Inventor · disambiguated record
Upali P. Weerasooriya
Also filed as: AESCHBACHER CYNTHIA L · WEERASOORIYA UPALI · WEERASOORIYA UPALI P · WEERASOORIYA UPALI PETER
34 granted patents·17 pending applications·398 citations·filing 1991–2022
97Inventor score
Files withUNIV TEXAS22WEERASOORIYA UPALI P8CONDEA VISTA CO7VISTA CHEMICAL5ULTIMATE EOR SERVICES LLC3
Top patents by PatentIndex Score
51 records- 0196US8211837B2Method of manufacture and use of large hydrophobe ether sulfate surfactants in enhanced oil recovery (EOR) applicationsWEERASOORIYA UPALI P·Filed 2010·Granted Jul 3, 2012·52 cites·51 claims
- 0296US8188012B2Process of using hard brine at high alkalinity for enhanced oil recovery (EOR) applicationsWEERASOORIYA UPALI P·Filed 2010·Granted May 29, 2012·23 cites·49 claims
- 0395US9296942B2Anionic polyalkoxy group comprising surfactants on basis of guerbet-alcohols, method of manufacture and use in enhanced oil recovery (EOR) applicationsUNIV TEXAS·Filed 2014·Granted Mar 29, 2016·14 cites·20 claims
- 0495US8841241B2Anionic polyalkoxy group comprising surfactants on basis of guerbet-alcohols, method of manufacture and use in enhanced oil recovery (EOR) applicationsWEERASOORIYA UPALI P·Filed 2011·Granted Sep 23, 2014·19 cites·35 claims
- 0590US5488148AProcess for sulfonating internal olefinsVISTA CHEMICAL·Filed 1993·Granted Jan 30, 1996·55 cites·9 claims
- 0689US8372788B2Styrylphenol alkoxylate sulfate as a new surfactant composition for enhanced oil recovery applicationsUNIV TEXAS·Filed 2011·Granted Feb 12, 2013·8 cites·61 claims
- 0789US5386045AProcess for alkoxylation of esters and products produced therefromVISTA CHEMICAL·Filed 1992·Granted Jan 31, 1995·40 cites·25 claims
- 0888US5220046AProcess for alkoxylation of esters and products produced therefromVISTA CHEMICAL·Filed 1991·Granted Jun 15, 1993·38 cites·14 claims
- 0986US9206347B2Quaternary ammonium surfactantsUNIV TEXAS·Filed 2013·Granted Dec 8, 2015·7 cites·17 claims
- 1086US6268517B1Method for producing surfactant compositionsCONDEA VISTA CO·Filed 2000·Granted Jul 31, 2001·36 cites·9 claims
- 1181US8459360B2Di-functional surfactants for enhanced oil recoveryPOPE GARY A·Filed 2010·Granted Jun 11, 2013·4 cites·20 claims
- 1278US9109152B2Compositions and methods for controlling the stability of ethersulfate surfactants at elevated temperaturesWEERASOORIYA UPALI P·Filed 2010·Granted Aug 18, 2015·3 cites·38 claims
- 1375US9862877B2Alkyl hydrophobe surfactantsUNIV TEXAS·Filed 2013·Granted Jan 9, 2018·2 cites·19 claims
- 1473US8822391B2Alkoxy carboxylate surfactantsWEERASOORIYA UPALI P·Filed 2011·Granted Sep 2, 2014·1 cites·45 claims
- 1571US9783729B2Alkoxy carboxylate surfactantsUNIV TEXAS·Filed 2014·Granted Oct 10, 2017·1 cites·30 claims
- 1671US5627121AProcess for preparing alkoxylation catalysts and alkoxylation processCONDEA VISTA CO·Filed 1995·Granted May 6, 1997·37 cites·16 claims
- 1768US6020509AMethod for producing surfactant compositionsCONDEA VISTA CO·Filed 1998·Granted Feb 1, 2000·34 cites·9 claims
- 1864US7119236B2Method of preparing alkoxylation catalysts and their use in alkoxylation processesHARCROS CHEMICALS INC·Filed 2004·Granted Oct 10, 2006·8 cites·53 claims
- 1962US10167421B2Phenol-alkoxylate co-solvent surfactant compositionUNIV TEXAS·Filed 2017·Granted Jan 1, 2019·0 cites·21 claims
- 2062US6147246AProcess for preparing alkoxylated dialkyl carbonate compoundsCONDEA VISTA CO·Filed 1999·Granted Nov 14, 2000·11 cites·9 claims
- 2161US10106725B2Light co-solvent compositionsUNIV TEXAS·Filed 2016·Granted Oct 23, 2018·0 cites·13 claims
- 2259US2014317999A1Use of amines in recovery of active oilsUNIV TEXAS·Filed 2014·Application pending·0 cites
