Patents by Inventor Jayasooriya Sujith Perera
Jayasooriya Sujith Perera has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11639479Abstract: There is disclosed an antifoam component which includes at least one acrylamide polymer for use in a diesel fuel. Acrylamide polymers prepared by polymerizing a (meth)acrylamide monomer to yield a homopolymer or, alternatively, the acrylamide polymer may be prepared by polymerizing a (meth)acrylamide monomer and a (meth)acrylate monomer to yield a heteropolymer.Type: GrantFiled: March 19, 2019Date of Patent: May 2, 2023Assignee: The Lubrizol CorporationInventors: James H. Bush, David M. Nickerson, Rochelle L. Kovach, Jayasooriya Sujith Perera, Elizabeth A. Schiferl, Kamalakumari K. Salem
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Publication number: 20220259511Abstract: There is disclosed an antifoam component which includes at least one poly(acrylate) copolymer for use in a fuel. Poly(acrylate) polymers prepared by polymerizing a (meth)acrylate monomer comprising C1 to C30 alkyl esters of (meth)acrylic acid (“multifunctional monomer”) are also disclosed. Other poly(acrylate) polymers prepared by polymerizing (i) a (meth)acrylate monomer comprising C1to C4 alkyl esters of (meth)acrylic acid (“solubility monomer”); (ii) a (meth)acrylate monomer comprising C5 to C12 alkyl esters of (meth)acrylic acid (“surface tension monomer”); and (iii) optionally at least one additional monomer comprising a solubility monomer, a surface tension monomer, a monomer comprising C1 to C30 alkyl esters of (meth)acrylic acid (“multifunctional monomer”), or combinations thereof are also disclosed.Type: ApplicationFiled: January 5, 2022Publication date: August 18, 2022Inventors: James H. Bush, David M. Nickerson, Rochelle L. Kovach, Jayasooriya Sujith Perera, Elizabeth A. Schiferl, Kevin J. Hughes, Kamalakumari K. Salem
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Patent number: 11124721Abstract: There is disclosed an antifoam component which includes at least one poly(acrylate) copolymer for use in a diesel fuel. Poly(acrylate) polymers prepared by polymerizing a (meth)acrylate monomer comprising C1 to C30 alkyl esters of (meth)acrylic acid (“multifunctional monomer”) are also disclosed. Other poly(acrylate) polymers prepared by polymerizing (i) a (meth)acrylate monomer comprising C1 to C4 alkyl esters of (meth)acrylic acid (“solubility monomer”); (ii) a (meth)acrylate monomer comprising C5 to C12 alkyl esters of (meth)acrylic acid (“surface tension monomer”); and (iii) optionally at least one additional monomer comprising a solubility monomer, a surface tension monomer, a monomer comprising C1 to C30 alkyl esters of (meth)acrylic acid (“multifunctional monomer”), or combinations thereof are also disclosed.Type: GrantFiled: September 21, 2017Date of Patent: September 21, 2021Assignee: The Lubrizol CorporationInventors: James H. Bush, David M. Nickerson, Rochelle L. Kovach, Jayasooriya Sujith Perera, Elizabeth A. Schiferl, Kevin J. Hughes
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Publication number: 20210009912Abstract: There is disclosed an antifoam component which includes at least one acrylamide polymer for use in a diesel fuel. Acrylamide polymers prepared by polymerizing a (meth)acrylamide monomer to yield a homopolymer or, alternatively, the acrylamide polymer may be prepared by polymerizing a (meth)acrylamide monomer and a (meth)acrylate monomer to yield a heteropolymer.Type: ApplicationFiled: March 19, 2019Publication date: January 14, 2021Inventors: James H. Bush, David M. Nickerson, Rochelle L. Kovach, Jayasooriya Sujith Perera, Elizabeth A. Schiferl, Kamalakumari K. Salem
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Publication number: 20200270537Abstract: There is disclosed an antifoam component which includes at least one poly(acrylate) copolymer for use in a fuel. Poly(acrylate) polymers prepared by polymerizing a (meth)acrylate monomer comprising C1 to C30 alkyl esters of (meth)acrylic acid (“multifunctional monomer”) are also disclosed. Other poly(acrylate) polymers prepared by polymerizing (i) a (meth)acrylate monomer comprising C1 to C4 alkyl esters of (meth)acrylic acid (“solubility monomer”); (ii) a (meth)acrylate monomer comprising C5 to C12 alkyl esters of (meth)acrylic acid (“surface tension monomer”); and (iii) optionally at least one additional monomer comprising a solubility monomer, a surface tension monomer, a monomer comprising C1 to C30 alkyl esters of (meth)acrylic acid (“multifunctional monomer”), or combinations thereof are also disclosed.Type: ApplicationFiled: September 21, 2018Publication date: August 27, 2020Inventors: James H. Bush, David M. Nickerson, Rochelle L. Kovach, Jayasooriya Sujith Perera, Elizabeth A. Schiferl, Kevin J. Hughes, Kamalakumari K. Salem
