Inventor · disambiguated record
Kin-Tai Chang
Also filed as: CHANG KIN-TAI
32 granted patents·2 pending applications·1,054 citations·filing 1979–2020
97Inventor score
Top patents by PatentIndex Score
34 records- 0197US6454003B1Composition and method for recovering hydrocarbon fluids from a subterranean reservoirONDEO NALCO ENERGY SERV LP·Filed 2000·Granted Sep 24, 2002·265 cites·29 claims
- 0295US7897546B2Composition and method for recovering hydrocarbon fluids from a subterranean reservoirNALCO CO·Filed 2009·Granted Mar 1, 2011·50 cites·20 claims
- 0394US6569983B1Method and composition for recovering hydrocarbon fluids from a subterranean reservoirONDEO NALCO ENERGY SERV LP·Filed 2001·Granted May 27, 2003·105 cites·15 claims
- 0493US6984705B2Composition and method for recovering hydrocarbon fluids from a subterranean reservoirONDEO NALCO ENERGY SERV LP·Filed 2002·Granted Jan 10, 2006·75 cites·19 claims
- 0592US7300973B2Composition for recovering hydrocarbon fluids from a subterranean reservoirNALCO CO·Filed 2002·Granted Nov 27, 2007·61 cites·16 claims
- 0692US6729402B2Method of recovering hydrocarbon fluids from a subterranean reservoirONDEO NALCO ENERGY SERVICES·Filed 2002·Granted May 4, 2004·103 cites·31 claims
- 0791US7928042B2Composition and method for recovering hydrocarbon fluids from a subterranean reservoirNALCO CO·Filed 2009·Granted Apr 19, 2011·21 cites·20 claims
- 0891US7902127B2Composition and method for recovering hydrocarbon fluids from a subterranean reservoirNALCO CO·Filed 2009·Granted Mar 8, 2011·20 cites·19 claims
- 0991US4197174AMethod for producing bis-[4-(diphenylsulfonio) phenyl] sulfide bis-MX6AMERICAN CAN CO·Filed 1979·Granted Apr 8, 1980·26 cites·9 claims
- 1090US9120965B2Composition and method for recovering hydrocarbon fluids from a subterranean reservoirKURIAN PIOUS·Filed 2012·Granted Sep 1, 2015·12 cites·10 claims
- 1190US7888296B2Composition and method for recovering hydrocarbon fluids from a subterranean reservoirNALCO CO·Filed 2009·Granted Feb 15, 2011·16 cites·20 claims
- 1289US7947630B2Compositions comprising at least two different polymeric microparticles and methods for recovering hydrocarbon fluids from a subterranean reservoirNALCO CO·Filed 2009·Granted May 24, 2011·23 cites·20 claims
- 1389US5147555AMethods of controlling scale formation in aqueous systemsBETZ LABORATORIES·Filed 1991·Granted Sep 15, 1992·44 cites·21 claims
- 1488US9206346B2Compositions and methods for diverting injected fluids to achieve improved hydrocarbon fluid recoveryNALCO CO·Filed 2014·Granted Dec 8, 2015·7 cites·8 claims
- 1588US6787506B2Use of dispersion polymers as friction reducers in aqueous fracturing fluidsNALCO ENERGY SERVICES LP·Filed 2002·Granted Sep 7, 2004·86 cites·14 claims
- 1687US7989401B2Block copolymers for recovering hydrocarbon fluids from a subterranean reservoirNALCO CO·Filed 2009·Granted Aug 2, 2011·14 cites·20 claims
- 1787US5062962AMethods of controlling scale formation in aqueous systemsBETZ LABORATORIES·Filed 1990·Granted Nov 5, 1991·69 cites·18 claims
- 1882US7504438B1Demulsifiers, their preparation and use in oil bearing formationsNALCO CO·Filed 2001·Granted Mar 17, 2009·20 cites·18 claims
- 1980US10655055B2Weak gel system for chemical enhanced oil recoveryECOLAB USA INC·Filed 2019·Granted May 19, 2020·2 cites·21 claims
- 2077US7053127B1Quaternized amido cyclic amine surfactantNALCO CO·Filed 2002·Granted May 30, 2006·7 cites·22 claims
- 2174US9193898B2Environmentally friendly dispersion system used in the preparation of inverse emulsion polymersCHANG KIN-TAI·Filed 2011·Granted Nov 24, 2015·5 cites·15 claims
- 2269US10253609B2Permeability of subterranean reservoirs using acid diversionECOLAB USA INC·Filed 2014·Granted Apr 9, 2019·1 cites·17 claims
- 2366US11597864B2Fluid diversion composition in well stimulationCHAMPIONX USA INC·Filed 2020·Granted Mar 7, 2023·0 cites·19 claims
- 2464US9169430B2Chemical treatment method and additive used to treat fines migration and flow through porous mediaECOLAB USA INC·Filed 2012·Granted Oct 27, 2015·1 cites·19 claims
- 2563US10883036B2Fluid diversion composition in well stimulationCHAMPIONX USA INC·Filed 2018·Granted Jan 5, 2021·0 cites·9 claims
- 2662US10889749B2Composition and method for recovering hydrocarbon fluids from a subterranean reservoirCHAMPIONX USA INC·Filed 2018·Granted Jan 12, 2021·0 cites·9 claims
- 2761US10214679B2Composition and method for recovering hydrocarbon fluids from a subterranean reservoirECOLAB USA INC·Filed 2015·Granted Feb 26, 2019·0 cites·8 claims
- 2857US4247473AMethod for producing bis-[4-(diphenylsulfonio)pheny] sulfide bis-M.X6 photoinitiatorAMERICAN CAN CO·Filed 1979·Granted Jan 27, 1981·12 cites·10 claims
- 2956US8889603B2Compositions and methods for diverting injected fluids to achieve improved hydrocarbon fluid recoveryKURIAN PIOUS V·Filed 2009·Granted Nov 18, 2014·0 cites·14 claims
- 3055US10370585B2Weak gel system for chemical enhanced oil recoveryECOLAB USA INC·Filed 2016·Granted Aug 6, 2019·0 cites·18 claims
- 3153US2008085844A1Method and composition for recovering hydrocarbon fluids from a subterranean reservoirTREYBIG DUANE S·Filed 2007·Application pending·0 cites
- 3247US7417011B2Method and composition for recovering hydrocarbon fluids from a subterranean reservoirNALCO CO·Filed 2003·Granted Aug 26, 2008·9 cites·15 claims
- 3346US11136493B2Friction-reducing compositions formulated with highly concentrated brineCHAMPIONX USA INC·Filed 2016·Granted Oct 5, 2021·0 cites·20 claims
- 3445US2005065036A1Method and composition for recovering hydrocarbon fluids from a subterranean reservoirFiled 2004·Application pending·0 cites
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