Patents by Inventor Takeshi Okido
Takeshi Okido 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: 11549077Abstract: A refrigerating machine oil containing: a lubricating base oil; and a compound represented by the following formula (1): wherein R1 and R2 each independently represent a monovalent hydrocarbon group, R3 represents a divalent hydrocarbon group, and R4 represents hydrogen atom or a monovalent hydrocarbon group, and the refrigerating machine oil having a kinematic viscosity at 100° C. of 0.5 mm2/s or more and 2.5 mm2/s or less.Type: GrantFiled: February 6, 2019Date of Patent: January 10, 2023Assignee: ENEOS CORPORATIONInventors: Yohei Shono, Fumiyuki Nara, Takeshi Okido, Hidetoshi Ogata
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Patent number: 11505760Abstract: The present invention provides a refrigerating machine oil comprising a hydrocarbon-based base oil having a viscosity index of 120 or less, and the refrigerating machine oil being used with a 1-chloro-2,3,3,3-tetrafluoropropene refrigerant.Type: GrantFiled: February 15, 2017Date of Patent: November 22, 2022Assignee: ENEOS CORPORATIONInventors: Yohei Shono, Akira Tada, Yuya Mizutani, Takeshi Okido, Hidetoshi Ogata, Tatsuki Nakajima
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Patent number: 11499114Abstract: A refrigerating oil comprising a lubricating base oil, a first extreme pressure agent containing sulfur and phosphorus as constituent elements and a second extreme pressure agent containing phosphorus but not containing sulfur as constituent elements, and having a kinematic viscosity at 100° C. of 0.5 mm2/s or more and 2.5 mm2/s or less.Type: GrantFiled: November 19, 2018Date of Patent: November 15, 2022Assignee: ENEOS CORPORATIONInventors: Fumiyuki Nara, Yohei Shono, Takeshi Okido, Hidetoshi Ogata
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Patent number: 11384309Abstract: One aspect of the present invention is a refrigerating machine oil containing: a base oil containing an ester of an alcohol and a fatty acid; a compound represented by the following formula (1): wherein R1 and R2 each independently represent a monovalent hydrocarbon group, R3 represents a divalent hydrocarbon group, and R4 represents hydrogen atom or a monovalent hydrocarbon group, and the refrigerating machine oil having a kinematic viscosity at 40° C. of 10 mm2/s or less.Type: GrantFiled: February 6, 2019Date of Patent: July 12, 2022Assignee: ENEOS CORPORATIONInventors: Yohei Shono, Fumiyuki Nara, Takeshi Okido, Hidetoshi Ogata
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Patent number: 11377619Abstract: An aspect of the present invention relates to a refrigerating machine oil with a kinematic viscosity at 100° C. of 0.5 mm2/s or more and 1.5 mm2/s or less, a 90% distillation temperature in gas chromatography distillation of 280° C. or more and less than 360° C., and an aniline point of 70° C. or more.Type: GrantFiled: January 30, 2018Date of Patent: July 5, 2022Assignee: ENEOS CORPORATIONInventors: Fumiyuki Nara, Yohei Shono, Takeshi Okido, Hidetoshi Ogata
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Patent number: 11365368Abstract: A refrigerating machine oil having a kinematic viscosity at 100° C. of 0.5 mm2/s or more and 2.5 mm2/s or less, a distillation end point in gas chromatography distillation of 380° C. or more and 450° C. or less, and a sulfur content of 0.001 mass % or more and 0.2 mass % or less.Type: GrantFiled: November 19, 2018Date of Patent: June 21, 2022Assignee: ENEOS CORPORATIONInventors: Fumiyuki Nara, Yohei Shono, Takeshi Okido, Hidetoshi Ogata
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Patent number: 11208608Abstract: In an aspect, the present invention provides a refrigerating machine oil comprising a poly(meth)acrylate as a base oil, wherein the poly(meth)acrylate comprises a hydrogenated poly(meth)acrylate, a content of a unit having a carbon-carbon double bond present at a terminal in the poly(meth)acrylate is 6% by mole or less relative to total units constituting the poly(meth)acrylate, and a kinematic viscosity at 40° C. of the hydrogenated poly(meth)acrylate is 1 to 1000 mm2/s, the refrigerating machine oil being used with a refrigerant comprising a refrigerant selected from difluoromethane, a mixture of difluoromethane and pentafluoroethane, a mixture of difluoromethane, pentafluoroethane, and 1, 1, 1, 2-tetrafluoroethane, a mixture of pentafluoroethane, 1, 1, 1, 2-tetrafluoroethane, and 1, 1, 1-trifluoroethane, an unsaturated hydrofluorocarbon, a hydrocarbon, and carbon dioxide.Type: GrantFiled: October 20, 2017Date of Patent: December 28, 2021Assignee: ENEOS CORPORATIONInventors: Kentaro Yamaguchi, Akira Tada, Tatsuki Nakajima, Takeshi Okido, Hidetoshi Ogata
