Inventor · disambiguated record
J. Robert Prough
Also filed as: PROUGH J ROBERT · PROUGH ROBERT J
51 granted patents·9 pending applications·1,106 citations·filing 1984–2006
99Inventor score
Top patents by PatentIndex Score
60 records- 0198US5476572AChip feeding for a continuous digesterKAMYR INC·Filed 1994·Granted Dec 19, 1995·62 cites·19 claims
- 0295US5968314AChip feeding for a digesterAHLSTROM MACHINERY INC·Filed 1997·Granted Oct 19, 1999·43 cites·26 claims
- 0394US5622598AChip pumping to a digesterAHLSTROM MACHINERY INC·Filed 1995·Granted Apr 22, 1997·55 cites·21 claims
- 0494US5489363APulping with low dissolved solids for improved pulp strengthKAMYR INC·Filed 1993·Granted Feb 6, 1996·35 cites·41 claims
- 0593US6346167B2Dissolved solids control in pulp productionANDRITZ AHLSTROM INC·Filed 2001·Granted Feb 12, 2002·19 cites·9 claims
- 0693US5700355AChip feeding for a continuous digesterAHLSTROM MACHINERY INC·Filed 1995·Granted Dec 23, 1997·36 cites·11 claims
- 0793US5547012ADissolved solids control in pulp productionKAMYR INC·Filed 1993·Granted Aug 20, 1996·33 cites·31 claims
- 0892US6325890B1Feeding comminuted fibrous materialANDRITZ AHLSTROM INC·Filed 2000·Granted Dec 4, 2001·29 cites·8 claims
- 0992US5620562ADissolved solids control in pulp productionAHLSTROM MACHINERY INC·Filed 1996·Granted Apr 15, 1997·29 cites·30 claims
- 1090US5662775AContinuous digester with dissolved solids handlingAHLSTROM MACHINERY INC·Filed 1995·Granted Sep 2, 1997·35 cites·16 claims
- 1189US6841042B2Feeding comminuted fibrous material using high pressure screw and centrifugal pumpsANDRITZ INC·Filed 2003·Granted Jan 11, 2005·24 cites·12 claims
- 1289US6368453B1Chip feeding to a comminuted cellulosic fibrous material treatment vesselANDRITZ INC·Filed 2000·Granted Apr 9, 2002·14 cites·12 claims
- 1389US5536366ADigester system for implementing low dissolved solids profilingAHLSTROM MACHINERY INC·Filed 1993·Granted Jul 16, 1996·33 cites·13 claims
- 1489US5338366AAcid pre-hydrolysis reactor systemKAMYR INC·Filed 1993·Granted Aug 16, 1994·93 cites·29 claims
- 1589US4946556AMethod of oxygen delignifying wood pulp with between stage washingKAMYR INC·Filed 1989·Granted Aug 7, 1990·34 cites·20 claims
- 1688US6451163B2Method of handling comminuted cellulosic fibrous slurry in a cylindrical vesselANDRITZ INC·Filed 2001·Granted Sep 17, 2002·13 cites·12 claims
- 1788US6436233B1Feeding cellulose material to a treatment vesselANDRITZ INC·Filed 2000·Granted Aug 20, 2002·15 cites·21 claims
- 1888US6280568B1Dissolved organic material control in a cellulose pulp continuous digesterANDRITZ AHLSTROM INC·Filed 2000·Granted Aug 28, 2001·12 cites·7 claims
- 1988US5736006AMethod and apparatus for pulping with controlled heating to improve delignification and pulp strengthAHLSTROM MACHINERY INC·Filed 1996·Granted Apr 7, 1998·38 cites·20 claims
- 2086US6551462B2System for feeding comminuted fibrous materialANDRITZ INC·Filed 2001·Granted Apr 22, 2003·13 cites·15 claims
- 2186US6447645B1Feeding cellulose material to a treatment vesselANDRITZ INC·Filed 2001·Granted Sep 10, 2002·13 cites·11 claims
- 2286US6379504B1Apparatus for pulping sawdustANDRITZ INC·Filed 2001·Granted Apr 30, 2002·17 cites·10 claims
- 2386US6086712ADOM control in cellulose pulp productionAHLSTROM MACHINERY INC·Filed 1998·Granted Jul 11, 2000·20 cites·43 claims
- 2486US5849151AContinuous digester having means for implementing low dissolved solids profilingAHLSTROM MACHINERY INC·Filed 1997·Granted Dec 15, 1998·27 cites·20 claims
- 2584US5849150ALow dissolved solids control in pulp productionAHLSTROM MACHINERY INC·Filed 1996·Granted Dec 15, 1998·18 cites·16 claims
