Inventor · disambiguated record
Marion A. Keyes, Iv
Also filed as: KEYES IV MARION A · KEYES MARION · KEYES MARION A · KEYES MARION A IV
51 granted patents·4 pending applications·1,552 citations·filing 1976–2010
99Inventor score
Files withBABCOCK & WILCOX CO29ELSAG INT BV7ROSEMOUNT ANALYTICAL INC6FISHER ROSEMOUNT SYSTEMS INC5KEYES IV MARION A2
Top patents by PatentIndex Score
55 records- 0198US7206646B2Method and apparatus for performing a function in a plant using process performance monitoring with process equipment monitoring and controlFISHER ROSEMOUNT SYSTEMS INC·Filed 2001·Granted Apr 17, 2007·342 cites·43 claims
- 0295US8417595B2Economic calculations in a process control systemKEYES MARION A·Filed 2010·Granted Apr 9, 2013·41 cites·41 claims
- 0394US7720727B2Economic calculations in process control systemFISHER ROSEMOUNT SYSTEMS INC·Filed 2004·Granted May 18, 2010·70 cites·26 claims
- 0493US7447612B2Appendable system and devices for data acquisition, analysis and controlFISHER ROSEMOUNT SYSTEMS INC·Filed 2006·Granted Nov 4, 2008·29 cites·20 claims
- 0593US4766553AHeat exchanger performance monitorKAYA AZMI·Filed 1987·Granted Aug 23, 1988·84 cites·9 claims
- 0693US4450722AWater level gauge with fault detectorBABCOCK & WILCOX CO·Filed 1982·Granted May 29, 1984·90 cites·10 claims
- 0792US5175678AMethod and procedure for neural control of dynamic processesELSAG INT BV·Filed 1990·Granted Dec 29, 1992·151 cites·1 claims
- 0892US4462261AMass and velocity flowmeterBABCOCK & WILCOX CO·Filed 1982·Granted Jul 31, 1984·53 cites·1 claims
- 0991US7035773B2Appendable system and devices for data acquisition, analysis and controlFISHER ROSEMOUNT SYSTEMS INC·Filed 2002·Granted Apr 25, 2006·50 cites·16 claims
- 1091US4477245AFlame monitoring safety, energy and fuel conservation systemBABCOCK & WILCOX CO·Filed 1982·Granted Oct 16, 1984·58 cites·8 claims
- 1189US8538732B2Appendable system and devices for data acquisition, analysis and controlKEYES IV MARION A·Filed 2010·Granted Sep 17, 2013·9 cites·28 claims
- 1289US6912889B2Generator monitoring, control and efficiencyROSEMOUNT ANALYTICAL INC·Filed 2002·Granted Jul 5, 2005·58 cites·17 claims
- 1386US7848906B2Appendable system and devices for data acquisition, analysis and controlFISHER ROSEMOUNT SYSTEMS INC·Filed 2008·Granted Dec 7, 2010·11 cites·9 claims
- 1483US5060132AMethod of modeling and control for delignification of pulpingELSAG INT BV·Filed 1989·Granted Oct 22, 1991·30 cites·1 claims
- 1582US6983640B1Generator monitoring, control and efficiencyROSEMOUNT ANALYTICAL INC·Filed 2003·Granted Jan 10, 2006·36 cites·4 claims
- 1681US8620779B2Economic calculations in a process control systemKEYES IV MARION A·Filed 2010·Granted Dec 31, 2013·4 cites·40 claims
- 1778US4834473AHolographic operator display for control systemsBABCOCK & WILCOX CO·Filed 1986·Granted May 30, 1989·33 cites·12 claims
- 1875US7568000B2Shared-use data processing for process control systemsROSEMOUNT ANALYTICAL·Filed 2001·Granted Jul 28, 2009·39 cites·40 claims
- 1975US5025665ANon-contacting on-line paper strength measuring systemELSAG INT BV·Filed 1989·Granted Jun 25, 1991·35 cites·8 claims
- 2075US4574746AProcess heater controlBABCOCK & WILCOX CO·Filed 1984·Granted Mar 11, 1986·23 cites·5 claims
- 2173US4549503AMaximum efficiency steam temperature control systemBABCOCK & WILCOX CO·Filed 1984·Granted Oct 29, 1985·25 cites·5 claims
- 2270US4627788AAdaptive gain compressor surge control systemBABCOCK & WILCOX CO·Filed 1984·Granted Dec 9, 1986·27 cites·3 claims
- 2369US6862915B2Oxygen analyzer with enhanced calibration and blow-backROSEMOUNT ANALYTICAL INC·Filed 2003·Granted Mar 8, 2005·8 cites·21 claims