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Publication number: 20210230501Abstract: An aspect of the present invention relates to a refrigerating machine oil with a kinematic viscosity at 100° C. of 0.5 mm2/s or more and 1.5 mm2/s or less, a 90% distillation temperature in gas chromatography distillation of 280° C. or more and less than 360° C., and an aniline point of 70° C. or more.Type: ApplicationFiled: January 30, 2018Publication date: July 29, 2021Applicant: JXTG Nippon Oil & Energy CorporationInventors: Fumiyuki NARA, Yohei SHONO, Takeshi OKIDO, Hidetoshi OGATA
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Patent number: 11001779Abstract: The present invention, in one aspect, provides a refrigerating machine oil including a lubricating base oil and a compound represented by the following formula (A): wherein R1 and R2 each independently represent a monovalent hydrocarbon group, and R3 and R4 each independently represent a hydrogen atom or an alkyl group, the refrigerating machine oil being used with a refrigerant including an unsaturated hydrofluorocarbon.Type: GrantFiled: September 14, 2017Date of Patent: May 11, 2021Assignee: ENEOS CORPORATIONInventors: Yohei Shono, Kentaro Yamaguchi, Yuya Mizutani, Takeshi Okido, Hidetoshi Ogata
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Publication number: 20210054301Abstract: The present invention provides a refrigerating machine oil comprising a hydrocarbon-based base oil having a viscosity index of 120 or less, and the refrigerating machine oil being used with a 1-chloro-2,3,3,3-tetrafluoropropene refrigerant.Type: ApplicationFiled: February 15, 2017Publication date: February 25, 2021Applicants: JXTG NIPPON OIL & ENERGY CORPORATION, JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Yohei SHONO, Akira TADA, Yuya MIZUTANI, Takeshi OKIDO, Hidetoshi OGATA, Tatsuki NAKAJIMA
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Patent number: 10913918Abstract: The present invention provides a refrigerating machine oil comprising: a lubricating base oil; and 40 mass % or less of a polymer, based on a total amount of the refrigerating machine oil, the polymer having a structural unit represented by the following formula (I) and a weight average molecular weight of from 500 to 100000. [In formula (I), Ra, Rb and Rc each independently represents a hydrogen atom or a hydrocarbon group, and Rd represents an oxygen-containing organic group or a C1-18 hydrocarbon group.Type: GrantFiled: April 14, 2017Date of Patent: February 9, 2021Assignee: ENEOS CORPORATIONInventors: Hiroko Shimpo, Kentaro Yamaguchi, Hidetoshi Ogata, Takeshi Okido
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Publication number: 20210032558Abstract: One aspect of the present invention is a refrigerating machine oil containing: a base oil containing an ester of an alcohol and a fatty acid; a compound represented by the following formula (1): wherein R1 and R2 each independently represent a monovalent hydrocarbon group, R3 represents a divalent hydrocarbon group, and R4 represents hydrogen atom or a monovalent hydrocarbon group, and the refrigerating machine oil having a kinematic viscosity at 40° C. of 10 mm2/s or less.Type: ApplicationFiled: February 6, 2019Publication date: February 4, 2021Applicant: ENEOS CorporationInventors: Yohei SHONO, Fumiyuki NARA, Takeshi OKIDO, Hidetoshi OGATA
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Publication number: 20200369979Abstract: A refrigerating machine oil having a kinematic viscosity at 100° C. of 0.5 mm2/s or more and 2.5 mm2/s or less, a distillation end point in gas chromatography distillation of 380° C. or more and 450° C. or less, and a sulfur content of 0.001 mass % or more and 0.2 mass % or less.Type: ApplicationFiled: November 19, 2018Publication date: November 26, 2020Applicant: JXTG Nippon Oil & Energy CorporationInventors: Fumiyuki NARA, Yohei SHONO, Takeshi OKIDO, Hidetoshi OGATA
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Publication number: 20200354645Abstract: A refrigerating machine oil containing: a lubricating base oil; and a compound represented by the following formula (1): wherein R1 and R2 each independently represent a monovalent hydrocarbon group, R3 represents a divalent hydrocarbon group, and R4 represents hydrogen atom or a monovalent hydrocarbon group, and the refrigerating machine oil having a kinematic viscosity at 100° C. of 0.5 mm2/s or more and 2.5 mm2/s or less.Type: ApplicationFiled: February 6, 2019Publication date: November 12, 2020Applicant: ENEOS CorporationInventors: Yohei SHONO, Fumiyuki NARA, Takeshi OKIDO, Hidetoshi OGATA
