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).

  • Patent number: 9783762
    Abstract: 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: Grant
    Filed: January 16, 2015
    Date of Patent: October 10, 2017
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Hitoshi Takahashi, Takeshi Okido, Hiroko Shimpo, Souichirou Konno
  • Patent number: 9752091
    Abstract: 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: Grant
    Filed: July 25, 2013
    Date of Patent: September 5, 2017
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Masanori Saito, Ken Sawada, Takeshi Okido, Kuniko Adegawa
  • Patent number: 9725630
    Abstract: 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: Grant
    Filed: March 14, 2014
    Date of Patent: August 8, 2017
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Takeshi Okido, Souichirou Konno
  • Patent number: 9719001
    Abstract: 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: Grant
    Filed: March 14, 2014
    Date of Patent: August 1, 2017
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Takeshi Okido, Souichirou Konno
  • Patent number: 9676983
    Abstract: 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: Grant
    Filed: November 28, 2013
    Date of Patent: June 13, 2017
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Masanori Saito, Takeshi Okido, Souichirou Konno, Kuniko Adegawa
  • Publication number: 20170073602
    Abstract: 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: Application
    Filed: February 2, 2015
    Publication date: March 16, 2017
    Applicant: JX Nippon Oil & Energy Corporation
    Inventors: Hitoshi Takahashi, Tsutomu Takahashi, Takeshi Okido, Hiroko Shimpo, Souichirou Konno
  • Publication number: 20170002291
    Abstract: 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: Application
    Filed: January 16, 2015
    Publication date: January 5, 2017
    Applicant: JX Nippon Oil & Energy Corporation
    Inventors: Hitoshi Takahashi, Takeshi Okido, Hiroko Shimpo, Souichirou Konno
  • Patent number: 9469801
    Abstract: 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: Grant
    Filed: February 28, 2013
    Date of Patent: October 18, 2016
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Masanori Saito, Takeshi Okido, Ken Sawada, Kuniko Adegawa
  • Publication number: 20160289523
    Abstract: 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: Application
    Filed: March 14, 2014
    Publication date: October 6, 2016
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Takeshi OKIDO, Souichirou KONNO
  • Patent number: 9296976
    Abstract: 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: Grant
    Filed: December 10, 2010
    Date of Patent: March 29, 2016
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Tomonari Matsumoto, Fumiyuki Nara, Takeshi Okido, Katsuya Takigawa
  • Publication number: 20160053153
    Abstract: 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: Application
    Filed: March 14, 2014
    Publication date: February 25, 2016
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Takeshi OKIDO, Souichirou KONNO
  • Patent number: 9234155
    Abstract: A refrigerating machine oil composition comprising at least one ester additive selected from tetraesters of pentaerythritol and one selected from fatty acids having 5 to 18 carbon atoms and hexaesters of dipentaerythritol and one selected from fatty acids having 5 to 18 carbon atoms, and a base oil that is an ester other than the ester additive, in which the content of the ester additive is 2 to 20 mass % based on the total amount of the refrigerating machine oil composition, and the kinematic viscosity of the refrigerating machine oil composition at 40° C. is 3 to 500 mm2/s.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: January 12, 2016
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Masanori Saito, Takeshi Okido, Hiroshi Eto, Kuniko Adegawa
  • Publication number: 20150344760
    Abstract: 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: Application
    Filed: November 28, 2013
    Publication date: December 3, 2015
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Masanori SAITO, Takeshi OKIDO, Souichirou KONNO, Kuniko ADEGAWA
  • Patent number: 9090806
    Abstract: The working fluid composition for a refrigerating machine of this invention comprises a base oil containing an ether-based compound, an amine salt of an acidic phosphoric acid ester, at least one compound selected from the group consisting of amine-based antioxidants, metal inactivating agents and alicyclic epoxy compounds, and an unsaturated fluorinated hydrocarbon refrigerant. The refrigerating machine oil of the invention comprises a base oil containing an ether-based compound, an amine salt of an acidic phosphoric acid ester, and at least one compound selected from the group consisting of amine-based antioxidants, metal inactivating agents and alicyclic epoxy compounds, and it is to be used together with an unsaturated fluorinated hydrocarbon refrigerant.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: July 28, 2015
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Katsuya Takigawa, Yuji Shimomura, Masanori Saito, Ken Sawada, Takeshi Okido
  • Publication number: 20150184103
    Abstract: 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: Application
    Filed: July 25, 2013
    Publication date: July 2, 2015
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Masanori Saito, Ken Sawada, Takeshi Okido, Kuniko Adegawa
  • Patent number: 9005470
    Abstract: The refrigerating machine oil of the invention includes an ester of a polyhydric alcohol and a fatty acid, wherein the molar ratio of C4-C6 fatty acid and C7-C9 branched fatty acid in the fatty acid is between 15:85 and 90:10, the C4-C6 fatty acid includes 2-methylpropanoic acid, and the ratio of the total C4-C6 fatty acid and C7-C9 branched fatty acid in the total fatty acids composing the ester is at least 20 mol %. The working fluid composition for a refrigerating machine according to the invention comprises the refrigerating machine oil, a difluoromethane refrigerant and/or an unsaturated fluorinated hydrocarbon refrigerant.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: April 14, 2015
    Assignee: JX Nippon & Energy Corporation
    Inventors: Katsuya Takigawa, Masanori Saito, Takeshi Okido, Kuniko Takahashi
  • Publication number: 20150041704
    Abstract: 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: Application
    Filed: March 25, 2013
    Publication date: February 12, 2015
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Masanori Saito, Takeshi Okido, Souichirou Konno, Kuniko Adegawa
  • Publication number: 20150028252
    Abstract: A refrigerating machine oil composition comprising at least one ester additive selected from tetraesters of pentaerythritol and one selected from fatty acids having 5 to 18 carbon atoms and hexaesters of dipentaerythritol and one selected from fatty acids having 5 to 18 carbon atoms, and a base oil that is an ester other than the ester additive, in which the content of the ester additive is 2 to 20 mass % based on the total amount of the refrigerating machine oil composition, and the kinematic viscosity of the refrigerating machine oil composition at 40° C. is 3 to 500 mm2/s.
    Type: Application
    Filed: February 19, 2013
    Publication date: January 29, 2015
    Inventors: Masanori Saito, Takeshi Okido, Hiroshi Eto, Kuniko Adegawa
  • Publication number: 20150014575
    Abstract: 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: Application
    Filed: February 28, 2013
    Publication date: January 15, 2015
    Inventors: Masanori Saito, Takeshi Okido, Ken Sawada, Kuniko Adegawa
  • Publication number: 20150008358
    Abstract: 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: Application
    Filed: October 25, 2012
    Publication date: January 8, 2015
    Inventors: Takeshi Okido, Masanori Saito, Kuniko Adegawa