Assignee
AHLSTROM MACHINERY OY
FI·31 granted patents·1 pending application·491 citations·filing 1991–2001
Top patents by PatentIndex Score
32 records- 0183US5976319ADisrupting the flow from the smelt spout of a recovery boilerAHLSTROM MACHINERY OY·Filed 1997·Granted Nov 2, 1999·42 cites·20 claims
- 0276US6090240AMethod of inhibiting scaling in black liquor evaporatorsAHLSTROM MACHINERY OY·Filed 1998·Granted Jul 18, 2000·29 cites·22 claims
- 0372US6030494AMethod of treating melodorous gases of a pulp millAHLSTROM MACHINERY OY·Filed 1998·Granted Feb 29, 2000·31 cites·11 claims
- 0465US5996806AMethod and apparatus for treating filler-containing material such as recycled fibersAHLSTROM MACHINERY OY·Filed 1995·Granted Dec 7, 1999·16 cites·20 claims
- 0562US5897788AMethod and apparatus for cleaning a filter drum used for thickening lime mudAHLSTROM MACHINERY OY·Filed 1994·Granted Apr 27, 1999·34 cites·20 claims
- 0662US5787844AEconomizer systemAHLSTROM MACHINERY OY·Filed 1996·Granted Aug 4, 1998·33 cites·19 claims
- 0761US5716496AMethod and apparatus for treatment of black liquorAHLSTROM MACHINERY OY·Filed 1995·Granted Feb 10, 1998·14 cites·20 claims
- 0859US5641402AMultistage disc filterAHLSTROM MACHINERY OY·Filed 1994·Granted Jun 24, 1997·22 cites·20 claims
- 0957US5632859AIntergral pulp mill and method of constructing an integral millAHLSTROM MACHINERY OY·Filed 1991·Granted May 27, 1997·16 cites·17 claims
- 1057US5620596AFalling film cross filtration apparatusAHLSTROM MACHINERY OY·Filed 1994·Granted Apr 15, 1997·22 cites·19 claims
- 1156US5788813AClarifying and/or filtering of green liquor and an apparatus thereforeAHLSTROM MACHINERY OY·Filed 1995·Granted Aug 4, 1998·12 cites·18 claims
- 1256US5618422ADisc filter sectorAHLSTROM MACHINERY OY·Filed 1994·Granted Apr 8, 1997·22 cites·21 claims
- 1353US6086713AMethod of treating pulpAHLSTROM MACHINERY OY·Filed 1998·Granted Jul 11, 2000·8 cites·20 claims
- 1452US5662790AAir contactor with foam separation vessel systemAHLSTROM MACHINERY OY·Filed 1995·Granted Sep 2, 1997·18 cites·18 claims
- 1549US6119867AScreen cylinderAHLSTROM MACHINERY OY·Filed 1996·Granted Sep 19, 2000·20 cites·11 claims
- 1649US6024028AProtection of the air ports of a recovery boilerAHLSTROM MACHINERY OY·Filed 1998·Granted Feb 15, 2000·14 cites·25 claims
- 1746US6074521AMethod of separating impurities from lime and lime sludgeAHLSTROM MACHINERY OY·Filed 1996·Granted Jun 13, 2000·13 cites·19 claims
- 1845US5769156AEconomizer system with side-by-side economizersAHLSTROM MACHINERY OY·Filed 1996·Granted Jun 23, 1998·17 cites·22 claims
- 1945US2001006484A1Method and apparatus for mixing a second medium with a first mediumAHLSTROM MACHINERY OY·Filed 2001·Application pending·0 cites
- 2044US6096120ADeaeration vesselAHLSTROM MACHINERY OY·Filed 1996·Granted Aug 1, 2000·20 cites·19 claims
- 2143US5989018ALime sludge feed arrangementAHLSTROM MACHINERY OY·Filed 1997·Granted Nov 23, 1999·12 cites·22 claims
- 2242US5837096AFalling film evaporatorAHLSTROM MACHINERY OY·Filed 1995·Granted Nov 17, 1998·18 cites·14 claims
- 2342US5707490AMethod of recovering energy from waste liquors from pulp processesAHLSTROM MACHINERY OY·Filed 1996·Granted Jan 13, 1998·7 cites·18 claims
- 2441US5960962AScreenAHLSTROM MACHINERY OY·Filed 1998·Granted Oct 5, 1999·5 cites·22 claims
- 2541US5618443AClarification of green liquor by falling film cross-flow filtrationAHLSTROM MACHINERY OY·Filed 1995·Granted Apr 8, 1997·12 cites·30 claims
- 2640US5776304AMethod and apparatus for treating filler-containing material, such as recycled fibersAHLSTROM MACHINERY OY·Filed 1994·Granted Jul 7, 1998·6 cites·26 claims
- 2736US5800674AMethod and apparatus for improving a batch cooking processAHLSTROM MACHINERY OY·Filed 1996·Granted Sep 1, 1998·4 cites·16 claims
- 2835US5705068AFeeding suspension to a disc filterAHLSTROM MACHINERY OY·Filed 1995·Granted Jan 6, 1998·10 cites·27 claims
- 2933US5879511ARecovery boiler operation with black liquor feed in separate liquid stream and solid streamAHLSTROM MACHINERY OY·Filed 1997·Granted Mar 9, 1999·2 cites·20 claims
- 3030US5766414AMethod of bleaching cellulose pulp with peroxide under elevated pressure in a first vessel and atmospheric pressure in second vesselAHLSTROM MACHINERY OY·Filed 1996·Granted Jun 16, 1998·5 cites·18 claims
- 3127US5753080AMethod and arrangement for recovering fiber using disc filtrationAHLSTROM MACHINERY OY·Filed 1995·Granted May 19, 1998·5 cites·16 claims
- 3224US5672246AIncreasing the capacity of a recovery boiler by withdrawing some of the exhaust gases from the furnace sectionAHLSTROM MACHINERY OY·Filed 1995·Granted Sep 30, 1997·2 cites·20 claims
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