Patents by Inventor Makoto Akutsu

Makoto Akutsu 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: 20230187779
    Abstract: A power storage device includes a first electrode, a second electrode, a separator interposed between the first electrode and the second electrode, and a barrier layer interposed between at least one of the following: between the first electrode and the separator and between the second electrode and the separator, wherein the barrier layer includes a complexing agent and a resin material.
    Type: Application
    Filed: February 25, 2021
    Publication date: June 15, 2023
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Makoto Akutsu, Takao Sato, Yuko Ogawa
  • Publication number: 20230170528
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode including a positive electrode active material, a separator, a negative electrode facing the positive electrode with the separator interposed therebetween, and a non-aqueous liquid electrolyte, wherein the non-aqueous liquid electrolyte includes a non-aqueous solvent, and 6-alkylthio-1,3,5-triazine-2,4-dithiol; at least a portion of the 6-alkylthio-1,3,5-triazine-2,4-dithiol is dissolved in the non-aqueous solvent; and the alkylthio group at a 6th position preferably has an alkyl group with 1 to 8 carbon atoms.
    Type: Application
    Filed: February 25, 2021
    Publication date: June 1, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takao Sato, Makoto Akutsu, Yuko Ogawa
  • Publication number: 20220285104
    Abstract: An electrochemical device includes a positive electrode having a positive electrode material layer containing a conductive polymer doped with a first anion and a second anion, a negative electrode having a negative electrode material layer storing and releasing lithium ions, and a nonaqueous electrolytic solution having lithium ionic conductivity. The second anion is more easily dedoped from the conductive polymer than the first anion. At an end period of charge of the electrochemical device, a number of moles M1 of the first anion and a number of moles M2 of the second anion respectively doped in the conductive polymer satisfy a relationship of M1<M2. At an end period of discharge of the electrochemical device, a number of moles M3 of the first anion and a number of moles M4 of the second anion respectively doped in the conductive polymer satisfy a relationship of M3>M4.
    Type: Application
    Filed: December 16, 2021
    Publication date: September 8, 2022
    Inventors: Susumu NOMOTO, Yasuyuki ITO, Nao MATSUMURA, Hiroki HAYASHI, Makoto AKUTSU, Tougo ENDOU
  • Publication number: 20210359304
    Abstract: A positive electrode active material for an electrochemical device has a fiber shape or a grain-aggregate shape. The positive electrode active material includes an inner core part having a fiber shape or a grain-aggregate shape, and a superficial part covering at least part of the inner core part. The inner core part contains a first conductive polymer, and the superficial part contains a second conductive polymer that is different from the first conductive polymer.
    Type: Application
    Filed: July 30, 2021
    Publication date: November 18, 2021
    Inventors: Hiroki HAYASHI, Nao MATSUMURA, Yasuyuki ITO, Susumu NOMOTO, Makoto AKUTSU, Tougo ENDOU
  • Patent number: 10923296
    Abstract: A method for manufacturing a positive electrode for a power storage device includes the steps of: preparing a current collector that includes a first region and a second region on a surface of the current collector, the first region having a carbon layer formed on the surface, the second region having the surface exposed; and forming a conductive polymer layer selectively on a surface of the carbon layer by immersing the current collector in an electrolytic solution containing a raw material monomer and then conducting electrolytic polymerization of the raw material monomer.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: February 16, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Tougo Endou, Yasuyuki Ito, Susumu Nomoto, Nao Matsumura, Hiroki Hayashi, Makoto Akutsu
  • Publication number: 20180374661
    Abstract: A method for manufacturing a positive electrode for a power storage device includes the steps of: preparing a current collector that includes a first region and a second region on a surface of the current collector, the first region having a carbon layer formed on the surface, the second region having the surface exposed; and forming a conductive polymer layer selectively on a surface of the carbon layer by immersing the current collector in an electrolytic solution containing a raw material monomer and then conducting electrolytic polymerization of the raw material monomer.
    Type: Application
    Filed: August 29, 2018
    Publication date: December 27, 2018
    Inventors: TOUGO ENDOU, YASUYUKI ITO, SUSUMU NOMOTO, NAO MATSUMURA, HIROKI HAYASHI, MAKOTO AKUTSU
  • Publication number: 20180323432
    Abstract: A positive electrode active material for an electrochemical device has a fiber shape or a grain-aggregate shape. The positive electrode active material includes an inner core part having a fiber shape or a grain-aggregate shape, and a superficial part covering at least part of the inner core part. The inner core part contains a first conductive polymer, and the superficial part contains a second conductive polymer that is different from the first conductive polymer.
    Type: Application
    Filed: July 17, 2018
    Publication date: November 8, 2018
    Inventors: HIROKI HAYASHI, NAO MATSUMURA, YASUYUKI ITO, SUSUMU NOMOTO, MAKOTO AKUTSU, TOUGO ENDOU
  • Publication number: 20180261403
    Abstract: An electrochemical device includes a positive electrode having a positive electrode material layer containing a conductive polymer doped with a first anion and a second anion, a negative electrode having a negative electrode material layer storing and releasing lithium ions, and a nonaqueous electrolytic solution having lithium ionic conductivity. The second anion is more easily dedoped from the conductive polymer than the first anion. At an end period of charge of the electrochemical device, a number of moles M1 of the first anion and a number of moles M2 of the second anion respectively doped in the conductive polymer satisfy a relationship of M1<M2. At an end period of discharge of the electrochemical device, a number of moles M3 of the first anion and a number of moles M4 of the second anion respectively doped in the conductive polymer satisfy a relationship of M3>M4.
    Type: Application
    Filed: May 11, 2018
    Publication date: September 13, 2018
    Inventors: SUSUMU NOMOTO, YASUYUKI ITO, NAO MATSUMURA, HIROKI HAYASHI, MAKOTO AKUTSU, TOUGO ENDOU
  • Patent number: 4510511
    Abstract: A picture recording method and apparatus comprising a gravure roll disposed with on the surface thereof a plurality of micro recesses to keep an ink containing an evaporable coloring matter therein, a platen roll arranged parallel and adjacent to the gravure roll, a recording medium so partially wound on the platen roll as to be fed by the platen roll, discharge electrodes arranged parallel to the gravure roll between the gravure roll and platen roll to evaporate the ink kept within the micro recesses and to adhere it by making it fly to the recording medium and a high voltage generating unit to apply a high voltage on the discharge electrodes in correspondence to a picture signal, in order to enable to record a clear picture on the recording medium with high speed.
    Type: Grant
    Filed: October 6, 1983
    Date of Patent: April 9, 1985
    Inventor: Makoto Akutsu