- 2467US4697980AAdaptive gain compressor surge control systemBABCOCK & WILCOX CO·Filed 1985·Granted Oct 6, 1987·26 cites·2 claims
- 2566US4552026ASensor for a vortex shedding flowmeterBABCOCK & WILCOX CO·Filed 1984·Granted Nov 12, 1985·19 cites·5 claims
- 2657US5032977ASystem for modeling and control for delignification of pulpingELSAG INT BV·Filed 1989·Granted Jul 16, 1991·18 cites·2 claims
- 2757US4803052ACarbon monoxide detectorBABCOCK & WILCOX CO·Filed 1985·Granted Feb 7, 1989·19 cites·6 claims
- 2855US4574626AEnthalpy measurement for two phase substanceBABCOCK & WILCOX CO·Filed 1984·Granted Mar 11, 1986·14 cites·5 claims
- 2953US7103426B2Anticipatory high frequency noise compensation in a distributed process control systemROSEMOUNT ANALYTICAL INC·Filed 2003·Granted Sep 5, 2006·4 cites·31 claims
- 3053US4792888AException processing of operator displaysBABCOCK & WILCOX CO·Filed 1984·Granted Dec 20, 1988·16 cites·1 claims
- 3149US7527717B2Sulfur resistant sensorsROSEMOUNT ANALYTICAL INC·Filed 2003·Granted May 5, 2009·1 cites·6 claims
- 3245US4861233ACompressor surge control systemBABCOCK & WILCOX CO·Filed 1988·Granted Aug 29, 1989·13 cites·2 claims
- 3345US2005069455A1Chemical analyzer for sulfurROSEMOUNT ANALYTICAL INC·Filed 2003·Application pending·0 cites
- 3443US4561311ABridge excitation for sensor used on a vortex shedding flow meterBABCOCK & WILCOX CO·Filed 1984·Granted Dec 31, 1985·7 cites·4 claims
- 3541US4978425AMethod for controlling the degree of cooking in a digesterELSAG INT BV·Filed 1989·Granted Dec 18, 1990·9 cites·4 claims
- 3641US4577097AThree-mode analog controller with remote tuningBABCOCK & WILCOX CO·Filed 1982·Granted Mar 18, 1986·10 cites·9 claims
- 3741US4575334ALoss minimization combustion control systemBABCOCK & WILCOX CO·Filed 1984·Granted Mar 11, 1986·8 cites·1 claims
- 3840US4900232ACompressor surge control methodBABCOCK & WILCOX CO·Filed 1989·Granted Feb 13, 1990·10 cites·3 claims
- 3940US4685072ASteam generator on-line efficiency monitorBABCOCK & WILCOX CO·Filed 1985·Granted Aug 4, 1987·8 cites·7 claims
- 4040US2003085714A1Mass flow control in a process gas analyzerFiled 2001·Application pending·0 cites
- 4139US4612621ADistributed system for optimizing the performance of a plurality of multi-stage steam turbines using function blocksBABCOCK & WILCOX CO·Filed 1983·Granted Sep 16, 1986·7 cites·5 claims
- 4239US4412136ALoad control for energy convertersBABCOCK & WILCOX CO·Filed 1981·Granted Oct 25, 1983·9 cites·5 claims
- 4338US4470019ARate multiplier square root extractor with increased accuracy for transmitter applicationsBABCOCK & WILCOX CO·Filed 1982·Granted Sep 4, 1984·4 cites·6 claims
- 4438US4430573ALoad control for energy convertersBABCOCK & WILCOX CO·Filed 1981·Granted Feb 7, 1984·8 cites·3 claims
- 4538US2007021140A1Wireless power transmission systems and methodsKEYES MARION A IV·Filed 2005·Application pending·0 cites
- 4638US2002196836A1Emission monitoring system probe assembly for high-temperature applicationsFiled 2002·Application pending·0 cites
- 4737US4466296AForce transducer range adjusterBABCOCK & WILCOX CO·Filed 1982·Granted Aug 21, 1984·5 cites·4 claims
- 4837US4303982ASystem for the measurement and control of the heat input to a gas burnerBABCOCK & WILCOX CO·Filed 1979·Granted Dec 1, 1981·4 cites·4 claims
- 4934US4990219AApparatus for controlling the degree of cooking in a digesterELSAG INT BV·Filed 1989·Granted Feb 5, 1991·5 cites·5 claims
- 5034US4511882AFunction generatorBABCOCK & WILCOX CO·Filed 1982·Granted Apr 16, 1985·5 cites·3 claims
Showing the top 50 of 55 patent records by PatentIndex Score.
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