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Publication number: 20200308504Abstract: A refrigerating oil comprising a lubricating base oil, a first extreme pressure agent containing sulfur and phosphorus as constituent elements and a second extreme pressure agent containing phosphorus but not containing sulfur as constituent elements, and having a kinematic viscosity at 100° C. of 0.5 mm2/s or more and 2.5 mm2/s or less.Type: ApplicationFiled: November 19, 2018Publication date: October 1, 2020Applicant: JXTG Nippon Oil & Energy CorporationInventors: Fumiyuki NARA, Yohei SHONO, Takeshi OKIDO, Hidetoshi OGATA
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Patent number: 10759982Abstract: The present invention provides a refrigerating machine oil comprising, as a base oil, at least one oxygen-containing oil having a carbon/oxygen molar ratio of 2.5 or more and 7.5 or less, and the refrigerating machine oil being used with a 1-chloro-2,3,3,3-tetrafluoropropene refrigerant.Type: GrantFiled: February 15, 2017Date of Patent: September 1, 2020Assignee: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Yohei Shono, Akira Tada, Yuya Mizutani, Takeshi Okido, Hidetoshi Ogata
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Patent number: 10723926Abstract: The present invention provides a working fluid composition for a refrigerating machine containing: a refrigerating machine oil containing: a first ester that is a polyol ester of dipentaerythritol and at least one fatty acid selected from fatty acids having 4 to 10 carbon atoms, and has a kinematic viscosity at 100° C. of 7.0 mm2/s or more; and a second ester that is a complex ester of a polyhydric alcohol containing at least one selected from neopentyl glycol, trimethylolpropane and pentaerythritol, a polybasic acid having 6 to 12 carbon atoms, and a monohydric alcohol having 4 to 18 carbon atoms or a fatty acid having 4 to 18 carbon atoms; and a refrigerant containing difluoromethane.Type: GrantFiled: July 26, 2016Date of Patent: July 28, 2020Assignee: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Takeshi Okido, Hiroko Shimpo, Yuya Mizutani, Hidetoshi Ogata
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Publication number: 20200199476Abstract: In an aspect, the present invention provides a refrigerating machine oil comprising a poly(meth)acrylate as a base oil, wherein the poly(meth)acrylate comprises a hydrogenated poly(meth)acrylate, a content of a unit having a carbon-carbon double bond present at a terminal in the poly(meth)acrylate is 6% by mole or less relative to total units constituting the poly(meth)acrylate, and a kinematic viscosity at 40° C. of the hydrogenated poly(meth)acrylate is 1 to 1000 mm2/s, the refrigerating machine oil being used with a refrigerant comprising a refrigerant selected from difluoromethane, a mixture of difluoromethane and pentafluoroethane, a mixture of difluoromethane, pentafluoroethane, and 1,1,1,2-tetrafluoroethane, a mixture of pentafluoroethane, 1,1,1,2-tetrafluoroethane, and 1,1,1-trifluoroethane, an unsaturated hydrofluorocarbon, a hydrocarbon, and carbon dioxide.Type: ApplicationFiled: October 20, 2017Publication date: June 25, 2020Applicant: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Kentaro YAMAGUCHI, Akira TADA, Tatsuki NAKAJIMA, Takeshi OKIDO, Hidetoshi OGATA
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Patent number: 10414962Abstract: The working fluid composition for a refrigerating machine of the present invention comprises a refrigerant comprising a first refrigerant component and a second refrigerant component, and having a global warming potential (GWP) of 500 or less, wherein the first refrigerant component is at least one selected from difluoromethane and tetrafluoropropene, and the second refrigerant component is at least one selected from carbon dioxide and a hydrocarbon having 3 to 4 carbon atoms; and a refrigerating machine oil comprising at least one selected from a polyol ester, a polyvinyl ether and a polyalkylene glycol compound as a base oil, wherein a carbon/oxygen molar ratio of the base oil is 2.5 or more and 5.8 or less.Type: GrantFiled: October 26, 2018Date of Patent: September 17, 2019Assignee: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Masanori Saito, Takeshi Okido, Souichirou Konno, Kuniko Adegawa
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Patent number: 10351793Abstract: The present invention provides a refrigerating machine oil comprising: a base oil containing an ester of dipentaerythritol with 2-methylbutanoic acid and n-pentanoic acid; and at least one epoxy compound selected from the group consisting of a glycidyl ester compound and a glycidyl ether compound, the refrigerating machine oil being used with a difluoromethane refrigerant.Type: GrantFiled: February 10, 2016Date of Patent: July 16, 2019Assignee: JXTG Nippon Oil & Energy CorporationInventors: Hitoshi Takahashi, Takeshi Okido, Souichirou Konno