- 2359US2014323369A1Use of amines in heavy oil transportWEERASOORIYA UPALI P·Filed 2014·Application pending·0 cites
- 2455US2013150269A1Light co-solvent compositionsUNIV TEXAS·Filed 2012·Application pending·0 cites
- 2553US10190035B2Phenol-alkoxylate co-solvent surfactant compositionUNIV TEXAS·Filed 2014·Granted Jan 29, 2019·0 cites·38 claims
- 2653US2015197684A1Use of amines in recovery of active oilsUNIV TEXAS·Filed 2015·Application pending·0 cites
- 2753US2014364347A1Di-functional anionic surfactants for enhanced oil recoveryPOPE GARY A·Filed 2013·Application pending·0 cites
- 2852US12338382B2Surfactants having non-conventional hydrophobesHARCROS CHEMICALS INC·Filed 2018·Granted Jun 24, 2025·0 cites·18 claims
- 2952US2015267870A1Use of amines in heavy oil transportUNIV TEXAS·Filed 2015·Application pending·0 cites
- 3052US2016069168A1Novel large hydrophobe quaternary ammonium surfactantsUNIV TEXAS·Filed 2015·Application pending·0 cites
- 3151US2014238679A1Transport of heavy oilUNIV TEXAS·Filed 2014·Application pending·0 cites
- 3249US9127210B2Short chain alkylamine alkoxylate compositionsUNIV TEXAS·Filed 2014·Granted Sep 8, 2015·0 cites·10 claims
- 3347US2024368453A1Ultra-short hydrophobe alkoxylates as surfactantsULTIMATE EOR SERVICES LLC·Filed 2022·Application pending·0 cites
- 3446US10876038B2Short hydrophobe anionic surfactantsUNIV TEXAS·Filed 2016·Granted Dec 29, 2020·0 cites·25 claims
- 3546US2013252855A1Novel use of a mild alkaline agent in chemical eorUNIV TEXAS·Filed 2013·Application pending·0 cites
- 3646US2015048007A1Multivalent mineral cation tolerant alkali system for chemical eorUNIV TEXAS·Filed 2014·Application pending·0 cites
- 3745US10899693B2Alkoxylated co-solventsUNIV TEXAS·Filed 2016·Granted Jan 26, 2021·0 cites·22 claims
- 3843US9175207B2Surfactant-less alkaline-polymer formulations for recovering reactive crude oilWEERASOORIYA UPALI P·Filed 2011·Granted Nov 3, 2015·0 cites·50 claims
- 3943US2015252294A1High active flowable surfactant blends for detergent and other cleaning applicationsUNIV TEXAS·Filed 2015·Application pending·0 cites
- 4041US2015361324A1Transport of Heavy OilUNIV TEXAS·Filed 2015·Application pending·0 cites
- 4140US9988346B2Large hydrophobe surfactantsWEERASOORIYA UPALI P·Filed 2012·Granted Jun 5, 2018·0 cites·30 claims
- 4239US2015252247A1High active flowable surfactant blends for enhanced oil recoveryUNIV TEXAS·Filed 2015·Application pending·0 cites
- 4338US9266821B2Process for making fatty amidesWEERASOORIYA UPALI·Filed 2009·Granted Feb 23, 2016·0 cites·59 claims
- 4435US2024368456A1Ultra-short hydrophobe alkoxylates as solvents or cosolventsULTIMATE EOR SERVICES LLC·Filed 2022·Application pending·0 cites
- 4535US2024368457A1Ultra short hydrophobes for unconventional reservoirs with light oils containing solution gasULTIMATE EOR SERVICES LLC·Filed 2022·Application pending·0 cites
- 4633US5847210AProcess for producing surfactant compositionCONDEA VISTA CO·Filed 1997·Granted Dec 8, 1998·0 cites·6 claims
- 4732US5731461ASurfactant composition and process for producing sameCONDEA VISTA CO·Filed 1996·Granted Mar 24, 1998·2 cites·2 claims
- 4831US5750749APolyhydroxy-fatty amide surfactant composition and method of preparing sameCONDEA VISTA CO·Filed 1996·Granted May 12, 1998·1 cites·12 claims
- 4930US5498753AProcess for preparing isethionate ethoxylatesVISTA CHEMICAL·Filed 1994·Granted Mar 12, 1996·0 cites·13 claims
- 5028US5352842AProcess for clarifying alkoxylated alcoholsVISTA CHEMICAL·Filed 1993·Granted Oct 4, 1994·2 cites·11 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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