Patents by Inventor Shigeharu Takagi

Shigeharu Takagi 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: 20230387412
    Abstract: A lithium-ion secondary battery of the present disclosure includes a cathode body layer, a separator layer, and an anode body layer in that order, wherein the anode body layer contains a solid electrolyte and an anode active material, and wherein the anode active material is graphite particles having a ratio of a crystallite size of a (004) plane to a crystallite size of a (110) plane (the crystallite size of the (004) plane/the crystallite size of the (110) plane) measured by X-ray crystal diffraction measurement using CuK? rays of 0.683 or more.
    Type: Application
    Filed: May 30, 2023
    Publication date: November 30, 2023
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Panasonic Holdings Corporation
    Inventors: Shigeharu TAKAGI, Mitsuhiro MURATA
  • Patent number: 9617886
    Abstract: An exhaust gas controlling catalyst includes zirconia particles; ceria particles which contact the zirconia particles, of which a mean particle size is smaller than a mean particle size of the zirconia particles; and an active metal that is supported on at least the ceria particles in a dispersed manner.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: April 11, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masao Watanabe, Shigeharu Takagi, Akira Morikawa, Takuto Hirose
  • Patent number: 9297288
    Abstract: Provided is an exhaust purification system for an internal combustion engine.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: March 29, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mayuko Osaki, Kazutoshi Akashi, Masao Watanabe, Shigeharu Takagi, Takeshi Nobukawa
  • Patent number: 9005558
    Abstract: An exhaust gas control apparatus for an internal combustion engine includes: a NOx purification catalyst arranged in an exhaust passage of the internal combustion engine; a degradation degree estimating unit estimating a degradation degree of the NOx purification catalyst; and an air-fuel ratio control unit adjusting an air-fuel ratio of exhaust gas flowing into the NOx purification catalyst, wherein, until the estimated degradation degree of the NOx purification catalyst reaches a predetermined degradation degree, the air-fuel ratio control unit adjusts the air-fuel ratio of the exhaust gas to a rich air-fuel ratio, and, when the estimated degradation degree of the NOx purification catalyst exceeds the predetermined degradation degree, the air-fuel ratio control unit changes the air-fuel ratio of the exhaust gas from the rich air-fuel ratio to a lean air-fuel ratio so that the NOx purification catalyst is regenerated.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: April 14, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masao Watanabe, Shigeharu Takagi, Keisuke Kishita, Noboru Otake, Akira Morikawa, Takuto Hirose, Yasutaka Nagai
  • Publication number: 20140134087
    Abstract: An exhaust gas control apparatus for an internal combustion engine includes: a NOx purification catalyst arranged in an exhaust passage of the internal combustion engine; a degradation degree estimating unit estimating a degradation degree of the NOx purification catalyst; and an air-fuel ratio control unit adjusting an air-fuel ratio of exhaust gas flowing into the NOx purification catalyst, wherein, until the estimated degradation degree of the NOx purification catalyst reaches a predetermined degradation degree, the air-fuel ratio control unit adjusts the air-fuel ratio of the exhaust gas to a rich air-fuel ratio, and, when the estimated degradation degree of the NOx purification catalyst exceeds the predetermined degradation degree, the air-fuel ratio control unit changes the air-fuel ratio of the exhaust gas from the rich air-fuel ratio to a lean air-fuel ratio so that the NOx purification catalyst is regenerated.
    Type: Application
    Filed: May 30, 2012
    Publication date: May 15, 2014
    Inventors: Masao Watanabe, Shigeharu Takagi, Keisuke Kishita, Noboru Otake, Akira Morikawa, Takuto Hirose, Yasutaka Nagai
  • Publication number: 20140127084
    Abstract: An exhaust gas controlling catalyst includes zirconia particles; ceria particles which contact the zirconia particles, of which a mean particle size is smaller than a mean particle size of the zirconia particles; and an active metal that is supported on at least the ceria particles in a dispersed manner.
    Type: Application
    Filed: March 23, 2012
    Publication date: May 8, 2014
    Inventors: Masao Watanabe, Shigeharu Takagi, Akira Morikawa, Takuto Hirose
  • Publication number: 20140124017
    Abstract: An excellent surface protective material having moisture proofness that is not deteriorated for a prolonged period of time is provided for a highly moisture proof surface protective material for a solar cell, containing a moisture proof film that comprises a substrate having on one surface thereof an inorganic thin film layer and has a water vapor permeability of less than 0.1 g/m2·day. The surface protective material for a solar cell contains: a moisture proof film that comprises a substrate having on one surface thereof an inorganic thin film layer and has a water vapor permeability of less than 0.1 g/m2·day, a weatherproof film on a side of the inorganic thin film layer of the moisture proof film; and a back surface film that has a melting point of 80° C. or more and 180° C. or less on the opposite side of the moisture proof film from the inorganic thin film layer.
