Patents by Inventor Alexei Nikolaevich Kurchan
Alexei Nikolaevich Kurchan 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: 11781086Abstract: A lubricating oil composition comprises an amide and at least one additive. A lubricating grease composition comprises a liquid amide, a thickener comprising a metal soap, and at least one additive. The amide in each composition is the reaction product of a secondary, branched amine and a carboxylic acid. The carboxylic acid may be a monocarboxylic acid or a dicarboxylic acid, including dimer acid. The amide is hydrolytically stable, and may be used to increase the hydrolytic stability of the lubricant oil or grease composition. Alternatively, the amide may be used to increase the additive solubility or detergency of the lubricant oil or grease composition.Type: GrantFiled: August 27, 2021Date of Patent: October 10, 2023Assignee: EQUUS UK TOPCO LTDInventors: Claire Anne Ward, Alexei Nikolaevich Kurchan
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Publication number: 20220010233Abstract: A lubricating oil composition comprises an amide and at least one additive. A lubricating grease composition comprises a liquid amide, a thickener comprising a metal soap, and at least one additive. The amide in each composition is the reaction product of a secondary, branched amine and a carboxylic acid. The carboxylic acid may be a monocarboxylic acid or a dicarboxylic acid, including dimer acid. The amide is hydrolytically stable, and may be used to increase the hydrolytic stability of the lubricant oil or grease composition. Alternatively, the amide may be used to increase the additive solubility or detergency of the lubricant oil or grease composition.Type: ApplicationFiled: August 27, 2021Publication date: January 13, 2022Applicants: Croda International Plc, Croda, Inc.Inventors: Claire Anne Ward, Alexei Nikolaevich Kurchan
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Patent number: 11104860Abstract: A lubricating composition comprises an amide and at least one additive. The amide is the reaction product of a secondary, branched amine and a carboxylic acid. The carboxylic acid may be a monocarboxylic acid or a dicarboxylic acid, including dimer acid. The amide is hydrolytically stable, and may be used to increase the hydrolytic stability of the lubricant composition. Alternatively, the amide may be used to increase the additive solubility or detergency of the lubricant composition.Type: GrantFiled: May 14, 2015Date of Patent: August 31, 2021Assignee: Croda, Inc.Inventors: Xin Chen, Alexei Nikolaevich Kurchan, Zhongqi Shen
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Patent number: 11041137Abstract: The present invention relates to a lubricant composition containing a base stock and at least 0.01 wt % of a friction reducing additive which is a compound of the Formula (I): R1[(AO)n—R2]m??(I) wherein R1 is the residue of a group having at least 2 active hydrogen atoms; m is at least 2; AO is an alkylene oxide residue; each n is independently from 0 to 100; and each R2 is independently H or R3, where each R3 is independently a residue of a polyhydroxyalkyl or polyhydroxyalkenyl carboxylic acid, a residue of a hydroxyalkyl or hydroxyalkenyl carboxylic acid and/or a residue of an oligomer of the hydroxyalkyl or hydroxyalkenyl carboxylic acid; and on average at least 0.5 of R2 groups are R3. The lubricant composition is suitable for use in an engine oil, a hydraulic oil or fluid, a gear oil and/or a metal-working fluid.Type: GrantFiled: October 23, 2014Date of Patent: June 22, 2021Assignee: Croda, Inc.Inventors: Xin Chen, Alexei Nikolaevich Kurchan
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Patent number: 9862908Abstract: A seal swell agent for a lubricating fluid is described. The invention relates to a seal swell agent for use in lubricating oils, such as engine oils, turbine oils, automatic and manual transmission, or gear, fluids, drivetrain and gear oils and hydraulic fluids. The seal swell agent comprises a diester of sorbitol or a derivative thereof and at least one carboxylic acid. The invention extends to the use of a diester of sorbitol or a derivative thereof and at least one carboxylic acid as a seal swell agent, and a method of maintaining seal integrity.Type: GrantFiled: January 16, 2013Date of Patent: January 9, 2018Assignee: CRODA, INC.Inventors: Xin Chen, Christopher Donaghy, Alexei Nikolaevich Kurchan
