Inventor · disambiguated record
Manilal S. Dahanayake
Also filed as: DAHANAYAKE MANILAL · DAHANAYAKE MANILAL S
53 granted patents·5 pending applications·1,149 citations·filing 1989–2016
99Inventor score
Top patents by PatentIndex Score
58 records- 0197US6831108B2Viscoelastic surfactant fluids and related methods of useRHODIA·Filed 2001·Granted Dec 14, 2004·111 cites·3 claims
- 0296US7461694B2Methods for recovering oil from an oil reservoirRHODIA·Filed 2005·Granted Dec 9, 2008·30 cites·11 claims
- 0395US7279446B2Viscoelastic surfactant fluids having enhanced shear recovery, rheology and stability performanceSCHLUMBERGER TECHNOLOGY CORP·Filed 2005·Granted Oct 9, 2007·67 cites·11 claims
- 0495US5914310AAmphoteric surfactants having multiple hydrophobic and hydrophilic groupsRHODIA·Filed 1997·Granted Jun 22, 1999·99 cites·19 claims
- 0593US5071463ADelivery system for agricultural chemicalsISP INVESTMENTS INC·Filed 1989·Granted Dec 10, 1991·51 cites·2 claims
- 0692US6204297B1Nonionic gemini surfactantsRHODIA·Filed 1996·Granted Mar 20, 2001·95 cites·6 claims
- 0792US5643498AQuaternary cationic surfactants having multiple hydrophobic and hydrophilic groupsRHONE POULENC INC·Filed 1994·Granted Jul 1, 1997·51 cites·20 claims
- 0889US6358914B1Surfactant compositions with enhanced soil release properties containing a cationic gemini surfactantFiled 1999·Granted Mar 19, 2002·69 cites·13 claims
- 0988US9732268B2Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluidRHODIA OPERATIONS·Filed 2013·Granted Aug 15, 2017·5 cites·16 claims
- 1088US5160528ADelivery system for agricultural chemicalsISP INVESTMENTS INC·Filed 1990·Granted Nov 3, 1992·43 cites·13 claims
- 1187US8985206B2Enhanced foam stability applications and methodsMORVAN MIKEL·Filed 2012·Granted Mar 24, 2015·13 cites·22 claims
- 1286US9062238B2Methods and compositions for viscosifying heavy aqueous brinesKESAVAN SUBRAMANIAN·Filed 2010·Granted Jun 23, 2015·7 cites·29 claims
- 1385US7772164B2Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluidRHODIA·Filed 2007·Granted Aug 10, 2010·8 cites·23 claims
- 1484US7378378B2Rheology enhancersSCHLUMBERGER TECHNOLOGY CORP·Filed 2006·Granted May 27, 2008·11 cites·28 claims
- 1584US5686024AAqueous dispersion of a surface active polymer having enhanced performance propertiesRHONE POULENC SURFACTANTS & SP·Filed 1995·Granted Nov 11, 1997·65 cites·24 claims
- 1683US8222194B2Cleaning compositions incorporating green solvents and methods for useTRIVEDI SATYEN·Filed 2009·Granted Jul 17, 2012·14 cites·26 claims
- 1783US7786179B2Demulsifiers in solvent base for separating emulsions and methods of useRHODIA·Filed 2009·Granted Aug 31, 2010·12 cites·40 claims
- 1881US6242404B1Enhanced soil release polymer compositionsRHODIA·Filed 1997·Granted Jun 5, 2001·37 cites·20 claims
- 1980US6476168B1Emulsions having activating agents of alkoxylates of 6, 6-dimethylbicyclo [3.1.1] hept-2-ene-2-ethanolRHODIA·Filed 2001·Granted Nov 5, 2002·17 cites·27 claims
- 2079US5925714ASurfactant for self-inverting polyacrylmidesSNF SA·Filed 1994·Granted Jul 20, 1999·37 cites·9 claims
- 2178US5156666ADelivery system for agricultural chemicalsISP INVESTMENTS INC·Filed 1990·Granted Oct 20, 1992·24 cites·16 claims
- 2275US5643864AAnionic surfactants having multiple hydrophobic and hydrophilic groupsRHONE POULENC INC·Filed 1994·Granted Jul 1, 1997·42 cites·14 claims
- 2374US7629296B2Composition and method for thickening heavy aqueous brines with cationic guarRHODIA·Filed 2005·Granted Dec 8, 2009·4 cites·18 claims
- 2472US8524642B2Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluidLI FANG·Filed 2011·Granted Sep 3, 2013·1 cites·16 claims