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Publication number: 20190300807Abstract: There is disclosed an antifoam component which includes at least one poly(acrylate) copolymer for use in a diesel fuel. Poly(acrylate) polymers prepared by polymerizing a (meth)acrylate monomer comprising C1 to C30 alkyl esters of (meth)acrylic acid (“multifunctional monomer”) are also disclosed. Other poly(acrylate) polymers prepared by polymerizing (i) a (meth)acrylate monomer comprising C1 to C4 alkyl esters of (meth)acrylic acid (“solubility monomer”); (ii) a (meth)acrylate monomer comprising C5 to C12 alkyl esters of (meth)acrylic acid (“surface tension monomer”); and (iii) optionally at least one additional monomer comprising a solubility monomer, a surface tension monomer, a monomer comprising C1 to C30 alkyl esters of (meth)acrylic acid (“multifunctional monomer”), or combinations thereof are also disclosed.Type: ApplicationFiled: September 21, 2017Publication date: October 3, 2019Inventors: James H. Bush, David M. Nickerson, Rochelle L. Kovach, Jayasooriya Sujith Perera, Elizabeth A. Schiferl, Kevin J. Hughes
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Patent number: 10260019Abstract: A lubricating composition includes an oil of lubricating viscosity and an N-substituted hydroxyaromatic succinimide or a salt thereof.Type: GrantFiled: June 27, 2017Date of Patent: April 16, 2019Assignee: The Lubrizol CorporationInventors: Jayasooriya Sujith Perera, Gary M. Walker, Daniel J. Saccomando, Nicolas Proust, Stephen J. Cook
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Publication number: 20180002630Abstract: A lubricating composition includes an oil of lubricating viscosity and an N-substituted hydroxyaromatic succinimide or a salt thereof.Type: ApplicationFiled: June 27, 2017Publication date: January 4, 2018Inventors: Jayasooriya Sujith Perera, Gary M. Walker, Daniel J. Saccomando, Nicolas Proust, Stephen J. Cook
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Patent number: 9745326Abstract: A bridged alkaline earth metal alkylphenate having reduced monomeric alkylphenol is prepared by reacting (a) a 4-alkylphenol, unsubstituted at the ortho positions, (b) an alkaline earth metal oxide or hydroxide, (c) a bridging agent comprising sulfur or a carbonyl compound of 1 to about 6, or to 4 or to 2, carbon atoms, and (d) a 2,6-dialkylphenol. The amount of the 2,6-dialkylphenol is 0.05 to 3 moles per 1 mole of the 4-alkylphenol; if there is a molar excess of the 2,6-dialkylphenol, then the excess is added after initial reaction.Type: GrantFiled: February 7, 2014Date of Patent: August 29, 2017Assignee: The Lubrizol CorporationInventors: Jayasooriya Sujith Perera, Gary M. Walker, Christopher J. Ciolli, Christopher L. Friend
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Patent number: 9617496Abstract: A sulfurized alkaline earth metal (e.g., calcium) dodecylphenate is prepared by reacting (i) dodecylphenol with (ii) calcium hydroxide or calcium oxide in an amount of about 0.3 to about 0.7 moles per mole of dodecylphenol charged and (iii) an alkylene glycol in an amount of about 0.13 to about 0.6 moles per mole of dodecylphenol charged; and reacting the product of the first step with sulfur in an amount of about 1.6 to about 3 moles per mole of dodecylphenol charged; and thereafter optionally reacting the product with additional calcium hydroxide or calcium oxide and with carbon dioxide so as to form an overbased phenate. The product thus prepared has reduced levels of monomeric dodecylphenol.Type: GrantFiled: February 6, 2013Date of Patent: April 11, 2017Assignee: The Lubrizol CorporationInventors: Gary M. Walker, Roger L. Sowerby, James P. Roski, Roger L. Parsons, Christopher L. Friend, Andre Grange, Christopher J. Ciolli, Mohamed G. Fahmy, Jayasooriya Sujith Perera
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Publication number: 20150045269Abstract: A sulfurized alkaline earth metal (e.g., calcium) dodecylphenate is prepared by reacting (i) dodecylphenol with (ii) calcium hydroxide or calcium oxide in an amount of about 0.3 to about 0.7 moles per mole of dodecylphenol charged and (iii) an alkylene glycol in an amount of about 0.13 to about 0.6 moles per mole of dodecylphenol charged; and reacting the product of the first step with sulfur in an amount of about 1.6 to about 3 moles per mole of dodecylphenol charged; and thereafter optionally reacting the product with additional calcium hydroxide or calcium oxide and with carbon dioxide so as to form an overbased phenate. The product thus prepared has reduced levels of monomeric dodecylphenol.Type: ApplicationFiled: February 6, 2013Publication date: February 12, 2015Applicant: The Lubrizol CorporationInventors: Gary M. Walker, Roger L. Sowerby, James P. Roski, Roger L. Parsons, Christopher L. Friend, Andre Grange, Christopher J. Ciolli, Mohamed G. Fahmy, Jayasooriya Sujith Perera
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Publication number: 20140228266Abstract: A bridged alkaline earth metal alkylphenate having reduced monomeric alkylphenol is prepared by reacting (a) a 4-alkylphenol, unsubstituted at the ortho positions, (b) an alkaline earth metal oxide or hydroxide, (c) a bridging agent comprising sulfur or a carbonyl compound of 1 to about 6, or to 4 or to 2, carbon atoms, and (d) a 2,6-dialkylphenol. The amount of the 2,6-dialkylphenol is 0.05 to 3 moles per 1 mole of the 4-alkylphenol; if there is a molar excess of the 2,6-dialkylphenol, then the excess is added after initial reaction.Type: ApplicationFiled: February 7, 2014Publication date: August 14, 2014Applicant: The Lubrizol CorporationInventors: Jayasooriya Sujith Perera, Gary M. Walker, Christopher J. Ciolli, Christopher L. Friend