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Patent number: 9677022Abstract: The present invention relates to a lubricant base stock, a lubricant composition, a method of lubricating an object and the use of a lubricant base stock. The lubricant base stock comprises a first ester which is the reaction product of: a first polyol comprising at least 3 hydroxyl groups; a first mono-carboxylic acid comprising from 4 to 18 carbon atoms; and a poly-carboxylic acid comprising at least 2 carboxyl groups and comprising from 20 to 60 carbon atoms. The lubricant base stock also comprises a second ester which is the reaction product of: a second polyol comprising at least 3 hydroxyl groups; and a second mono-carboxylic acid comprising from 4 to 18 carbon atoms.Type: GrantFiled: August 19, 2014Date of Patent: June 13, 2017Assignee: CRODA, INC.Inventors: Jillian Carli Beyer, Alexei Nikolaevich Kurchan
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Publication number: 20170073609Abstract: A lubricating composition comprises an amide and at least one additive. The amide is the reaction product of a secondary, branched amine and a carboxylic acid. The carboxylic acid may be a monocarboxylic acid or a dicarboxylic acid, including dimer acid. The amide is hydrolytically stable, and may be used to increase the hydrolytic stability of the lubricant composition. Alternatively, the amide may be used to increase the additive solubility or detergency of the lubricant composition.Type: ApplicationFiled: May 14, 2015Publication date: March 16, 2017Applicant: CORDA, INC.Inventors: XIN CHEN, ALEXEI NIKOLAEVICH KURCHAN, ZHONGQI SHEN
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Publication number: 20160264907Abstract: The present invention relates to a lubricant composition containing a base stock and at least 0.01 wt % of a friction reducing additive which is a compound of the Formula (I): R1[(AO)n—R2]m??(I) wherein R1 is the residue of a group having at least 2 active hydrogen atoms; m is at least 2; AO is an alkylene oxide residue; each n is independently from 0 to 100; and each R2 is independently H or R3, where each R3 is independently a residue of a polyhydroxyalkyl or polyhydroxyalkenyl carboxylic acid, a residue of a hydroxyalkyl or hydroxyalkenyl carboxylic acid and/or a residue of an oligomer of the hydroxyalkyl or hydroxyalkenyl carboxylic acid; and on average at least 0.5 of R2 groups are R3. The lubricant composition is suitable for use in an engine oil, a hydraulic oil or fluid, a gear oil and/or a metal-working fluid.Type: ApplicationFiled: October 23, 2014Publication date: September 15, 2016Applicant: CRODA, INC.Inventors: XIN CHEN, ALEXEI NIKOLAEVICH KURCHAN
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Publication number: 20160053194Abstract: The present invention relates to a lubricant base stock, a lubricant composition, a method of lubricating an object and the use of a lubricant base stock. The lubricant base stock comprises a first ester which is the reaction product of: a first polyol comprising at least 3 hydroxyl groups; a first mono-carboxylic acid comprising from 4 to 18 carbon atoms; and a poly-carboxylic acid comprising at least 2 carboxyl groups and comprising from 20 to 60 carbon atoms. The lubricant base stock also comprises a second ester which is the reaction product of: a second polyol comprising at least 3 hydroxyl groups; and a second mono-carboxylic acid comprising from 4 to 18 carbon atoms.Type: ApplicationFiled: August 19, 2014Publication date: February 25, 2016Applicant: CRODA, INC.Inventors: Jillian Carli Beyer, Alexei Nikolaevich Kurchan
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Publication number: 20140336092Abstract: A seal swell agent for a lubricating fluid is described. The invention relates to a seal swell agent for use in lubricating oils, such as engine oils, turbine oils, automatic and manual transmission, or gear, fluids, drivetrain and gear oils and hydraulic fluids. The seal swell agent comprises a diester of sorbitol or a derivative thereof and at least one carboxylic acid. The invention extends to the use of a diester of sorbitol or a derivative thereof and at least one carboxylic acid as a seal swell agent, and a method of maintaining seal integrity.Type: ApplicationFiled: January 16, 2013Publication date: November 13, 2014Applicant: CRODA, INC.Inventors: Xin Chen, Christopher Donaghy, Alexei Nikolaevich Kurchan