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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Publication number: 20190194567Abstract: 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: ApplicationFiled: September 14, 2017Publication date: June 27, 2019Applicant: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Yohei SHONO, Kentaro YAMAGUCHI, Yuya MIZUTANI, Takeshi OKIDO, Hidetoshi OGATA
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Publication number: 20190127659Abstract: 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: ApplicationFiled: April 14, 2017Publication date: May 2, 2019Applicant: JXTG Nippon Oil & Energy CorporationInventors: Hiroko SHIMPO, Kentaro YAMAGUCHI, Hidetoshi OGATA, Takeshi OKIDO
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Patent number: 10273394Abstract: A working fluid composition for a refrigerating machine of the invention comprises a refrigerant comprising difluoromethane and an unsaturated fluorinated hydrocarbon wherein a mass of the difluoromethane/the unsaturated fluorinated hydrocarbon is 95/5 to 10/90, and a refrigerating machine oil comprising at least one base oil selected from among polyol esters with a carbon/oxygen molar ratio of 3.2 to 5.8 and polyvinyl ethers with a carbon/oxygen molar ratio of 3.2 to 5.8.Type: GrantFiled: October 25, 2012Date of Patent: April 30, 2019Assignee: JX NIPPON OIL & ENERGY CORPORATIONInventors: Takeshi Okido, Masanori Saito, Kuniko Adegawa
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Publication number: 20190078005Abstract: 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: ApplicationFiled: February 15, 2017Publication date: March 14, 2019Applicant: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Yohei SHONO, Akira TADA, Yuya MIZUTANI, Takeshi OKIDO, Hidetoshi OGATA
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Publication number: 20190062613Abstract: 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 arid 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: ApplicationFiled: October 26, 2018Publication date: February 28, 2019Applicant: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Masanori SAITO, Takeshi OKIDO, Souichirou KONNO, Kuniko ADEGAWA
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Patent number: 10144855Abstract: 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: March 25, 2013Date of Patent: December 4, 2018Assignee: JXTG NIPPON OIL AND ENERGY CORPORATIONInventors: Masanori Saito, Takeshi Okido, Souichirou Konno, Kuniko Adegawa
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Patent number: 10053644Abstract: The present invention provides a refrigerating machine oil comprising a polyvinylether having a structural unit represented by the following formula (1): wherein R1, R2, and R3 may be the same or different from each other and each represent a hydrogen atom or a hydrocarbon group, R4 represents a divalent hydrocarbon group or an ethereal oxygen-containing divalent hydrocarbon group, R5 represents a hydrocarbon group, m represents an integer of 0 or more, and in the case where m is 2 or more, a plurality of R4 may be the same or different from each other, a number average molecular weight Mn is 500 or more and 2000 or less, a ratio of a weight average molecular weight Mw to a number average molecular weight Mn, Mw/Mn, is 1.10 or more and 1.25 or less, and the refrigerating machine oil is used with a mildly flammable hydrofluorocarbon refrigerant.Type: GrantFiled: February 2, 2015Date of Patent: August 21, 2018Assignee: JXTG Nippon Oil & Energy CorporationInventors: Hitoshi Takahashi, Tsutomu Takahashi, Takeshi Okido, Hiroko Shimpo, Souichirou Konno
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Publication number: 20180215977Abstract: 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: ApplicationFiled: July 26, 2016Publication date: August 2, 2018Applicant: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Takeshi OKIDO, Hiroko SHIMPO, Yuya MIZUTANI, Hidetoshi OGATA
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Publication number: 20180023025Abstract: 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: ApplicationFiled: February 10, 2016Publication date: January 25, 2018Applicant: JXTG Nippon Oil & Energy CorporationInventors: Hitoshi Takahashi, Takeshi Okido, Souichirou Konno
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Patent number: 9783762Abstract: The present invention provides a working fluid composition for a refrigerating machine containing: a refrigerating machine oil containing, as a base oil, a mixed ester of (A) a complex ester synthesized from a polyhydric alcohol such as neopentyl glycol, a polybasic acid having 6 to 12 carbon atoms, a monohydric alcohol having 4 to 18 carbon atoms and the like, and (B) a polyol ester synthesized from a polyhydric alcohol such as neopentyl glycol and a monocarboxylic fatty acid having 4 to 18 carbon atoms, in a mass ratio of (A) the complex ester/(B) the polyol ester of 5/95 to 95/5; and a refrigerant such as carbon dioxide.Type: GrantFiled: January 16, 2015Date of Patent: October 10, 2017Assignee: JX Nippon Oil & Energy CorporationInventors: Hitoshi Takahashi, Takeshi Okido, Hiroko Shimpo, Souichirou Konno
