Assignee
ANDRITZ INC
US·172 granted patents·55 pending applications·990 citations·filing 1996–2024
Top patents by PatentIndex Score
227 records- 0196US7758721B2Pulping process with high defiberization chip pretreatmentANDRITZ INC·Filed 2007·Granted Jul 20, 2010·24 cites·18 claims
- 0295US11441266B2Disruptor assembly adjustment system and methodANDRITZ INC·Filed 2020·Granted Sep 13, 2022·3 cites·24 claims
- 0395US7758720B2High defiberization pretreatment process for mechanical refiningANDRITZ INC·Filed 2007·Granted Jul 20, 2010·23 cites·4 claims
- 0493US9604221B2Stator refiner plate element having curved bars and serrated leading edgesANDRITZ INC·Filed 2013·Granted Mar 28, 2017·10 cites·18 claims
- 0593US7713381B2TMP refining of destructured chipsANDRITZ INC·Filed 2007·Granted May 11, 2010·14 cites·16 claims
- 0693US7300541B2High defiberization chip pretreatmentANDRITZ INC·Filed 2003·Granted Nov 27, 2007·33 cites·11 claims
- 0793US7293659B2Drum structure for rotary drum filtering apparatus and methods of using sameANDRITZ INC·Filed 2006·Granted Nov 13, 2007·35 cites·19 claims
- 0892US8906198B2Method for production of micro fibrillated celluloseANDRITZ INC·Filed 2013·Granted Dec 9, 2014·13 cites·7 claims
- 0992US8028945B2Refiner plates having steam channels and method for extracting backflow steam from a disk refinerANDRITZ INC·Filed 2008·Granted Oct 4, 2011·15 cites·23 claims
- 1092US7900862B2Mechanical pulping refiner plate having curved refining bars with jagged leading sidewalls and method for designing platesANDRITZ INC·Filed 2008·Granted Mar 8, 2011·15 cites·18 claims
- 1192US7892400B2High defiberization chip pretreatment apparatusANDRITZ INC·Filed 2007·Granted Feb 22, 2011·12 cites·19 claims
- 1292US7575658B2Vacuum washer drumANDRITZ INC·Filed 2007·Granted Aug 18, 2009·12 cites·2 claims
- 1391US11633681B2Replaceable filter plate assembly for a rotary drum filterANDRITZ INC·Filed 2020·Granted Apr 25, 2023·10 cites·12 claims
- 1491US11628446B2Flinger apparatus for a counter-rotating refinerANDRITZ INC·Filed 2020·Granted Apr 18, 2023·2 cites·20 claims
- 1591US9968938B2Refiner plate with gradually changing geometryANDRITZ INC·Filed 2013·Granted May 15, 2018·6 cites·26 claims
- 1691US8342437B2Deflaker plate and methods relating theretoANDRITZ INC·Filed 2010·Granted Jan 1, 2013·14 cites·16 claims
- 1791US7758726B2Disc refiner with increased gap between fiberizing and fibrillating bandsANDRITZ INC·Filed 2007·Granted Jul 20, 2010·15 cites·18 claims
- 1890US11083985B2Vapor relief strainer with cleanerANDRITZ INC·Filed 2018·Granted Aug 10, 2021·7 cites·14 claims
- 1990US10328368B2Flat-face valve for pulp rotary drum vacuum washer filterANDRITZ INC·Filed 2016·Granted Jun 25, 2019·4 cites·9 claims
- 2090US7883037B2Refiner stator plate having an outer row of teeth slanted to deflect pulp and method for pulp deflection during refiningANDRITZ INC·Filed 2010·Granted Feb 8, 2011·7 cites·9 claims
- 2190US7458533B2Tooth refiner plates with varying feeding angles and refining methodANDRITZ INC·Filed 2007·Granted Dec 2, 2008·12 cites·9 claims
- 2290US7347916B2Vacuum washer drumANDRITZ INC·Filed 2005·Granted Mar 25, 2008·8 cites·8 claims
- 2390US7300540B2Energy efficient TMP refining of destructured chipsANDRITZ INC·Filed 2004·Granted Nov 27, 2007·23 cites·14 claims
- 2489US9856601B2Method and apparatus for adding steam for a steam explosion pretreatment processANDRITZ INC·Filed 2013·Granted Jan 2, 2018·7 cites·21 claims
- 2589US8048263B2Four stage alkaline peroxide mechanical pulpingsANDRITZ INC·Filed 2010·Granted Nov 1, 2011·15 cites·32 claims