    Type: Application
    Filed: January 30, 2012
    Publication date: May 8, 2014
    Applicant: MITSUBISHI PLASTICS, INC.
    Inventors: Osamu Akaike, Tetsuya Aya, Shigeharu Takagi, Tatsuya Ochiai, Natsuki Hira
  • Publication number: 20140000699
    Abstract: A moisture proof laminated film is provided that is excellent in transparency, has considerably high moisture proofness, and is suppressed in generation of bubbles between moisture proof films, even when plural moisture proof films are used. A moisture proof laminated film (1) containing a moisture proof film A (2) having a water vapor transmission rate (WTR (A)) at 40° C. and 90% RH of 1.0 (g/m2·day) or less and a moisture proof film B (3) containing a substrate (4) having on one surface thereof an inorganic layer (5) and having a water vapor transmission rate (WTR (B)) at 40° C. and 90% RH of 10% or less of the water vapor transmission rate (WTR (A)), which are laminated through an adhesive layer (7).
    Type: Application
    Filed: March 14, 2012
    Publication date: January 2, 2014
    Applicant: MITSUBISHI PLASTICS, INC.
    Inventors: Osamu Akaike, Shigeharu Takagi, Tetsuya Aya, Naoya Ninomiya
  • Patent number: 8604133
    Abstract: A graft copolymer having a side chain graft-polymerized by atom transfer living radical polymerization (ATRP) on a main chain polymerized by organotellurium-mediated living radical polymerization (TERP), wherein the molecular weight distribution is such that Mw/Mn is 1.5 or less. The graft copolymer is also such that a main chain moiety mainly consisting of the main chain and a side chain moiety mainly consisting of the side chain have microphase-separated structures. The graft copolymer has a narrow molecular weight distribution and forms microphase-separated structures through self organization of hydrophobic and hydrophilic moieties.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: December 10, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, Yamaguchi University
    Inventors: Shigeharu Takagi, Mitsuru Higa
  • Patent number: 8329766
    Abstract: A functional membrane and a production method thereof including: an ion irradiation step in which a polymer film substrate is irradiated with high energy heavy ions at 104 to 1014 ions/cm2, to generate active species in the film substrate; and a graft polymerization step in which after the ion irradiation step, the film substrate is added with one or more monomers selected from a group A consisting of monomers each having a functional group and 1 to 80 mol % of a monomer including a group B consisting of a crosslinking agent(s) for the group A monomer(s), and the film substrate and the monomer(s) are graft-polymerized. There is obtained a functional membrane having high functionality in conjunction with the gas barrier property intrinsically possessed by a polymer film substrate, in particular, a polymer electrolyte membrane optimal as a polymer electrolyte membrane for use in fuel cells, high in proton conductivity and excellent in gas barrier property.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: December 11, 2012
    Assignees: Japan Atomic Energy Agency, Toyota Jidosha Kabushiki Kaisha
    Inventors: Shigeharu Takagi, Toshiya Saito, Misaki Kobayashi, Masaru Yoshida, Tetsuya Yamaki, Masaharu Asano
  • Patent number: 8173325
    Abstract: A functional membrane is provided, which has high functionality combined with the gas barrier performance and mechanical strength inherent in a polymer film substrate. In particular, a polymer electrolyte membrane is provided, which is excellent in terms of high proton conductivity and gas barrier performance and is most appropriate to serve as a polymer electrolyte membrane for fuel cells. A method for producing a functional membrane is provided, which comprises: a step of ion irradiation, in which active species are generated in a polymer film substrate containing nonconductive inorganic particles by irradiating the polymer film substrate with high-energy heavy ions to the extent of 104/cm2 to 1014/cm2; and a step of graft polymerization subsequent to the step of ion irradiation, in which one or more monomers selected from group A consisting of monomers containing useful functional groups are added such that the monomers are graft polymerized with the polymer film substrate.
