Patents by Inventor Akira Tada

Akira Tada 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: 20220179663
    Abstract: A network system includes at least one transmission path and a plurality of terminal devices each connected to the transmission path. Each of the terminal devices includes a transceiver, a startup processing unit, and a switching unit. The transceiver is configured to operate either one of a first standby unit and a second standby unit according to a switching instruction. The switching unit is configured to output the switching instruction to the transceiver to operate the second standby unit when a transmission path empty period lasts for a predetermined preparation time or more after a non-designation period has lasted for a predetermined operation determination time or more.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 9, 2022
    Inventors: Akira TADA, Tomohisa KISHIGAMI
  • Publication number: 20220002631
    Abstract: A lubricating oil composition including: a lubricant base oil; (A) a triazole metal deactivator in an amount of 0.005 to 0.03 mass % in terms of nitrogen on the basis of the total mass of the composition; and (B1) a succinimide compound represented by the following general formula (1) in an amount of 0.0005 to 0.02 mass % in terms of nitrogen on the basis of the total mass of the composition: wherein in the general formula (1), R1 and R2 each independently represent a hydrogen atom or a C1-36 linear or branched chain alkyl or alkenyl group, and at least one of R1 and R2 is a C8-36 linear or branched chain alkyl or alkenyl group, and n represents an integer of 1 to 10.
    Type: Application
    Filed: November 6, 2019
    Publication date: January 6, 2022
    Applicant: ENEOS Corporation
    Inventors: Yohei SUSUKIDA, Yasushi ONUMATA, Akira TADA, Noriko AYAME
  • Patent number: 11208608
    Abstract: 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: Grant
    Filed: October 20, 2017
    Date of Patent: December 28, 2021
    Assignee: ENEOS CORPORATION
    Inventors: Kentaro Yamaguchi, Akira Tada, Tatsuki Nakajima, Takeshi Okido, Hidetoshi Ogata
  • Publication number: 20210395634
    Abstract: A lubricating oil composition including: a lubricant base oil; (A) a calcium salicylate detergent in an amount of 0.005 to 0.03 mass % in terms of calcium on the basis of the total mass of the composition; (B) a succinimide ashless dispersant in an amount of 0.005 to 0.25 mass % in terms of nitrogen on the basis of the total mass of the composition; (C) a nitrogen-containing antioxidant in an amount of 0.005 to 0.15 mass % in terms of nitrogen on the basis of the total mass of the composition; and optionally (D) a nitrogen-containing friction modifier in an amount of no more than 0.03 mass % in terms of nitrogen on the basis of the total mass of the composition, wherein a total content of any metallic detergent is 0.005 to 0.03 mass % in terms of metal on the basis of the total mass of the composition.
    Type: Application
    Filed: November 6, 2019
    Publication date: December 23, 2021
    Applicant: ENEOS Corporation
    Inventors: Yohei SUSUKIDA, Yasushi ONUMATA, Akira TADA, Noriko AYAME
  • Publication number: 20210395635
    Abstract: A lubricating oil composition including: a lubricant base oil; (A) a calcium salicylate detergent in an amount of 0.005 to 0.03 mass % in terms of calcium on the basis of the total mass of the composition; and (B) a phosphite ester compound represented by the following general formula (1) in an amount of 0.01 to 0.06 mass % in terms of phosphorus on the basis of the total mass of the composition: wherein in the general formula (1), R1 and R2 are each independently a C5-20 group represented by the following general formula (2): wherein in the general formula (2), R3 is a C2-17 linear chain hydrocarbon group, and R4 is a C3-17 linear chain hydrocarbon group, and X1 is an oxygen atom or a sulfur atom.
    Type: Application
    Filed: November 6, 2019
    Publication date: December 23, 2021
    Applicant: ENEOS Corporation
    Inventors: Yohei SUSUKIDA, Yasushi ONUMATA, Akira TADA
  • Publication number: 20210243046
    Abstract: A vehicle relay device includes a plurality of physical (PHY) modules and a PHY manager. The plurality of PHY modules are configured to communicate in accordance with an Ethernet standard. The PHY manager is connected to the plurality of PHY modules. The PHY manager changes an operation setting of each of the plurality of PHY modules and monitors an operation state of each of the plurality of PHY modules.
