Assignee
ANDRITZ AHLSTROM INC
US·28 granted patents·4 pending applications·539 citations·filing 1995–2001
Top patents by PatentIndex Score
32 records- 0193US6346167B2Dissolved solids control in pulp productionANDRITZ AHLSTROM INC·Filed 2001·Granted Feb 12, 2002·19 cites·9 claims
- 0292US6325890B1Feeding comminuted fibrous materialANDRITZ AHLSTROM INC·Filed 2000·Granted Dec 4, 2001·29 cites·8 claims
- 0390US6176971B1Heat economy enhancements for the recovery and use of energy obtained from spent cooking liquorsANDRITZ AHLSTROM INC·Filed 1998·Granted Jan 23, 2001·49 cites·20 claims
- 0489US6336993B1Metal removal from comminuted fibrous material during feedingANDRITZ AHLSTROM INC·Filed 2000·Granted Jan 8, 2002·20 cites·22 claims
- 0588US6346166B1Flash tank steam economy improvementANDRITZ AHLSTROM INC·Filed 2000·Granted Feb 12, 2002·25 cites·3 claims
- 0688US6280568B1Dissolved organic material control in a cellulose pulp continuous digesterANDRITZ AHLSTROM INC·Filed 2000·Granted Aug 28, 2001·12 cites·7 claims
- 0787US6306252B1Heat recovery from spent digester cooking liquorANDRITZ AHLSTROM INC·Filed 1995·Granted Oct 23, 2001·36 cites·8 claims
- 0886US6336573B1Hopper, or bin, screw feeder construction controlling discharge velocity profileANDRITZ AHLSTROM INC·Filed 2000·Granted Jan 8, 2002·27 cites·9 claims
- 0986US6241851B1Treatment of cellulose material with additives while producing cellulose pulpANDRITZ AHLSTROM INC·Filed 1999·Granted Jun 5, 2001·33 cites·29 claims
- 1083US6199299B1Feeding of comminuted fibrous material to a pulping processANDRITZ AHLSTROM INC·Filed 1998·Granted Mar 13, 2001·31 cites·32 claims
- 1182US6174411B1Continuous digester with inverted top separatorANDRITZ AHLSTROM INC·Filed 1998·Granted Jan 16, 2001·29 cites·21 claims
- 1279US6344112B1Screen having inclined slots for a digesterANDRITZ AHLSTROM INC·Filed 1999·Granted Feb 5, 2002·24 cites·15 claims
- 1379US6165323AScreen plate having a plurality of inclined slots in a digesterANDRITZ AHLSTROM INC·Filed 1999·Granted Dec 26, 2000·42 cites·31 claims
- 1479US6132556AMethod of controlling pulp digester pressure via liquor extractionANDRITZ AHLSTROM INC·Filed 1998·Granted Oct 17, 2000·24 cites·20 claims
- 1578US6159337ADissolved organic materials control in cellulose pulp productionANDRITZ AHLSTROM INC·Filed 1999·Granted Dec 12, 2000·13 cites·19 claims
- 1677US6284095B1Minimization of malodorous gas release from a cellulose pulp mill feed systemANDRITZ AHLSTROM INC·Filed 2000·Granted Sep 4, 2001·8 cites·22 claims
- 1777US6277240B1Method for continuously pulping cellulosic fibrous materialANDRITZ AHLSTROM INC·Filed 1998·Granted Aug 21, 2001·19 cites·18 claims
- 1875US6129816ATapered screen assembly for a cellulose pulp digesterANDRITZ AHLSTROM INC·Filed 1997·Granted Oct 10, 2000·16 cites·20 claims
- 1970US6280569B1Compression rings for column relief in continuous cooking vesselsANDRITZ AHLSTROM INC·Filed 1999·Granted Aug 28, 2001·13 cites·11 claims
- 2069US6375795B2Minimization of malodorous gas release from a cellulose pulp mill feed systemANDRITZ AHLSTROM INC·Filed 2000·Granted Apr 23, 2002·4 cites·14 claims
- 2164US6248208B1Pretreatment of chips before cookingANDRITZ AHLSTROM INC·Filed 1995·Granted Jun 19, 2001·10 cites·3 claims
- 2262US6325888B1Method for pulping sawdustANDRITZ AHLSTROM INC·Filed 1995·Granted Dec 4, 2001·11 cites·20 claims
- 2359US6186373B1Hopper, or bin, screw feeder construction controlling discharge velocity profileANDRITZ AHLSTROM INC·Filed 1999·Granted Feb 13, 2001·15 cites·30 claims
- 2458US6332542B2Tramp material removal from pulp feed systemANDRITZ AHLSTROM INC·Filed 2001·Granted Dec 25, 2001·12 cites·9 claims
- 2555US6280575B1Frusto-conical outlet for a cellulose material treatment vesselANDRITZ AHLSTROM INC·Filed 1999·Granted Aug 28, 2001·6 cites·5 claims
- 2650US2001025694A1Chip feeding to a comminuted cellulosic fibrous material treatment vesselANDRITZ AHLSTROM INC·Filed 2001·Application pending·0 cites
- 2749US6261412B1Regenerative heat recovery for high temperature condensate stripping plantsANDRITZ AHLSTROM INC·Filed 1999·Granted Jul 17, 2001·8 cites·12 claims
- 2848US2001020521A1Acid treatment of pulp at high temperature in connection with bleachingANDRITZ AHLSTROM INC·Filed 2001·Application pending·0 cites
- 2948US2001023748A1Method and apparatus for continuously pulping cellulosic fibrous materialANDRITZ AHLSTROM INC·Filed 2001·Application pending·0 cites
- 3046US2002059997A1Compression rings for column relief in continuous cooking vesselsANDRITZ AHLSTROM INC·Filed 2001·Application pending·0 cites
- 3135US6315128B1Tramp material removal from pulp feed systemsANDRITZ AHLSTROM INC·Filed 1999·Granted Nov 13, 2001·3 cites·11 claims
- 3235US6143134AChip spreader for air-lock feederANDRITZ AHLSTROM INC·Filed 1999·Granted Nov 7, 2000·1 cites·27 claims
Join the waitlist — get patent alerts
Get an alert when ANDRITZ AHLSTROM INC files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →