Patents by Inventor Fumiyuki Nara

Fumiyuki Nara 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).

  • Publication number: 20210032558
    Abstract: 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: Application
    Filed: February 6, 2019
    Publication date: February 4, 2021
    Applicant: ENEOS Corporation
    Inventors: Yohei SHONO, Fumiyuki NARA, Takeshi OKIDO, Hidetoshi OGATA
  • Publication number: 20200369979
    Abstract: 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: Application
    Filed: November 19, 2018
    Publication date: November 26, 2020
    Applicant: JXTG Nippon Oil & Energy Corporation
    Inventors: Fumiyuki NARA, Yohei SHONO, Takeshi OKIDO, Hidetoshi OGATA
  • Patent number: 10836975
    Abstract: The present invention provides a refrigerating machine oil comprising: a base oil; 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 a hydrogen atom or a monovalent hydrocarbon group; and an epoxy compound.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: November 17, 2020
    Assignee: ENEOS Corporation
    Inventors: Hitoshi Takahashi, Kentaro Yamaguchi, Souichirou Konno, Fumiyuki Nara
  • Publication number: 20200354645
    Abstract: 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: Application
    Filed: February 6, 2019
    Publication date: November 12, 2020
    Applicant: ENEOS Corporation
    Inventors: Yohei SHONO, Fumiyuki NARA, Takeshi OKIDO, Hidetoshi OGATA
  • Publication number: 20200308504
    Abstract: 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: Application
    Filed: November 19, 2018
    Publication date: October 1, 2020
    Applicant: JXTG Nippon Oil & Energy Corporation
    Inventors: Fumiyuki NARA, Yohei SHONO, Takeshi OKIDO, Hidetoshi OGATA
  • Publication number: 20170327763
    Abstract: The present invention provides a refrigerating machine oil comprising: a base oil; 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 a hydrogen atom or a monovalent hydrocarbon group; and an epoxy compound.
    Type: Application
    Filed: October 23, 2015
    Publication date: November 16, 2017
    Applicant: JXTG Nippon Oil & Energy Corporation
    Inventors: Hitoshi TAKAHASHI, Kentaro YAMAGUCHI, Souichirou KONNO, Fumiyuki NARA
  • Patent number: 9562182
    Abstract: A working fluid composition for a refrigerating machine comprising: a refrigerating machine oil containing at least one lubricating base oil selected from a mineral oil and a synthetic oil, and at least one phosphorus compound selected from a mono(alkylphenyl) diphenyl phosphate having a C3-C5 alkyl group and a di(alkylphenyl) phenyl phosphate having two C3-C5 alkyl groups, wherein a content of the phosphorus compound is 0.01 to 5% by mass based on a total amount of the refrigerating machine oil; and a hydrocarbon refrigerant having 2 to 4 carbon atoms.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: February 7, 2017
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Masanori Saito, Fumiyuki Nara, Tomonari Matsumoto, Kuniko Adegawa
  • 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
  • Patent number: 9243177
    Abstract: The working fluid composition for a refrigerating machine of the present invention comprises: a refrigerating machine oil comprising a mineral oil and an alkylbenzene in a mass ratio, the mineral oil/the alkylbenzene, of 85/15 to 15/85, wherein the mineral oil has a % CN by n-d-M ring analysis of 20 to 60, a pour point of ?15° C. or less and a kinematic viscosity at 40° C. of 1.5 to 15 mm2/s; and a hydrocarbon refrigerant having 2 to 4 carbon atoms, wherein the refrigerating machine oil having a kinematic viscosity at 40° C. of 2 to 12 mm2/s and a flash point of 120° C. or more.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: January 26, 2016
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Masanori Saito, Fumiyuki Nara, Tomonari Matsumoto, Kuniko Adegawa
  • Publication number: 20150115194
    Abstract: A working fluid composition for a refrigerating machine comprising: a refrigerating machine oil containing at least one lubricating base oil selected from a mineral oil and a synthetic oil, and at least one phosphorus compound selected from a mono(alkylphenyl) diphenyl phosphate having a C3-C5 alkyl group and a di(alkylphenyl) phenyl phosphate having two C3-C5 alkyl groups, wherein a content of the phosphorus compound is 0.01 to 5% by mass based on a total amount of the refrigerating machine oil; and a hydrocarbon refrigerant having 2 to 4 carbon atoms.
    Type: Application
    Filed: March 27, 2013
    Publication date: April 30, 2015
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Masanori Saito, Fumiyuki Nara, Tomonari Matsumoto, Kuniko Adegawa
  • Publication number: 20150014574
    Abstract: The working fluid composition for a refrigerating machine of the present invention comprises: a refrigerating machine oil comprising a mineral oil and an alkylbenzene in a mass ratio, the mineral oil/the alkylbenzene, of 85/15 to 15/85, wherein the mineral oil has a % CN by n-d-M ring analysis of 20 to 60, a pour point of ?15° C. or less and a kinematic viscosity at 40° C. of 1.5 to 15 mm2/s; and a hydrocarbon refrigerant having 2 to 4 carbon atoms, wherein the refrigerating machine oil having a kinematic viscosity at 40° C. of 2 to 12 mm2/s and a flash point of 120° C. or more.
    Type: Application
    Filed: February 28, 2013
    Publication date: January 15, 2015
    Inventors: Masanori Saito, Fumiyuki Nara, Tomonari Matsumoto, Kuniko Adegawa
  • Publication number: 20120322706
    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: Application
    Filed: December 10, 2010
    Publication date: December 20, 2012
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Tomonari Matsumoto, Fumiyuki Nara, Takeshi Okido, Katsuya Takigawa