    Type: Application
    Filed: April 20, 2021
    Publication date: August 5, 2021
    Inventor: Akira TADA
  • Publication number: 20210216931
    Abstract: The time required to modify order allocation rules is shortened in a production planning system. A performance rule is generated, in which a manufacturing condition is set as the input and a manufacturing facility is set as the output, based on allocation performance data representing a performance of allocating the manufacturing facility for the manufacturing condition. A comparison table is generated representing a difference between the performance rule and an existing rule in which the manufacturing condition is set as the input and the manufacturing facility is set as the output. A modification rule is generated in which the existing rule is modified according to a user operation on the comparison table; and an evaluation index is calculated for production plan data corresponding to each of the existing rule and the modification rule. The rule modification unit generates the comparison table including a modification plan for the existing rule.
    Type: Application
    Filed: November 6, 2020
    Publication date: July 15, 2021
    Inventors: Shintaro URABE, Yuuichi SUGINISHI, Akira TADA, Satoshi FUKUDA
  • Publication number: 20210054301
    Abstract: 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: Application
    Filed: February 15, 2017
    Publication date: February 25, 2021
    Applicants: JXTG NIPPON OIL & ENERGY CORPORATION, JXTG NIPPON OIL & ENERGY CORPORATION
    Inventors: Yohei SHONO, Akira TADA, Yuya MIZUTANI, Takeshi OKIDO, Hidetoshi OGATA, Tatsuki NAKAJIMA
  • Patent number: 10759982
    Abstract: 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: Grant
    Filed: February 15, 2017
    Date of Patent: September 1, 2020
    Assignee: JXTG NIPPON OIL & ENERGY CORPORATION
    Inventors: Yohei Shono, Akira Tada, Yuya Mizutani, Takeshi Okido, Hidetoshi Ogata
  • Publication number: 20200199476
    Abstract: 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: Application
    Filed: October 20, 2017
    Publication date: June 25, 2020
    Applicant: JXTG NIPPON OIL & ENERGY CORPORATION
    Inventors: Kentaro YAMAGUCHI, Akira TADA, Tatsuki NAKAJIMA, Takeshi OKIDO, Hidetoshi OGATA
  • Patent number: 10611984
    Abstract: The refrigerating machine oil according to the present invention comprises a polyalkylene glycol represented by the following formula (1): R1—(OR3)n—OR2??(1) [R1 and R2 may be the same or different from each other and each represent a hydrogen atom, an alkyl group having from 1 to 5 carbon atoms, or an acyl group having from 2 to 5 carbon atoms, R3 represents an alkylene group having from 2 to 4 carbon atoms, n represents an integer such that a number average molecular weight of the polyalkylene glycol represented by the formula (1) is from 1000 to 2500] the polyalkylene glycol having a ratio of the weight average molecular weight Mw to the number average molecular weight Mn, Mw/Mn, of from 1.00 to 1.15, the refrigerating machine oil being used with a mildly flammable hydrofluorocarbon refrigerant.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: April 7, 2020
    Assignee: JXTG Nippon Oil & Energy Corporation
    Inventors: Hitoshi Takahashi, Ken Sawada, Akira Tada, Souichirou Konno
  • Patent number: 10550351
    Abstract: The present invention provides a refrigerating machine oil comprising at least one oxygen-containing oil having a carbon/oxygen molar ratio of 2.5 or more and 5.8 or less as a base oil, and the refrigerating machine oil being used with a trifluoroethylene refrigerant.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: February 4, 2020
    Assignees: JX NIPPON OIL & ENERGY CORPORATION, AGC INC.
    Inventors: Hitoshi Takahashi, Tsutomu Takahashi, Akira Tada, Souichirou Konno
  • Patent number: 10494585
    Abstract: The present invention provides a refrigerating machine oil comprising: an ester of a polyhydric alcohol and a fatty acid as a base oil; and an ether compound of a polyhydric alcohol, the refrigerating machine oil being used with an unsaturated hydrofluorocarbon refrigerant.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: December 3, 2019
    Assignee: JXTG Nippon Oil & Energy Corporation
    Inventors: Akira Tada, Ken Sawada
  • Publication number: 20190161701
    Abstract: The present invention provides a refrigerating machine oil including a lubricating base oil and a compound represented by the following formula (A): wherein Ra and Rb each independently represent a monovalent hydrocarbon group, Rc represents a divalent hydrocarbon group, X represents a polar group, and Za and Zb each independently represent oxygen atom or sulfur atom.