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Patent number: 9752091Abstract: The lubricating base oil of the present invention comprises an ester synthesized from: a first component that is at least one selected from polyhydric alcohols having 2 to 4 hydroxyl groups; a second component that is at least one selected from polybasic acids having 6 to 12 carbon atoms; and a third component that is at least one selected from monohydric alcohols having 4 to 18 carbon atoms and monocarboxylic acids having 2 to 12 carbon atoms. In addition, the refrigerating machine oil and the working fluid composition for a refrigerating machine of the present invention each comprise the above lubricating base oil.Type: GrantFiled: July 25, 2013Date of Patent: September 5, 2017Assignee: JX NIPPON OIL & ENERGY CORPORATIONInventors: Masanori Saito, Ken Sawada, Takeshi Okido, Kuniko Adegawa
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Patent number: 9725630Abstract: The present invention provides a working fluid composition for a refrigerating machine, comprising: a refrigerating machine oil comprising, as a base oil, a mixed ester of (A) a complex ester obtainable by synthesis of at least one polyhydric alcohol selected from neopentyl glycol, trimethylolpropane and pentaerythritol, a C6-C12 polybasic acid, and a C4-C18 monohydric alcohol or a C4-C18 monocarboxylic fatty acid, and (B) a polyol ester obtainable by synthesis of at least one polyhydric alcohol selected from neopentyl glycol, trimethylolpropane, pentaerythritol and dipentaerythritol, and a C4-C18 monocarboxylic fatty acid, in a mass ratio of (A) the complex ester/(B) the polyol ester of 5/95 to 95/5; and a hydrocarbon refrigerant having 3 or 4 carbon atoms, wherein a refrigerant dissolved viscosity, at a temperature of 80° C. and an absolute pressure of 1.5 MPa, is 1.0 mm2/s or more.Type: GrantFiled: March 14, 2014Date of Patent: August 8, 2017Assignee: JX NIPPON OIL & ENERGY CORPORATIONInventors: Takeshi Okido, Souichirou Konno
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Patent number: 9719001Abstract: The present invention provides a working fluid composition for a refrigerating machine, comprising: a refrigerating machine oil comprising, as a base oil, a mixed ester of (A) a complex ester obtainable by synthesis of at least one polyhydric alcohol selected from neopentyl glycol, trimethylolpropane and pentaerythritol, a C6-C12 polybasic acid, and a C4-C18 monohydric alcohol or a C4-C18 monocarboxylic fatty acid, and (B) a polyol ester obtainable by synthesis of from at least one polyhydric alcohol selected from neopentyl glycol, trimethylolpropane, pentaerythritol and dipentaerythritol, and a C4-C18 monocarboxylic fatty acid, in a mass ratio of (A) the complex ester/(B) the polyol ester of 5/95 to 95/5; and tetrafluoropropene as a refrigerant, wherein a refrigerant dissolved viscosity, at a temperature of 80° C. and an absolute pressure of 1.6 MPa, is 1.5 mm2/s or more.Type: GrantFiled: March 14, 2014Date of Patent: August 1, 2017Assignee: JX NIPPON OIL & ENERGY CORPORATIONInventors: Takeshi Okido, Souichirou Konno
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Patent number: 9676983Abstract: The present invention provides a working fluid composition for a refrigerating machine, comprising: a refrigerating machine oil comprising, as a base oil, a mixed ester of (A) a complex ester and (B) a polyol ester, wherein (A) is obtainable by synthesis from a specific polyhydric alcohol, a polybasic acid having 6 to 12 carbon atoms, and a monohydric alcohol having 4 to 18 carbon atoms or a monocarboxylic acid having 4 to 18 carbon atoms, wherein (B) is obtainable by synthesis from a specific polyhydric alcohol and a monocarboxylic acid having 4 to 18 carbon atoms, and wherein a mass ratio of (A)/(B) is 5/95 to 95/5; and difluoromethane used as a refrigerant, and the working fluid composition having a refrigerant dissolved viscosity of 5.5 mm2/s or more, at a temperature of 80° C. and an absolute pressure of 2.1 MPa.Type: GrantFiled: November 28, 2013Date of Patent: June 13, 2017Assignee: JX NIPPON OIL & ENERGY CORPORATIONInventors: Masanori Saito, Takeshi Okido, Souichirou Konno, Kuniko Adegawa
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Publication number: 20170073602Abstract: The present invention provides a refrigerating machine oil comprising a polyvinylether having a structural unit represented by the following formula (1): wherein R1, R2, and R3 may be the same or different from each other and each represent a hydrogen atom or a hydrocarbon group, R4 represents a divalent hydrocarbon group or an ethereal oxygen-containing divalent hydrocarbon group, R5 represents a hydrocarbon group, m represents an integer of 0 or more, and in the case where m is 2 or more, a plurality of R4 may be the same or different from each other, a number average molecular weight Mn is 500 or more and 2000 or less, a ratio of a weight average molecular weight Mw to a number average molecular weight Mn, Mw/Mn, is 1.10 or more and 1.25 or less, and the refrigerating machine oil is used with a mildly flammable hydrofluorocarbon refrigerant.Type: ApplicationFiled: February 2, 2015Publication date: March 16, 2017Applicant: JX Nippon Oil & Energy CorporationInventors: Hitoshi Takahashi, Tsutomu Takahashi, Takeshi Okido, Hiroko Shimpo, Souichirou Konno