    Type: Grant
    Filed: February 20, 2006
    Date of Patent: May 8, 2012
    Assignees: Japan Atomic Energy Agency, Toyota Jidosha Kabushiki Kaisha
    Inventors: Shigeharu Takagi, Misaki Kobayashi, Toshiya Saito, Masaru Yoshida, Masaharu Asano, Tetsuya Yamaki
  • Patent number: 8101668
    Abstract: This invention provides a novel graft polymer that has excellent proton conductivity, is capable of regulating hydrogen permeability, methanol permeability, and the like, and can serve as a starting material for a polymer electrolyte membrane, which facilitates moisture balance control and efficient operation of a fuel cell. A polymer electrolyte membrane composed of such graft polymer is also provided. This graft polymer comprises a main chain comprising a hydroxyl group-containing polymer and a graft chain comprising a polymer containing a sulfonic acid group-containing monomer.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: January 24, 2012
    Assignees: Toyota Jidosha Kabushiki Kaisha, Yamaguchi University
    Inventors: Shigeharu Takagi, Mitsuru Higa
  • Publication number: 20100173223
    Abstract: A graft copolymer having a side chain graft-polymerized by atom transfer living radical polymerization (ATRP) on a main chain polymerized by organotellurium-mediated living radical polymerization (TERP), wherein the molecular weight distribution is such that Mw/Mn is 1.5 or less. The graft copolymer is also such that a main chain moiety mainly consisting of the main chain and a side chain moiety mainly consisting of the side chain have microphase-separated structures. The graft copolymer has a narrow molecular weight distribution and forms microphase-separated structures through self organization of hydrophobic and hydrophilic moieties.
    Type: Application
    Filed: February 14, 2006
    Publication date: July 8, 2010
    Applicants: Toyota Jidosha Kabushiki Kaisha, Yamaguchi University
    Inventors: Shigeharu Takagi, Mitsuru Higa
  • Publication number: 20080176966
    Abstract: This invention provides a novel graft polymer that has excellent proton conductivity, is capable of regulating hydrogen permeability, methanol permeability, and the like, and can serve as a starting material for a polymer electrolyte membrane, which facilitates moisture balance control and efficient operation of a fuel cell. A polymer electrolyte membrane composed of such graft polymer is also provided. This graft polymer comprises a main chain comprising a hydroxyl group-containing polymer and a graft chain comprising a polymer containing a sulfonic acid group-containing monomer.
    Type: Application
    Filed: March 15, 2006
    Publication date: July 24, 2008
    Inventors: Shigeharu Takagi, Mitsuru Higa
  • Publication number: 20080171251
    Abstract: A functional membrane and a production method thereof including: an ion irradiation step in which a polymer film substrate is irradiated with high energy heavy ions at 10 4 to 10 14 ions/cm2, to generate active species in the film substrate; and a graft polymerization step in which after the ion irradiation step, the film substrate is added with one or more monomers selected from a group A consisting of monomers each having a functional group and 1 to 80 mol % of a monomer including a group B consisting of a crosslinking agent(s) for the group A monomer(s), and the film substrate and the monomer(s) are graft-polymerized. There is obtained a functional membrane having high functionality in conjunction with the gas barrier property intrinsically possessed by a polymer film substrate, in particular, a polymer electrolyte membrane optimal as a polymer electrolyte membrane for use in fuel cells, high in proton conductivity and excellent in gas barrier property.
    Type: Application
    Filed: February 23, 2006
    Publication date: July 17, 2008
    Applicants: JAPAN ATOMIC ENERGY AGENCY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shigeharu Takagi, Toshiya Saito, Misaki Kobayashi, Masaru Yoshida, Tetsuya Yamaki, Masaharu Asano
  • Publication number: 20080160374
    Abstract: A functional membrane is provided, which has high functionality combined with the gas barrier performance and mechanical strength inherent in a polymer film substrate. In particular, a polymer electrolyte membrane is provided, which is excellent in terms of high proton conductivity and gas barrier performance and is most appropriate to serve as a polymer electrolyte membrane for fuel cells. A method for producing a functional membrane is provided, which comprises: a step of ion irradiation, in which active species are generated in a polymer film substrate containing nonconductive inorganic particles by irradiating the polymer film substrate with high-energy heavy ions to the extent of 104/cm2 to 1014/cm2; and a step of graft polymerization subsequent to the step of ion irradiation, in which one or more monomers selected from group A consisting of monomers containing useful functional groups are added such that the monomers are graft polymerized with the polymer film substrate.
    Type: Application
    Filed: February 20, 2006
    Publication date: July 3, 2008
    Applicants: Japan Atomic Energy Agency, Toyota Jidosha Kabushiki Kaisha
    Inventors: Shigeharu Takagi, Misaki Kobayashi, Toshiya Saito, Masaru Yoshida, Masaharu Asano, Tetsuya Yamaki