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).
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Publication number: 20230387412Abstract: 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: ApplicationFiled: May 30, 2023Publication date: November 30, 2023Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Panasonic Holdings CorporationInventors: Shigeharu TAKAGI, Mitsuhiro MURATA
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Patent number: 9617886Abstract: 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: GrantFiled: March 23, 2012Date of Patent: April 11, 2017Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masao Watanabe, Shigeharu Takagi, Akira Morikawa, Takuto Hirose
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Patent number: 9297288Abstract: Provided is an exhaust purification system for an internal combustion engine.Type: GrantFiled: December 16, 2011Date of Patent: March 29, 2016Assignee: Toyota Jidosha Kabushiki KaishaInventors: Mayuko Osaki, Kazutoshi Akashi, Masao Watanabe, Shigeharu Takagi, Takeshi Nobukawa
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Patent number: 9005558Abstract: 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: GrantFiled: May 30, 2012Date of Patent: April 14, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masao Watanabe, Shigeharu Takagi, Keisuke Kishita, Noboru Otake, Akira Morikawa, Takuto Hirose, Yasutaka Nagai
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Publication number: 20140134087Abstract: 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: ApplicationFiled: May 30, 2012Publication date: May 15, 2014Inventors: Masao Watanabe, Shigeharu Takagi, Keisuke Kishita, Noboru Otake, Akira Morikawa, Takuto Hirose, Yasutaka Nagai
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Publication number: 20140127084Abstract: 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: ApplicationFiled: March 23, 2012Publication date: May 8, 2014Inventors: Masao Watanabe, Shigeharu Takagi, Akira Morikawa, Takuto Hirose
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Publication number: 20140124017Abstract: 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: ApplicationFiled: January 30, 2012Publication date: May 8, 2014Applicant: MITSUBISHI PLASTICS, INC.Inventors: Osamu Akaike, Tetsuya Aya, Shigeharu Takagi, Tatsuya Ochiai, Natsuki Hira
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Publication number: 20140000699Abstract: 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: ApplicationFiled: March 14, 2012Publication date: January 2, 2014Applicant: MITSUBISHI PLASTICS, INC.Inventors: Osamu Akaike, Shigeharu Takagi, Tetsuya Aya, Naoya Ninomiya
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Patent number: 8604133Abstract: 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: GrantFiled: February 14, 2006Date of Patent: December 10, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Yamaguchi UniversityInventors: Shigeharu Takagi, Mitsuru Higa
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Patent number: 8329766Abstract: 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: GrantFiled: February 23, 2006Date of Patent: December 11, 2012Assignees: Japan Atomic Energy Agency, Toyota Jidosha Kabushiki KaishaInventors: Shigeharu Takagi, Toshiya Saito, Misaki Kobayashi, Masaru Yoshida, Tetsuya Yamaki, Masaharu Asano
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Patent number: 8173325Abstract: 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: GrantFiled: February 20, 2006Date of Patent: May 8, 2012Assignees: Japan Atomic Energy Agency, Toyota Jidosha Kabushiki KaishaInventors: Shigeharu Takagi, Misaki Kobayashi, Toshiya Saito, Masaru Yoshida, Masaharu Asano, Tetsuya Yamaki
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Patent number: 8101668Abstract: 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: GrantFiled: March 15, 2006Date of Patent: January 24, 2012Assignees: Toyota Jidosha Kabushiki Kaisha, Yamaguchi UniversityInventors: Shigeharu Takagi, Mitsuru Higa
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Publication number: 20100173223Abstract: 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: ApplicationFiled: February 14, 2006Publication date: July 8, 2010Applicants: Toyota Jidosha Kabushiki Kaisha, Yamaguchi UniversityInventors: Shigeharu Takagi, Mitsuru Higa
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Publication number: 20080176966Abstract: 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: ApplicationFiled: March 15, 2006Publication date: July 24, 2008Inventors: Shigeharu Takagi, Mitsuru Higa
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Publication number: 20080171251Abstract: 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: ApplicationFiled: February 23, 2006Publication date: July 17, 2008Applicants: JAPAN ATOMIC ENERGY AGENCY, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shigeharu Takagi, Toshiya Saito, Misaki Kobayashi, Masaru Yoshida, Tetsuya Yamaki, Masaharu Asano
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Publication number: 20080160374Abstract: 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: ApplicationFiled: February 20, 2006Publication date: July 3, 2008Applicants: Japan Atomic Energy Agency, Toyota Jidosha Kabushiki KaishaInventors: Shigeharu Takagi, Misaki Kobayashi, Toshiya Saito, Masaru Yoshida, Masaharu Asano, Tetsuya Yamaki