- 2689US7766269B2Refiner stator plate having an outer row of teeth slanted to deflect pulp and method for pulp deflection during refiningANDRITZ INC·Filed 2007·Granted Aug 3, 2010·9 cites·11 claims
- 2789US6841042B2Feeding comminuted fibrous material using high pressure screw and centrifugal pumpsANDRITZ INC·Filed 2003·Granted Jan 11, 2005·24 cites·12 claims
- 2889US6576084B1Method of pretreating pulp with yield or strength-enhancing additiveANDRITZ INC·Filed 2000·Granted Jun 10, 2003·18 cites·16 claims
- 2989US6368453B1Chip feeding to a comminuted cellulosic fibrous material treatment vesselANDRITZ INC·Filed 2000·Granted Apr 9, 2002·14 cites·12 claims
- 3088USD916890SDisplay panel portion with a computer iconANDRITZ INC·Filed 2018·Granted Apr 20, 2021·41 cites·1 claims
- 3188US8685205B2Flash tank with compact steam discharge assemblyANDRITZ INC·Filed 2013·Granted Apr 1, 2014·8 cites·25 claims
- 3288US6451163B2Method of handling comminuted cellulosic fibrous slurry in a cylindrical vesselANDRITZ INC·Filed 2001·Granted Sep 17, 2002·13 cites·12 claims
- 3388US6436233B1Feeding cellulose material to a treatment vesselANDRITZ INC·Filed 2000·Granted Aug 20, 2002·15 cites·21 claims
- 3486US11226095B2Velocity damper for a recovery boilerANDRITZ INC·Filed 2020·Granted Jan 18, 2022·2 cites·8 claims
- 3586US7846294B2Method of refining destructured chipsANDRITZ INC·Filed 2007·Granted Dec 7, 2010·6 cites·12 claims
- 3686US7357074B2Compression screw with combination single and double flightsANDRITZ INC·Filed 2006·Granted Apr 15, 2008·26 cites·25 claims
- 3786US6551462B2System for feeding comminuted fibrous materialANDRITZ INC·Filed 2001·Granted Apr 22, 2003·13 cites·15 claims
- 3886US6447645B1Feeding cellulose material to a treatment vesselANDRITZ INC·Filed 2001·Granted Sep 10, 2002·13 cites·11 claims
- 3986US6379504B1Apparatus for pulping sawdustANDRITZ INC·Filed 2001·Granted Apr 30, 2002·17 cites·10 claims
- 4085US9103070B2Flash tank with adjustable inletANDRITZ INC·Filed 2013·Granted Aug 11, 2015·4 cites·7 claims
- 4185US7556713B2Method and system for feeding cellulose chips to a high pressure continuous cooking systemANDRITZ INC·Filed 2005·Granted Jul 7, 2009·5 cites·16 claims
- 4284US9551430B2Flat-face valve for pulp rotary drum vacuum washer filter and methodANDRITZ INC·Filed 2013·Granted Jan 24, 2017·5 cites·6 claims
- 4384US7780815B2Gas free valve for pulp vacuum washer and methodANDRITZ INC·Filed 2007·Granted Aug 24, 2010·4 cites·15 claims
- 4484US7478773B2Tooth refiner plates having V-shaped teeth and refining methodANDRITZ INC·Filed 2006·Granted Jan 20, 2009·15 cites·19 claims
- 4584US6524436B2Flash tank steam economy improvementANDRITZ INC·Filed 2001·Granted Feb 25, 2003·15 cites·5 claims
- 4683US7981248B2Gas free valve for pulp vacuum washer and methodANDRITZ INC·Filed 2010·Granted Jul 19, 2011·4 cites·14 claims
- 4783US7823822B2System and method to align refiner plates during installation on a discANDRITZ INC·Filed 2007·Granted Nov 2, 2010·10 cites·15 claims
- 4883US6569289B2Cellulose slurry treating systems for adding AQ to a cellulose slurry in the substantial absence of alkaliANDRITZ INC·Filed 2001·Granted May 27, 2003·9 cites·2 claims
- 4983US6506283B2Pretreatment of chips before cookingANDRITZ INC·Filed 2001·Granted Jan 14, 2003·9 cites·3 claims
- 5082US12422833B2Material processing optimizationANDRITZ INC·Filed 2024·Granted Sep 23, 2025·0 cites·17 claims
Showing the top 50 of 227 patent records by PatentIndex Score.
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