Patents by Inventor Elaine S. Yamaguchi
Elaine S. Yamaguchi 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: 9315758Abstract: A lubricating oil composition is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; and (b) an oil-soluble titanium compound of Formula I: wherein R1, R2, R3 and R4 are independently a C1-C20 alkoxy group, and further wherein the lubricating oil composition is free of any zinc dialkyldithiophosphate.Type: GrantFiled: September 30, 2008Date of Patent: April 19, 2016Assignee: Chevron Oronite Company LLCInventors: Elaine S. Yamaguchi, Kam-Sik Ng
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Patent number: 9150811Abstract: Disclosed is a method for improving copper corrosion performance of a lubricating oil composition containing (a) a major amount of a base oil of lubricating viscosity; and (b) one or more dispersants containing one or more basic nitrogen atoms. The method involves adding to the lubricating oil composition an effective amount of one or more copper corrosion performance improving agents containing one or more oil-soluble titanium compounds.Type: GrantFiled: March 31, 2010Date of Patent: October 6, 2015Assignee: Cherron Oronite Company LLCInventors: Kenneth D. Nelson, Elaine S. Yamaguchi, Kam-Sik Ng, Paula S. Rogers
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Patent number: 9062273Abstract: A lubricating oil composition is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; and (b) one or more non-halogen-containing oil-soluble titanium complexes comprising at least one ligand selected from the group consisting of (i) an anion of an ?-, ?- or ?-hydroxycarbonyl compound; (ii) an anion of an ?-, ?- or ?-hydroxycarboxylic acid, amide or ester; (iii) an anion of an ?-, ?- or ?-aminocarboxylic acid; and (iv) an anion of an ?-, ?- or ?-keto acid.Type: GrantFiled: August 3, 2012Date of Patent: June 23, 2015Assignee: Chevron Oronite Company LLCInventors: Gaurav Bhalla, Elaine S. Yamaguchi, Man Hon Tsang
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Publication number: 20150094244Abstract: A lubricating oil composition comprising (a) a major amount of an oil of lubricating viscosity, (b) an ashless dispersant, (c) at least one metal-containing detergent, (d) an antioxidant, and (e) an anti-wear agent, wherein the lubricating oil composition is free of any zinc dialkyl dithiophosphate compound and is substantially free of any phosphorus content is disclosed.Type: ApplicationFiled: October 8, 2014Publication date: April 2, 2015Inventors: Elaine S. Yamaguchi, Kam-Sik Ng
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Patent number: 8993496Abstract: Disclosed is a method for improving compatibility of a fluorocarbon elastomer seal with a lubricating oil composition containing (a) a major amount of a base oil of lubricating viscosity; and (b) one or more dispersants containing one or more basic nitrogen atoms. The method involves adding to the lubricating oil composition an effective amount of one or more fluorocarbon elastomer compatibility improving agents comprising one or more oil-soluble titanium compounds.Type: GrantFiled: March 31, 2010Date of Patent: March 31, 2015Assignee: Chevron Oronite Company LLCInventors: Kenneth D. Nelson, Elaine S. Yamaguchi, Kam-Sik Ng, Paula S. Rogers
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Patent number: 8969265Abstract: A lubricating oil composition is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) one or more non-halogen-containing oil-soluble titanium complexes comprising at least one ligand comprising an anion of a carboxylic acid; (c) one or more dispersants; and (d) one or more detergents, wherein the lubricating oil composition is free of any zinc dialkyldithiophosphate.Type: GrantFiled: March 19, 2014Date of Patent: March 3, 2015Assignee: Chevron Oronite Company LLCInventors: Gaurav Bhalla, Elaine S. Yamaguchi, Man Hon Tsang
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Patent number: 8933001Abstract: Disclosed is a method for improving compatibility of a fluorocarbon elastomer seal with a lubricating oil composition containing (a) a major amount of a base oil of lubricating viscosity; and (b) one or more dispersants containing one or more basic nitrogen atoms. The method involves adding to the lubricating oil composition an effective amount of one or more fluorocarbon elastomer compatibility improving agents of the general formula Si—X4 or a hydrolysis product thereof, wherein each X is independently a hydroxyl-containing group, hydrocarbyloxy-containing group, acyloxy-containing group, amino-containing group, monoalkyl amino-containing group or dialkyl amino-containing group.Type: GrantFiled: March 31, 2010Date of Patent: January 13, 2015Assignee: Chevron Oronite Company LLCInventors: Kenneth D. Nelson, Elaine S. Yamaguchi, Kam-Sik Ng, Paula S. Rogers
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Patent number: 8901050Abstract: Disclosed is a method for improving copper corrosion performance of a lubricating oil composition containing (a) a major amount of a base oil of lubricating viscosity; and (b) one or more dispersants containing one or more basic nitrogen atoms. The method involves adding to the lubricating oil composition an effective amount of one or more copper corrosion performance improving agents of the general formula Si—X4 or a hydrolysis product thereof, wherein each X is independently a hydroxyl-containing group, hydrocarbyloxy-containing group, acyloxy-containing group, amino-containing group, monoalkyl amino-containing group or dialkyl amino-containing group.Type: GrantFiled: March 31, 2010Date of Patent: December 2, 2014Assignee: Chevron Oronite Company LLCInventors: Kenneth D. Nelson, Elaine S. Yamaguchi, Kam-Sik Ng, Paula S. Rogers
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Publication number: 20140206586Abstract: A lubricating oil composition is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) one or more non-halogen-containing oil-soluble titanium complexes comprising at least one ligand comprising an anion of a carboxylic acid; (c) one or more dispersants; and (d) one or more detergents, wherein the lubricating oil composition is free of any zinc dialkyldithiophosphate.Type: ApplicationFiled: March 19, 2014Publication date: July 24, 2014Applicant: Chevron Oronite Company LLCInventors: Gaurav Bhalla, Elaine S. Yamaguchi, Man Hon Tsang
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Patent number: 8716202Abstract: Disclosed is a method for improving compatibility of a fluorocarbon elastomer seal with a lubricating oil composition containing (a) a major amount of a base oil of lubricating viscosity; and (b) one or more dispersants containing one or more basic nitrogen atoms. The method involves adding to the lubricating oil composition an effective amount of one or more fluorocarbon elastomer compatibility improving agents comprising one or more non-halogen-containing oil-soluble titanium complexes comprising at least one ligand selected from the group consisting of (i) an anion of a saturated carboxylic acid, (ii) an anion of an ?-, ?- or ?-hydroxycarbonyl compound; (iii) an anion of an ?-, ?- or ?-hydroxycarboxylic acid, amide, or ester; (iv) an anion of an ?-, ?- or ?-aminocarboxylic acid; and (v) an anion of an ?-, ?- or ?-keto acid.Type: GrantFiled: December 14, 2010Date of Patent: May 6, 2014Assignee: Chevron oronite Company LLCInventors: Elaine S. Yamaguchi, Man Hon Tsang
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Patent number: 8709984Abstract: A lubricating oil composition is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) one or more non-halogen-containing oil-soluble titanium complexes comprising at least one ligand comprising an anion of a carboxylic acid; (c) one or more dispersants; and (d) one or more detergents, wherein the lubricating oil composition is free of any zinc dialkyldithiophosphate.Type: GrantFiled: December 15, 2009Date of Patent: April 29, 2014Assignee: Chevron Oronite Company LLCInventors: Gaurav Bhalla, Elaine S. Yamaguchi, Man Hon Tsang
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Publication number: 20120309654Abstract: A lubricating oil composition is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; and (b) one or more non-halogen-containing oil-soluble titanium complexes comprising at least one ligand selected from the group consisting of (i) an anion of an ?-, ?- or ?-hydroxycarbonyl compound; (ii) an anion of an ?-, ?- or ?-hydroxycarboxylic acid, amide or ester; (iii) an anion of an ?-, ?- or ?-aminocarboxylic acid; and (iv) an anion of an ?-, ?- or ?-keto acid.Type: ApplicationFiled: August 3, 2012Publication date: December 6, 2012Applicant: Chevron Oronite Company LLCInventors: Gaurav Bhalla, Elaine S. Yamaguchi, Man Hon Tsang
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Publication number: 20120247412Abstract: Disclosed is a method for improving the fuel economy of a heavy duty diesel engine which produces a heavily sooted lubricating oil composition during the engine's normal operation. The method involves introducing lubricating the heavy duty diesel engine with a heavy duty diesel engine lubricating oil composition comprising (a) a major amount of an oil of lubricating viscosity; and (b) a minor effective amount of an ashless friction modifier comprising a reaction product of a C4 to about C75 fatty acid ester and a mono- or dialkanolamine.Type: ApplicationFiled: March 31, 2011Publication date: October 4, 2012Applicant: Chevron Oronite Company LLCInventors: Jeffrey J. Toman, Gaurav Bhalla, Elaine S. Yamaguchi, Yat Fat Suen, Trevor Miller, Francois Simard
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Publication number: 20120149618Abstract: Disclosed is a method for improving compatibility of a fluorocarbon elastomer seal with a lubricating oil composition containing (a) a major amount of a base oil of lubricating viscosity; and (b) one or more dispersants containing one or more basic nitrogen atoms. The method involves adding to the lubricating oil composition an effective amount of one or more fluorocarbon elastomer compatibility improving agents comprising one or more non-halogen-containing oil-soluble titanium complexes comprising at least one ligand selected from the group consisting of (i) an anion of a saturated carboxylic acid, (ii) an anion of an ?-, ?- or ?-hydroxycarbonyl compound; (iii) an anion of an ?-, ?- or ?-hydroxycarboxylic acid, amide, or ester; (iv) an anion of an ?-, ?- or ?-aminocarboxylic acid; and (v) an anion of an ?-, ?- or ?-keto acid.Type: ApplicationFiled: December 14, 2010Publication date: June 14, 2012Applicant: Chevron Oronite Company LLCInventors: Elaine S. Yamaguchi, Man Hon Tsang