    Type: Application
    Filed: July 28, 2017
    Publication date: May 30, 2019
    Applicant: JXTG NIPPON OIL & ENERGY CORPORATION
    Inventors: Yohei SHONO, Yuya MIZUTANI, Kentaro YAMAGUCHI, Akira TADA, Hidetoshi OGATA
  • Publication number: 20190078005
    Abstract: 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: Application
    Filed: February 15, 2017
    Publication date: March 14, 2019
    Applicant: JXTG NIPPON OIL & ENERGY CORPORATION
    Inventors: Yohei SHONO, Akira TADA, Yuya MIZUTANI, Takeshi OKIDO, Hidetoshi OGATA
  • Publication number: 20180265801
    Abstract: The refrigerating machine oil according to the present invention comprises a polyalkylene glycol represented by the following formula (1): R1—(OR3)n—OR2??(1) [R1 and R2 may be the same or different from each other and each represent a hydrogen atom, an alkyl group having from 1 to 5 carbon atoms, or an acyl group having from 2 to 5 carbon atoms, R3 represents an alkylene group having from 2 to 4 carbon atoms, n represents an integer such that a number average molecular weight of the polyalkylene glycol represented by the formula (1) is from 1000 to 2500] the polyalkylene glycol having a ratio of the weight average molecular weight Mw to the number average molecular weight Mn, Mw/Mn, of from 1.00 to 1.15, the refrigerating machine oil being used with a mildly flammable hydrofluorocarbon refrigerant.
    Type: Application
    Filed: May 21, 2018
    Publication date: September 20, 2018
    Applicant: JXTG Nippon Oil & Energy Corporation
    Inventors: Hitoshi Takahashi, Ken Sawada, Akira Tada, Souichirou Konno
  • Patent number: 10053647
    Abstract: The present invention provides a working fluid composition for a refrigerating machine, comprising a refrigerating machine oil that comprises an ester of a polyhydric alcohol and a fatty acid, an epoxy compound, and a phosphorus compound, and a fluoropropene refrigerant, wherein the polyhydric alcohol constituting the ester comprises pentaerythritol and dipentaerythritol, the fatty acid constituting the ester comprises at least one selected from fatty acids having 4 to 9 carbon atoms, and the epoxy compound and the phosphorus compound satisfy a condition represented by the following formula (1). [ Formula ? ? 1 ] ? 0.10 ? ( N E M E · W E ) ( N P M P · W P ) ? 1.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: August 21, 2018
    Assignees: Denso Corporation, Kabushki Kaisha Toyota Jidoshokki, JX Nippon Oil & Energy Corporation
    Inventors: Masataka Muto, Hajime Mukawa, Takekazu Kano, Genki Hayashi, Kazuki Yamamoto, Takahiro Hoshida, Hitoshi Takahashi, Ken Sawada, Akira Tada, Souichirou Konno
  • Patent number: 10005981
    Abstract: The refrigerating machine oil according to the present invention comprises a polyalkylene glycol represented by the following formula (1): R1—(OR3)n—OR2??(1) [R1 and R2 may be the same or different from each other and each represent a hydrogen atom, an alkyl group having from 1 to 5 carbon atoms, or an acyl group having from 2 to 5 carbon atoms, R3 represents an alkylene group having from 2 to 4 carbon atoms, n represents an integer such that a number average molecular weight of the polyalkylene glycol represented by the formula (1) is from 1000 to 2500] the polyalkylene glycol having a ratio of the weight average molecular weight Mw to the number average molecular weight Mn, Mw/Mn, of from 1.00 to 1.15, the refrigerating machine oil being used with a mildly flammable hydrofluorocarbon refrigerant.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: June 26, 2018
    Assignee: JXTG Nippon Oil & Energy Corporation
    Inventors: Hitoshi Takahashi, Ken Sawada, Akira Tada, Souichirou Konno
  • Publication number: 20180044607
    Abstract: The present invention provides a refrigerating machine oil comprising: an ester of a polyhydric alcohol and a fatty acid as a base oil; and an ether compound of a polyhydric alcohol, the refrigerating machine oil being used with an unsaturated hydrofluorocarbon refrigerant.
    Type: Application
    Filed: February 12, 2016
    Publication date: February 15, 2018
    Applicant: JXTG Nippon Oil & Energy Corporation
    Inventors: Akira Tada, Ken Sawada
  • Patent number: 9834737
    Abstract: The present invention provides a refrigerating machine oil composition comprising an ester-based base oil, an epoxy compound, and a carbodiimide compound, the refrigerating machine oil composition being used with a refrigerant containing a fluoropropene in a refrigerating machine comprising a member containing polyethylene terephthalate and/or a member containing hydrogenated acrylonitrile butadiene rubber.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: December 5, 2017
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Hitoshi Takahashi, Ken Sawada, Akira Tada, Souichirou Konno