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Publication number: 20170002291Abstract: The present invention provides a working fluid composition for a refrigerating machine containing: a refrigerating machine oil containing, as a base oil, a mixed ester of (A) a complex ester synthesized from a polyhydric alcohol such as neopentyl glycol, a polybasic acid having 6 to 12 carbon atoms, a monohydric alcohol having 4 to 18 carbon atoms and the like, and (B) a polyol ester synthesized from a polyhydric alcohol such as neopentyl glycol and a monocarboxylic fatty acid having 4 to 18 carbon atoms, in a mass ratio of (A) the complex ester/(B) the polyol ester of 5/95 to 95/5; and a refrigerant such as carbon dioxide.Type: ApplicationFiled: January 16, 2015Publication date: January 5, 2017Applicant: JX Nippon Oil & Energy CorporationInventors: Hitoshi Takahashi, Takeshi Okido, Hiroko Shimpo, Souichirou Konno
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Patent number: 9469801Abstract: A working fluid composition for a refrigerating machine of the present invention comprises: a refrigerating machine oil comprising a complex ester as a base oil; and a hydrocarbon refrigerant having 2 to 4 carbon atoms, the complex ester being obtainable by further esterifying, with at least one selected from a monohydric alcohol having 1 to 20 carbon atoms and a fatty acid having 2 to 20 carbon atoms, an ester intermediate obtained by reacting a neopentyl polyol with a dibasic acid, and having an acid value of 0.5 mgKOH/g or less, the refrigerating machine oil having a kinematic viscosity at 100° C. of 2 to 50 mm2/s.Type: GrantFiled: February 28, 2013Date of Patent: October 18, 2016Assignee: JX NIPPON OIL & ENERGY CORPORATIONInventors: Masanori Saito, Takeshi Okido, Ken Sawada, Kuniko Adegawa
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Publication number: 20160289523Abstract: The present invention provides a working fluid composition for a refrigerating machine, comprising: a refrigerating machine oil comprising, as a base oil, a mixed ester of (A) a complex ester obtainable by synthesis of at least one polyhydric alcohol selected from neopentyl glycol, trimethylolpropane and pentaerythritol, a C6-C12 polybasic acid, and a C4-C18 monohydric alcohol or a C4-C18 monocarboxylic fatty acid, and (B) a polyol ester obtainable by synthesis of at least one polyhydric alcohol selected from neopentyl glycol, trimethylolpropane, pentaerythritol and dipentaerythritol, and a C4-C18 monocarboxylic fatty acid, in a mass ratio of (A) the complex ester/(B) the polyol ester of 5/95 to 95/5; and a hydrocarbon refrigerant having 3 or 4 carbon atoms, wherein a refrigerant dissolved viscosity, at a temperature of 80° C. and an absolute pressure of 1.5 MPa, is 1.0 mm2/s or more.Type: ApplicationFiled: March 14, 2014Publication date: October 6, 2016Applicant: JX NIPPON OIL & ENERGY CORPORATIONInventors: Takeshi OKIDO, Souichirou KONNO
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Patent number: 9296976Abstract: The lubricating oil composition of the invention comprises a lubricant base oil, a 3,4,5-trihydroxybenzoic acid ester at 5-5000 ppm by mass, and a phosphorus compound at 0.001-10.0% by mass, based on the total mass of the lubricating oil composition. The lubricating oil composition of the invention significantly lowers wear and exhibits a stable low frictional coefficient, while having a high rust-preventing effect for iron-based sliding sections. The lubricating oil composition of the invention is therefore suitable for prolonged use, and exhibits a notable effect for energy savings as well due to its stable low frictional coefficient property.Type: GrantFiled: December 10, 2010Date of Patent: March 29, 2016Assignee: JX NIPPON OIL & ENERGY CORPORATIONInventors: Tomonari Matsumoto, Fumiyuki Nara, Takeshi Okido, Katsuya Takigawa
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Publication number: 20160053153Abstract: The present invention provides a working fluid composition for a refrigerating machine, comprising: a refrigerating machine oil comprising, as a base oil, a mixed ester of (A) a complex ester obtainable by synthesis of at least one polyhydric alcohol selected from neopentyl glycol, trimethylolpropane and pentaerythritol, a C6-C12 polybasic acid, and a C4-C18 monohydric alcohol or a C4-C18 monocarboxylic fatty acid, and (B) a polyol ester obtainable by synthesis of from at least one polyhydric alcohol selected from neopentyl glycol, trimethylolpropane, pentaerythritol and dipentaerythritol, and a C4-C18 monocarboxylic fatty acid, in a mass ratio of (A) the complex ester/(B) the polyol ester of 5/95 to 95/5; and tetrafluoropropene as a refrigerant, wherein a refrigerant dissolved viscosity, at a temperature of 80° C. and an absolute pressure of 1.6 MPa, is 1.5 mm2/s or more.Type: ApplicationFiled: March 14, 2014Publication date: February 25, 2016Applicant: JX NIPPON OIL & ENERGY CORPORATIONInventors: Takeshi OKIDO, Souichirou KONNO