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Patent number: 8153566Abstract: A lubricating oil composition is disclosed which comprises (a) a major amount of an oil of lubricating viscosity, and (b) an oil-soluble tetra-functional hydrolyzable silane compound of the general formula Si—X4 or a hydrolysis product thereof, wherein each X is independently a hydroxyl-containing group, hydrocarbyloxy-containing group, acyloxy-containing group, amino-containing group, monoalkyl amino-containing group or a dialkyl amino-containing group, and further wherein the lubricating oil composition is free of any zinc dialkyl dithiophosphate.Type: GrantFiled: September 30, 2008Date of Patent: April 10, 2012Assignee: Cherron Oronite Company LLCInventors: Elaine S. Yamaguchi, Kam-Sik Ng
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Crankcase lubricating oil composition for protection of silver bearings in locomotive diesel engines
Patent number: 8084404Abstract: The present invention is directed to a crankcase lubricating oil composition for protection of silver bearings in locomotive diesel engines comprising (A) a major amount of an oil of lubricating viscosity, and (B) a silver wear protection additive composition, and (C) one or more detergents. The silver wear protection additive composition of the present invention comprises a mixture of (i) a hydrocarbylamine salt of a di-alkyl di-thiophosphoric acid and (ii) a hydrocarbylamine salt of an alkyl acid phosphate.Type: GrantFiled: July 20, 2005Date of Patent: December 27, 2011Assignee: Chevron Oronite Company LLCInventors: Melanie F. Tobias, Kenneth D. Nelson, Elaine S. Yamaguchi, Vernon R. Small -
Patent number: 8067346Abstract: Disclosed are lubricating oil compositions comprising a major amount of an oil of lubricating viscosity and a tetra-functional hydrolyzable silane compound of the general formula Si—X4 or hydrolysis product thereof, wherein X is independently selected from the group consisting of hydroxyl, alkoxy, aryloxy, acyloxy, amino, monoalkyl amino and dialkyl amino.Type: GrantFiled: August 31, 2006Date of Patent: November 29, 2011Assignee: Chevron Oronite Company LLCInventors: Elaine S. Yamaguchi, Kam-Sik Ng
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Publication number: 20110245118Abstract: Disclosed is a method for improving compatibility of a fluorocarbon elastomer seal with a lubricating oil composition containing (a) a major amount of a base oil of lubricating viscosity; and (b) one or more dispersants containing one or more basic nitrogen atoms. The method involves adding to the lubricating oil composition an effective amount of one or more fluorocarbon elastomer compatibility improving agents of the general formula Si—X4 or a hydrolysis product thereof, wherein each X is independently a hydroxyl-containing group, hydrocarbyloxy-containing group, acyloxy-containing group, amino-containing group, monoalkyl amino-containing group or dialkyl amino-containing group.Type: ApplicationFiled: March 31, 2010Publication date: October 6, 2011Applicant: Chevron Oronite Company LLCInventors: Kenneth D. Nelson, Elaine S. Yamaguchi, Kam-Sik Ng, Paula S. Rogers
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Publication number: 20110245117Abstract: Disclosed is a method for improving compatibility of a fluorocarbon elastomer seal with a lubricating oil composition containing (a) a major amount of a base oil of lubricating viscosity; and (b) one or more dispersants containing one or more basic nitrogen atoms. The method involves adding to the lubricating oil composition an effective amount of one or more fluorocarbon elastomer compatibility improving agents comprising one or more oil-soluble titanium compounds.Type: ApplicationFiled: March 31, 2010Publication date: October 6, 2011Applicant: Chevron Oronite Company LLCInventors: Kenneth D. Nelson, Elaine S. Yamaguchi, Kam-Sik Ng, Paula S. Rogers
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Publication number: 20110239970Abstract: Disclosed is a method for improving copper corrosion performance of a lubricating oil composition containing (a) a major amount of a base oil of lubricating viscosity; and (b) one or more dispersants containing one or more basic nitrogen atoms. The method involves adding to the lubricating oil composition an effective amount of one or more copper corrosion performance improving agents containing one or more oil-soluble titanium compounds.Type: ApplicationFiled: March 31, 2010Publication date: October 6, 2011Applicant: Chevron Oronite Company LLCInventors: Keneth D. Nelson, Elaine S. Yamaguchi, Kam-Sik Ng, Paula S. Rogers