Inventor · disambiguated record
Charles David Armstrong
Also filed as: ARMSTRONG CHARLES D · ARMSTRONG CHARLES DAVID
31 granted patents·8 pending applications·126 citations·filing 2008–2020
95Inventor score
Files withBAKER HUGHES INC19ARMSTRONG CHARLES DAVID7BAKER HUGHES A GE CO LLC7WILSON MICHAEL B2ARMSTRONG CHARLES D1
Top patents by PatentIndex Score
39 records- 0197US10190038B2Method of using sophorolipids in well treatment operationsBAKER HUGHES INC·Filed 2015·Granted Jan 29, 2019·24 cites·5 claims
- 0296US9683164B2Method of using sophorolipids or mannosylerythritol lipids as acid corrosion inhibitors in well treatment operationsBAKER HUGHES INC·Filed 2015·Granted Jun 20, 2017·30 cites·19 claims
- 0395US9884986B2Method of using biosurfactants as acid corrosion inhibitors in well treatment operationsBAKER HUGHES INC·Filed 2015·Granted Feb 6, 2018·21 cites·20 claims
- 0489US8486867B2Method of fracturing using mannanohydrolase enzyme breakerARMSTRONG CHARLES DAVID·Filed 2011·Granted Jul 16, 2013·8 cites·20 claims
- 0587US10125303B2Compositions and methods for cementing a wellbore using microbes or enzymesWILSON MICHAEL B·Filed 2015·Granted Nov 13, 2018·8 cites·23 claims
- 0685US10556815B2Compositions for mitigating hydrogen sulfide contamination using a recombinant protein with an affinity tag fused to a hydrogen sulfide scavenging enzymeBAKER HUGHES·Filed 2017·Granted Feb 11, 2020·2 cites·2 claims
- 0783US9587159B2Enzymes for removing sulfurous compounds in downhole fluidsBAKER HUGHES INC·Filed 2014·Granted Mar 7, 2017·4 cites·5 claims
- 0883US8517095B2Method of using hexose oxidases to create hydrogen peroxide in aqueous well treatment fluidsARMSTRONG CHARLES DAVID·Filed 2010·Granted Aug 27, 2013·4 cites·39 claims
- 0982US8863838B2Use of hexose oxidases to create hydrogen peroxide in aqueous well treatment fluidsBAKER HUGHES INC·Filed 2013·Granted Oct 21, 2014·3 cites·26 claims
- 1081US8844629B2Method of fracturing using alkaliphile derived enzyme breakerARMSTRONG CHARLES DAVID·Filed 2012·Granted Sep 30, 2014·4 cites·22 claims
- 1179US9090814B2Well treatment fluids containing an ylide or a vitamin B and methods of using the sameARMSTRONG CHARLES DAVID·Filed 2012·Granted Jul 28, 2015·4 cites·23 claims
- 1279US8096360B2Alkaline β-mannanase containing compositions useful for the hydrolysis of guar in high pH environments and methods related theretoARMSTRONG CHARLES DAVID·Filed 2008·Granted Jan 17, 2012·7 cites·22 claims
- 1378US8058212B2Method of fracturing using mannanohydrolase enzyme breakerARMSTRONG CHARLES DAVID·Filed 2009·Granted Nov 15, 2011·2 cites·20 claims
- 1476US9505044B2Method of treating produced or flowback water with nucleophilic agent to deactivate breakerBAKER HUGHES INC·Filed 2014·Granted Nov 29, 2016·3 cites·19 claims
- 1575US10913672B2Compositions for mitigating hydrogen sulfide contamination using a recombinant protein with an affinity tag fused to a hydrogen sulfide scavenging enzymeBAKER HUGHES A GE CO LLC·Filed 2019·Granted Feb 9, 2021·0 cites·4 claims
- 1671US9822594B2Method of treating produced or flowback water with nucleophilic agent to deactivate breakerBAKER HUGHES INC·Filed 2016·Granted Nov 21, 2017·1 cites·20 claims
- 1770US10913673B2Compositions for mitigating hydrogen sulfide contamination using a recombinant protein with an affinity tag fused to a hydrogen sulfide scavenging enzymeBAKER HUGHES A GE CO LLC·Filed 2019·Granted Feb 9, 2021·0 cites·4 claims