- 2572US7779913B2Methods for recovering oil from an oil reservoirRHODIA·Filed 2008·Granted Aug 24, 2010·2 cites·18 claims
- 2672US7770642B2Methods for recovering oil from an oil reservoirRHODIA·Filed 2008·Granted Aug 10, 2010·2 cites·6 claims
- 2771US8022016B2Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluidRHODIA·Filed 2010·Granted Sep 20, 2011·1 cites·28 claims
- 2869US5176736ADelivery system for agricultural chemicalsISP INVESTMENTS INC·Filed 1991·Granted Jan 5, 1993·15 cites·10 claims
- 2967US8133924B2Demulsifiers and methods for use in pharmaceutical applicationsTALINGTING-PABALAN RUELA·Filed 2009·Granted Mar 13, 2012·1 cites·25 claims
- 3066US7789144B2Methods for recovering oil from an oil reservoirRHODIA·Filed 2008·Granted Sep 7, 2010·1 cites·7 claims
- 3165US5656586AAmphoteric surfactants having multiple hydrophobic and hydrophilic groupsRHONE POULENC INC·Filed 1994·Granted Aug 12, 1997·24 cites·16 claims
- 3264US6277801B1Low foaming surfactant compositions useful in highly alkaline caustic cleanersRHODIA·Filed 1999·Granted Aug 21, 2001·21 cites·8 claims
- 3364US6004466ARecovery and reuse of sugar-derived nonionic surfactants from aqueous solutionsRHODIA·Filed 1998·Granted Dec 21, 1999·22 cites·11 claims
- 3463US5945393ANonionic gemini surfactantsRHODIA·Filed 1997·Granted Aug 31, 1999·16 cites·14 claims
- 3562US7671099B2Method for spearation crude oil emulsionsRHODIA·Filed 2008·Granted Mar 2, 2010·1 cites·6 claims
- 3662US5919980ARecovery and reuse of amphoteric surfactants from aqueous solutionsRHODIA·Filed 1997·Granted Jul 6, 1999·18 cites·31 claims
- 3760US7404442B2Method of recycling fracturing fluids using a self-degrading foaming compositionRHODIA·Filed 2006·Granted Jul 29, 2008·5 cites·13 claims
- 3859US7784540B2Method for recovering oil from an oil reservoirRHODIA·Filed 2008·Granted Aug 31, 2010·0 cites·11 claims
- 3958US7789143B2Methods for recovering oil from an oil reservoirRHODIA·Filed 2008·Granted Sep 7, 2010·0 cites·10 claims
- 4057US5811384ANonionic gemini surfactantsRHODIA·Filed 1997·Granted Sep 22, 1998·16 cites·36 claims
- 4156US8124570B2Multicomponent viscoelastic surfactant fluid and method of using as a fracturing fluidLI FANG·Filed 2011·Granted Feb 28, 2012·0 cites·19 claims
- 4255US5250499ADelivery system for agricultural chemicalsISP INVESTMENTS INC·Filed 1990·Granted Oct 5, 1993·7 cites·23 claims
- 4349US9035104B2Process for making polyglycerol ethers of fatty alcoholsDAHANAYAKE MANILAL S·Filed 2011·Granted May 19, 2015·0 cites·19 claims
- 4449US6207058B1Recovery and reuse of nonionic surfactants from aqueous solutionsRHODIA·Filed 1999·Granted Mar 27, 2001·11 cites·9 claims
- 4549US5843317ARecovery and reuse of anionic surfactants from aqueous solutionsRHODIA·Filed 1997·Granted Dec 1, 1998·16 cites·18 claims
- 4649US5783554ACleaning compositions containing anionic surfactants having multiple hydrophobic and hydrophilic groupsRHODIA·Filed 1997·Granted Jul 21, 1998·11 cites·22 claims
- 4749US5045232ALow viscosity defoaming/antiforming formulationsRHONE POULENC SPEC CHIM·Filed 1989·Granted Sep 3, 1991·10 cites·14 claims
- 4847US6121222AAnionic surfactants having multiple hydrophobic and hydrophilic groupsRHODIA·Filed 1996·Granted Sep 19, 2000·10 cites·20 claims
- 4945US6013185ARecovery and reuse of nonionic surfactants from aqueous solutionsRHODIA·Filed 1997·Granted Jan 11, 2000·9 cites·14 claims
- 5043US2007244204A1Rheology enhancers in non-oilfield applicationsPRAT EVELYNE·Filed 2006·Application pending·0 cites
Showing the top 50 of 58 patent records by PatentIndex Score.
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