Inventor
CHANG KIN-TAI
US32 patents
⚠️ This page may combine multiple inventors who share the name “CHANG KIN-TAI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NALCO CO
11 patentsUS7300973B2Nov 27, 2007
Composition for recovering hydrocarbon fluids from a subterranean reservoir
NALCO CO61 citations97
US7928042B2Apr 19, 2011
Composition and method for recovering hydrocarbon fluids from a subterranean reservoir
NALCO CO21 citations92
US7902127B2Mar 8, 2011
Composition and method for recovering hydrocarbon fluids from a subterranean reservoir
NALCO CO20 citations92
US7897546B2Mar 1, 2011
Composition and method for recovering hydrocarbon fluids from a subterranean reservoir
NALCO CO50 citations92
US7504438B1Mar 17, 2009
Demulsifiers, their preparation and use in oil bearing formations
NALCO CO20 citations92
US7947630B2May 24, 2011
Compositions comprising at least two different polymeric microparticles and methods for recovering hydrocarbon fluids from a subterranean reservoir
NALCO CO23 citations90
US7888296B2Feb 15, 2011
Composition and method for recovering hydrocarbon fluids from a subterranean reservoir
NALCO CO16 citations84
US7417011B2Aug 26, 2008
Method and composition for recovering hydrocarbon fluids from a subterranean reservoir
NALCO CO9 citations83
US9206346B2Dec 8, 2015
Compositions and methods for diverting injected fluids to achieve improved hydrocarbon fluid recovery
NALCO CO7 citations82
US7989401B2Aug 2, 2011
Block copolymers for recovering hydrocarbon fluids from a subterranean reservoir
NALCO CO14 citations82
US7053127B1May 30, 2006
Quaternized amido cyclic amine surfactant
NALCO CO7 citations74
ECOLAB USA INC
5 patentsUS10655055B2May 19, 2020
Weak gel system for chemical enhanced oil recovery
ECOLAB USA INC2 citations68
US10253609B2Apr 9, 2019
Permeability of subterranean reservoirs using acid diversion
ECOLAB USA INC1 citations62
US10214679B2Feb 26, 2019
Composition and method for recovering hydrocarbon fluids from a subterranean reservoir
ECOLAB USA INC0 citations51
US10370585B2Aug 6, 2019
Weak gel system for chemical enhanced oil recovery
ECOLAB USA INC0 citations48
US9169430B2Oct 27, 2015
Chemical treatment method and additive used to treat fines migration and flow through porous media
ECOLAB USA INC1 citations43
CHAMPIONX USA INC
4 patentsUS10889749B2Jan 12, 2021
Composition and method for recovering hydrocarbon fluids from a subterranean reservoir
CHAMPIONX USA INC0 citations62
US11597864B2Mar 7, 2023
Fluid diversion composition in well stimulation
CHAMPIONX USA INC0 citations59
US10883036B2Jan 5, 2021
Fluid diversion composition in well stimulation
CHAMPIONX USA INC0 citations59
US11136493B2Oct 5, 2021
Friction-reducing compositions formulated with highly concentrated brine
CHAMPIONX USA INC0 citations55
ONDEO NALCO ENERGY SERV LP
3 patentsUS6454003B1Sep 24, 2002
Composition and method for recovering hydrocarbon fluids from a subterranean reservoir
ONDEO NALCO ENERGY SERV LP265 citations98
US6984705B2Jan 10, 2006
Composition and method for recovering hydrocarbon fluids from a subterranean reservoir
ONDEO NALCO ENERGY SERV LP75 citations96
US6569983B1May 27, 2003
Method and composition for recovering hydrocarbon fluids from a subterranean reservoir
ONDEO NALCO ENERGY SERV LP105 citations96