- 1868US11162017B2Decreasing foulant deposition on at least one surface by contacting the surface(s) with at least one proteinBAKER HUGHES A GE CO LLC·Filed 2018·Granted Nov 2, 2021·0 cites·12 claims
- 1968US10934471B2Decreasing foulant deposition on at least one surface by contacting the surface(s) with at least one proteinBAKER HUGHES A GE CO LLC·Filed 2018·Granted Mar 2, 2021·0 cites·18 claims
- 2064US10053610B2Antifreeze proteins for use in downhole fluidsBAKER HUGHES INC·Filed 2017·Granted Aug 21, 2018·0 cites·9 claims
- 2161US10196554B2Decreasing foulant deposition on at least one surface by contacting the surface(s) with at least one proteinBAKER HUGHES INC·Filed 2016·Granted Feb 5, 2019·0 cites·7 claims
- 2261US9790251B2Conversion of cellulose into simple sugarsBAKER HUGHES INC·Filed 2014·Granted Oct 17, 2017·0 cites·17 claims
- 2361US8833457B2Sulfates and phosphates as allosteric effectors in mannanohydrolase enzyme breakersARMSTRONG CHARLES DAVID·Filed 2011·Granted Sep 16, 2014·1 cites·26 claims
- 2460US9624418B2Antifreeze proteins for use in downhole fluidsBAKER HUGHES INC·Filed 2015·Granted Apr 18, 2017·0 cites·8 claims
- 2559US10822541B2Method of using Sophorolipids in well treatment operationsBAKER HUGHES A GE CO LLC·Filed 2019·Granted Nov 3, 2020·0 cites·20 claims
- 2656US2015267105A1Anionic polysaccharide polymers for viscosified fluidsBAKER HUGHES INC·Filed 2014·Application pending·0 cites
- 2755US10731072B2Method of preventing or mitigating formation of metal sulfide scales during oil and gas productionBAKER HUGHES A GE CO LLC·Filed 2016·Granted Aug 4, 2020·0 cites·7 claims
- 2854US2016230068A1Anionic polysaccharide polymers for viscosified fluidsBAKER HUGHES INC·Filed 2016·Application pending·0 cites
- 2951US10660978B2Decreasing microorganisms in fluids using ultrasonic wave technologiesBAKER HUGHES INC·Filed 2016·Granted May 26, 2020·0 cites·15 claims
- 3050US2017137790A1Enzymes for removing sulfurous compounds in downhole fluidsBAKER HUGHES INC·Filed 2017·Application pending·0 cites
- 3150US2020299155A1Biocidal compositions including a phosphonium quaternary cationic surfactant and methods for using sameRHODIA OPERATIONS·Filed 2020·Application pending·0 cites
- 3249US2016039697A1Method of mitigating hydrogen sulfide or mercaptan contamination with an enzyme based scavengerBAKER HUGHES INC·Filed 2014·Application pending·0 cites
- 3348US11193054B2Biologically mediated precipitation of carbonates for use in oilfield applicationsBAKER HUGHES A GE CO LLC·Filed 2017·Granted Dec 7, 2021·0 cites·9 claims
- 3448US11060013B2Methods of controlling fines migration in a wellBAKER HUGHES INC·Filed 2017·Granted Jul 13, 2021·0 cites·15 claims
- 3544US9845422B2Methods of delivering calcium carbonate producing microbes or enzymes downholeWILSON MICHAEL B·Filed 2015·Granted Dec 19, 2017·0 cites·23 claims
- 3644US2018022983A1Flavonoid and plant phenolic acid additives for downhole fluidsARMSTRONG CHARLES D·Filed 2017·Application pending·0 cites
- 3743US2017233628A1Enzyme destabilizers for destabilizing enzymes producing sulfur containing compounds in downhole fluidsBAKER HUGHES INC·Filed 2017·Application pending·0 cites
- 3841US10947433B2Proteins for removing sulfurous compounds and/or acidic compounds in downhole fluidsBAKER HUGHES LLC·Filed 2015·Granted Mar 16, 2021·0 cites·13 claims
- 3931US2015284625A1Composition and method for treating subterranean formations using a gel composition containing nanoparticlesBAKER HUGHES INC·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →