 claims
- 1568US6461473B1Supply of washing liquid in a fractionating multi-stage washerANDRITZ OY·Filed 1998·Granted Oct 8, 2002·13 cites·5 claims
- 1667US7931152B2Shuffling apparatus and method for aligning wood logs in a conveyorANDRITZ OY·Filed 2007·Granted Apr 26, 2011·4 cites·20 claims
- 1767US7831084B2Control of a recovery boiler or alikeANDRITZ OY·Filed 2005·Granted Nov 9, 2010·2 cites·34 claims
- 1865US11725341B2Method of treating fly ash of a recovery boilerANDRITZ OY·Filed 2018·Granted Aug 15, 2023·1 cites·17 claims
- 1965US9901853B2Method and apparatus for washing pulp by means of intensified suctionANDRITZ OY·Filed 2012·Granted Feb 27, 2018·2 cites·10 claims
- 2065US8020594B2Debarking mechanismANDRITZ OY·Filed 2005·Granted Sep 20, 2011·2 cites·10 claims
- 2164US6742463B2Combustion air system for recovery boilers, burning spent liquors from pulping processesANDRITZ OY·Filed 2002·Granted Jun 1, 2004·11 cites·48 claims
- 2264US2025012009A1Arrangement for installation of monitoring sensors of a treatment vessel for lignocellulosic materialANDRITZ OY·Filed 2024·Application pending·0 cites
- 2363US12503417B2Method of purifying raw methanolANDRITZ OY·Filed 2021·Granted Dec 23, 2025·0 cites·15 claims
- 2462US11560943B2Transmission wheel and a method for its mountingANDRITZ OY·Filed 2019·Granted Jan 24, 2023·1 cites·10 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
- 2661US12331835B2Method and arrangement for washer seal controlANDRITZ OY·Filed 2021·Granted Jun 17, 2025·0 cites·6 claims
- 2761US7070677B2Method and apparatus for treating pulp with fillerANDRITZ OY·Filed 2001·Granted Jul 4, 2006·2 cites·12 claims
- 2861US6615884B2Debarking shaft for a debarking machineANDRITZ OY·Filed 2002·Granted Sep 9, 2003·9 cites·21 claims
- 2960US12467539B2Sealing arrangementANDRITZ OY·Filed 2022·Granted Nov 11, 2025·0 cites·11 claims
- 3060US12173451B2Arrangement and method for degassing a pumpANDRITZ OY·Filed 2019·Granted Dec 24, 2024·0 cites·10 claims
- 3160US8950584B2Apparatus for screening fibrous suspensionsANDRITZ OY·Filed 2012·Granted Feb 10, 2015·1 cites·22 claims
- 3259US9259674B2Method and apparatus for reducing the thickness of a precoat layer of a disc filterANDRITZ OY·Filed 2013·Granted Feb 16, 2016·2 cites·14 claims
- 3359US7328808B2Apparatus for sorting wood chips in separate fractionsANDRITZ OY·Filed 2001·Granted Feb 12, 2008·7 cites·16 claims
- 3459US6588467B2Arrangement in the discharge end of a debarking machineANDRITZ OY·Filed 2002·Granted Jul 8, 2003·8 cites·13 claims
- 3558US6619345B2Arrangement for a debarking shaftANDRITZ OY·Filed 2002·Granted Sep 16, 2003·8 cites·14 claims
- 3658US2024229352A1An accept tank mixing arrangementANDRITZ OY·Filed 2022·Application pending·0 cites
- 3757US10160706B2Process for removal of sulphur from raw methanolANDRITZ OY·Filed 2014·Granted Dec 25, 2018·1 cites·18 claims
- 3857US10132495B2Method and system for monitoring the mass changes of heat exchangers of a steam boilerANDRITZ OY·Filed 2014·Granted Nov 20, 2018·3 cites·16 claims
- 3957US6578529B2Arrangement for feeding black liquor into a recovery boilerANDRITZ OY·Filed 2001·Granted Jun 17, 2003·12 cites·21 claims
- 4056US10676395B2Method and arrangement for burning lime mudANDRITZ OY·Filed 2017·Granted Jun 9, 2020·0 cites·16 claims
- 4156US7128216B2Closed air circulation systemANDRITZ OY·Filed 2001·Granted Oct 31, 2006·6 cites·8 claims
- 4256US2016040356A1Method and assembly for processing cellulose pulp of wood processing industryANDRITZ OY·Filed 2015·Application pending·0 cites
- 4355US12479876B2Method of removing volatile compounds from a lignin-containing material, use of a distillation method, and a lignin-containing materialANDRITZ OY·Filed 2020·Granted Nov 25, 2025·0 cites·18 claims
- 4455US12129598B2Arrangement for installation of monitoring sensors of a treatment vessel for lignocellulosic materialANDRITZ OY·Filed 2019·Granted Oct 29, 2024·0 cites·18 claims
- 4555US6978899B2Apparatus for sorting wood chips in separate fractionsANDRITZ OY·Filed 2001·Granted Dec 27, 2005·6 cites·13 claims
- 4655US2024199764A1System and method for producing microcrystalline celluloseANDRITZ OY·Filed 2022·Application pending·0 cites
- 4755US2025011263A1A modified air stripping process and apparatusANDRITZ OY·Filed 2022·Application pending·0 cites
- 4854US7569200B2Method for reducing nitrogen oxide emissionsANDRITZ OY·Filed 2005·Granted Aug 4, 2009·2 cites·15 claims
- 4954US6797125B2Method of treating condensatesANDRITZ OY·Filed 2002·Granted Sep 28, 2004·10 cites·10 claims
- 5054US6767432B1Apparatus for the thickening of fiber suspensionsANDRITZ OY·Filed 1999·Granted Jul 27, 2004·9 cites·8 claims
Showing the top 50 of 113 patent records by PatentIndex Score.
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