- 2683US6199299B1Feeding of comminuted fibrous material to a pulping processANDRITZ AHLSTROM INC·Filed 1998·Granted Mar 13, 2001·31 cites·32 claims
- 2782US5766418AHandling fibrous material used to produce cellulose pulpAHLSTROM MACHINERY INC·Filed 1996·Granted Jun 16, 1998·29 cites·14 claims
- 2881US6451172B1In-line drainer enhancementsANDRITZ INC·Filed 2000·Granted Sep 17, 2002·9 cites·27 claims
- 2981US5985096AVertical pulping digester having substantially constant diameterAHLSTROM MACHINERY INC·Filed 1997·Granted Nov 16, 1999·26 cites·22 claims
- 3078US6159337ADissolved organic materials control in cellulose pulp productionANDRITZ AHLSTROM INC·Filed 1999·Granted Dec 12, 2000·13 cites·19 claims
- 3175US5824188AMethod of controlling the pressure of a continuous digester using an extraction-dilutionAHLSTROM MACHINERY INC·Filed 1996·Granted Oct 20, 1998·21 cites·17 claims
- 3275US5547546AChip bin with steaming control and a gas vent containing a vacuum and pressure relief deviceAHLSTROM MACHINERY INC·Filed 1994·Granted Aug 20, 1996·22 cites·18 claims
- 3374US5575890AMethod for selectively increasing the sulfide ion concentration and sulfidity of kraft cooking liquor during kraft cooking of woodKAMYR INC·Filed 1994·Granted Nov 19, 1996·22 cites·14 claims
- 3474US4731160ADrainage characteristics of mechanical pulpKAMYR INC·Filed 1986·Granted Mar 15, 1988·23 cites·7 claims
- 3571US6468006B1High pressure feeder having restriction ramp in high pressure inletANDRITZ INC·Filed 2000·Granted Oct 22, 2002·12 cites·5 claims
- 3670US6669410B2High pressure feeder having smooth pocket in rotorANDRITZ INC·Filed 2003·Granted Dec 30, 2003·11 cites·12 claims
- 3769US5401361ACompletely coutercurrent cook continuous digesterKAMYR INC·Filed 1992·Granted Mar 28, 1995·18 cites·18 claims
- 3869US4577974AMedium consistency mixer rotor and stator constructionKAMYR INC·Filed 1984·Granted Mar 25, 1986·27 cites·11 claims
- 3968US5958181AContinuous cooking with a two-stage cool impregnationAHLSTROM MACHINERY INC·Filed 1997·Granted Sep 28, 1999·14 cites·18 claims
- 4067US6616384B2High pressure feeder having smooth pocket in rotorANDRITZ INC·Filed 2002·Granted Sep 9, 2003·10 cites·17 claims
- 4163US6432264B2Method of making a vessel assembly for handling comminuted cellulosic fibrous materialANDRITZ INC·Filed 2001·Granted Aug 13, 2002·1 cites·5 claims
- 4262US6325888B1Method for pulping sawdustANDRITZ AHLSTROM INC·Filed 1995·Granted Dec 4, 2001·11 cites·20 claims
- 4360US7560008B2Extraction with compaction and springback considerationsANDRITZ INC·Filed 2006·Granted Jul 14, 2009·0 cites·9 claims
- 4458US4596631AMethod of removing latency from medium consistency pulps by pumping the pulpKAMYR INC·Filed 1984·Granted Jun 24, 1986·13 cites·13 claims
- 4557USH1681HDischarge from pulping vessels without the aid of mechanical agitationAHLSTROM MACHINERY INC·Filed 1995·Granted Oct 7, 1997·9 cites·20 claims
- 4655US6280575B1Frusto-conical outlet for a cellulose material treatment vesselANDRITZ AHLSTROM INC·Filed 1999·Granted Aug 28, 2001·6 cites·5 claims
- 4753US2003089466A1Chip feeding to a comminuted cellulosic fibrous material treatment vesselANDRITZ INC·Filed 2002·Application pending·0 cites
- 4853US2003089470A1Chip feeding to a comminuted cellulosic fibrous material treatment vesselANDRITZ INC·Filed 2002·Application pending·0 cites
- 4953US2003089469A1Chip feeding to a comminuted cellulosic fibrous material treatment vesselANDRITZ INC·Filed 2002·Application pending·0 cites
- 5053US2003089468A1Chip feeding to a comminuted cellulosic fibrous material treatment vesselANDRITZ INC·Filed 2002·Application pending·0 cites
Showing the top 50 of 60 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →