Patents by Inventor Hiromasa Tawarayama
Hiromasa Tawarayama 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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Patent number: 11938471Abstract: A metal porous body has a skeleton of a three-dimensional network structure, an outer layer portion of the skeleton having a second pore smaller in size than a first pore formed by the skeleton, wherein the outer layer portion is a metal layer, and a water vapor reforming catalyst is supported in the outer layer portion.Type: GrantFiled: June 21, 2019Date of Patent: March 26, 2024Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Chihiro Hiraiwa, Naho Mizuhara, Mitsuyasu Ogawa, Takahiro Higashino, Hiromasa Tawarayama, Masatoshi Majima, Yoshitaka Ogasawara
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Patent number: 11883801Abstract: A steam reforming catalyst that promotes production of hydrogen from a gas containing a hydrocarbon in the presence of steam includes a carrier and two or more catalyst metals supported on the carrier and including a first metal and a second metal. The first metal includes Ni, the second metal includes at least one of Co and Ru, and the carrier is represented by LaNbO4 or La1-xSrxNbO4 where x is in a range of 0<x?0.12.Type: GrantFiled: May 22, 2019Date of Patent: January 30, 2024Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Chihiro Hiraiwa, Masatoshi Majima, Takahiro Higashino, Naho Mizuhara, Hiromasa Tawarayama
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Patent number: 11888185Abstract: A fuel cell includes a cell structure, an oxidizing agent flow path, a fuel flow path, and an anode-side current collector. The cell structure includes a cathode, an anode, and a solid electrolyte layer disposed between the cathode and the anode. The oxidizing agent flow path is formed adjacent to the cathode and away from the solid electrolyte layer. The oxidizing agent flow path is a flow path for supplying a gas that contains an oxidizing agent to the cathode. The fuel flow path is formed adjacent to the anode and away from the solid electrolyte layer. The fuel flow path is a flow path for supplying a fuel gas that contains water vapor and a hydrocarbon to the anode. The anode-side current collector is disposed adjacent to the anode and away from the solid electrolyte layer. The anode-side current collector is in contact with the anode.Type: GrantFiled: April 25, 2019Date of Patent: January 30, 2024Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Chihiro Hiraiwa, Takahiro Higashino, Masatoshi Majima, Hiromasa Tawarayama, Mitsuyasu Ogawa
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Publication number: 20240006642Abstract: A proton-conductive cell structure includes an air electrode, a hydrogen electrode, and a solid electrolyte layer disposed between the air electrode and the hydrogen electrode, wherein the solid electrolyte layer includes at least a first solid electrolyte layer formed of a compact material. The first solid electrolyte layer includes a metal oxide having a perovskite structure and represented by Formula 1 below, a ratio of Sr to a total amount of Ba and Sr in an air-electrode-side near-surface region of the first solid electrolyte layer is 0.4 or more, and a ratio of Sr to a total amount of Ba and Sr in a hydrogen-electrode-side near-surface region of the first solid electrolyte layer is 0.003 to 0.3.Type: ApplicationFiled: May 28, 2021Publication date: January 4, 2024Inventors: Takahiro HIGASHINO, Yohei NODA, Naho MIZUHARA, Mitsuyasu OGAWA, Hiromasa TAWARAYAMA, Masatoshi MAJIMA, Akiko FUNAKOSHI
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Patent number: 11757101Abstract: The metal porous body having a framework of a three-dimensional network structure is disclosed. The framework is formed of a metal film, the framework has an interior that is hollow, and the metal film contains titanium metal or titanium alloy as a main component.Type: GrantFiled: March 13, 2018Date of Patent: September 12, 2023Assignee: Sumitomo Electric Industries, Ltd.Inventors: Koma Numata, Masatoshi Majima, Tomoyuki Awazu, Mitsuyasu Ogawa, Takahiro Higashino, Hiromasa Tawarayama
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Publication number: 20230080341Abstract: A metal porous body sheet includes a metal porous body having a three-dimensional mesh structure and has a first main surface and a second main surface that is a reverse surface to the first main surface. The first main surface is formed with multiple holes extending from the first main surface toward the second main surface along a first direction.Type: ApplicationFiled: January 21, 2021Publication date: March 16, 2023Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Takahiro HIGASHINO, Kazuki OKUNO, Hiromasa TAWARAYAMA, Masatoshi MAJIMA, Soichiro OKUMURA
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Patent number: 11545690Abstract: A proton conductor contains a metal oxide that has a perovskite structure and that is represented by formula (1): AxB1-yMyO3-?, where an element A is at least one element selected from the group consisting of Ba, Ca, and Sr, an element B is at least one element selected from the group consisting of Ce and Zr, an element M is at least one element selected from the group consisting of Y, Yb, Er, Ho, Tm, Gd, In, and Sc, ? indicates an oxygen deficiency amount, and 0.95?x?1 and 0<y?0.5 are satisfied.Type: GrantFiled: November 16, 2018Date of Patent: January 3, 2023Assignees: KYOTO UNIVERSITY, SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Takahiro Higashino, Yohei Noda, Chihiro Hiraiwa, Naho Mizuhara, Mitsuyasu Ogawa, Hiromasa Tawarayama, Masatoshi Majima, Tetsuya Uda, Donglin Han, Takayuki Onishi
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Patent number: 11466343Abstract: A metal porous body having a three-dimensional network structure, includes: a framework forming the three-dimensional network structure; and a coating layer having fine pores and coating the framework, the three-dimensional network structure including a rib and a node connecting a plurality of ribs, the framework including an alkali-resistant first metal, the fine pores having an average fine pore diameter of 10 nm or more and 1 ?m or less, the coating layer including an alkali-resistant second metal and optionally including an alkali-soluble metal, the alkali-soluble metal being contained at a proportion of 0% by mass or more and 30% by mass or less with reference to a total mass of the framework and the coating layer.Type: GrantFiled: December 6, 2018Date of Patent: October 11, 2022Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITYInventors: Kazuki Okuno, Takahiro Higashino, Hiromasa Tawarayama, Masatoshi Majima, Haruki Masumura, Yoshiyuki Kuroda, Shigenori Mitsushima
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Publication number: 20210213430Abstract: A steam reforming catalyst that promotes production of hydrogen from a gas containing a hydrocarbon in the presence of steam includes a carrier and two or more catalyst metals supported on the carrier and including a first metal and a second metal. The first metal includes Ni, the second metal includes at least one of Co and Ru, and the carrier is represented by LaNbO4 or La1-xSrxNbO4 where x is in a range of 0<x?0.12.Type: ApplicationFiled: May 22, 2019Publication date: July 15, 2021Applicant: Sumitomo Electric Industries, Ltd.Inventors: Chihiro HIRAIWA, Masatoshi MAJIMA, Takahiro HIGASHINO, Naho MIZUHARA, Hiromasa TAWARAYAMA
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Publication number: 20210162393Abstract: A metal porous body has a skeleton of a three-dimensional network structure, an outer layer portion of the skeleton having a second pore smaller in size than a first pore formed by the skeleton, wherein the outer layer portion is a metal layer, and a water vapor reforming catalyst is supported in the outer layer portion.Type: ApplicationFiled: June 21, 2019Publication date: June 3, 2021Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Chihiro HIRAIWA, Naho MIZUHARA, Mitsuyasu OGAWA, Takahiro HIGASHINO, Hiromasa TAWARAYAMA, Masatoshi MAJIMA, Yoshitaka OGASAWARA
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Publication number: 20210119229Abstract: A metal porous sheet includes a metal porous body having a skeleton with a three-dimensional network structure, and has a main surface in which a trench is formed. A depth of the trench is more than or equal to 10 percent of a thickness of the metal porous sheet. An area of the trench is more than or equal to 10 percent of an area of the main surface in a plan view.Type: ApplicationFiled: April 6, 2020Publication date: April 22, 2021Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Koma NUMATA, Masatoshi MAJIMA, Mitsuyasu OGAWA, Takahiro HIGASHINO, Kazuki OKUNO, Hiromasa TAWARAYAMA
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Publication number: 20210083301Abstract: A metal porous body having a frame of a three-dimensional network structure, the frame being formed of a plurality of bone members connected to each other, the plurality of bone members defining openings in a surface of the metal porous body, the plurality of bone members defining voids inside the metal porous body, the openings and the voids communicating with each other, a porosity being from 1 volume % to 55 volume %, a density being from 3 g/cm3 to 10 g/cm3.Type: ApplicationFiled: January 9, 2019Publication date: March 18, 2021Applicant: Sumitomo Electric Industries, Ltd.Inventors: Chihiro HIRAIWA, Masatoshi MAJIMA, Takahiro HIGASHINO, Naho MIZUHARA, Hiromasa TAWARAYAMA
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Publication number: 20210066728Abstract: A cell structure includes a cathode, an anode, and a solid electrolyte layer interposed between the cathode and the anode, the cathode being in the form of a sheet, the anode being in the form of a sheet, the solid electrolyte layer being in the form of a sheet, the solid electrolyte layer being disposed on the anode, the cathode being disposed on the solid electrolyte layer, the cathode having a resistance Rc, the anode and the solid electrolyte layer having a resistance Ra, the resistance Rc and the resistance Ra satisfying a relationship of Rc/Ra?0.3, the cathode including a first metal oxide having a perovskite crystal structure, the cathode having a thickness larger than 15 ?m and equal to or less than 30 ?m.Type: ApplicationFiled: February 15, 2019Publication date: March 4, 2021Applicant: Sumitomo Electric Industries, Ltd.Inventors: Chihiro HIRAIWA, Mitsuyasu OGAWA, Naho MIZUHARA, Hiromasa TAWARAYAMA, Takahiro HIGASHINO, Masatoshi MAJIMA
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Publication number: 20210057763Abstract: A fuel cell includes a cell structure, an oxidizing agent flow path, a fuel flow path, and an anode-side current collector. The cell structure includes a cathode, an anode, and a solid electrolyte layer disposed between the cathode and the anode. The oxidizing agent flow path is formed adjacent to the cathode and away from the solid electrolyte layer. The oxidizing agent flow path is a flow path for supplying a gas that contains an oxidizing agent to the cathode. The fuel flow path is formed adjacent to the anode and away from the solid electrolyte layer. The fuel flow path is a flow path for supplying a fuel gas that contains water vapor and a hydrocarbon to the anode. The anode-side current collector is disposed adjacent to the anode and away from the solid electrolyte layer. The anode-side current collector is in contact with the anode.Type: ApplicationFiled: April 25, 2019Publication date: February 25, 2021Applicant: Sumitomo Electric Industries, Ltd.Inventors: Chihiro HIRAIWA, Takahiro HIGASHINO, Masatoshi MAJIMA, Hiromasa TAWARAYAMA, Mitsuyasu OGAWA
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Publication number: 20210013534Abstract: An electrolyte layer-anode composite member includes an anode including a first metal oxide having a perovskite crystal structure, and a solid electrolyte layer including a second metal oxide having a perovskite crystal structure, the anode including at least one of nickel and a nickel compound, the anode having a sheet-like shape, the solid electrolyte layer having a sheet-like shape, the solid electrolyte layer being stacked on the anode, the anode having a thickness Ta of 850 ?m or more. The thickness Ta of the anode and a thickness Te of the solid electrolyte layer may satisfy a relation of 0.003?Te/Ta?0.036. The thickness Ta of the anode and a diameter Da of the anode may satisfy a relation of 55?Ta/Da?300.Type: ApplicationFiled: February 14, 2019Publication date: January 14, 2021Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Chihiro HIRAIWA, Naho MIZUHARA, Mitsuyasu OGAWA, Hiromasa TAWARAYAMA, Takahiro HIGASHINO, Masatoshi MAJIMA
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Publication number: 20210005913Abstract: Provided is an electrolyte layer-anode composite member for a fuel cell, the electrolyte layer-anode composite member including an anode and a solid electrolyte layer having ion conductivity, the anode being an aggregate of granules including a composite metal, the composite metal including a nickel element and an iron element, the granules including a plurality of pores, the composite metal accounting for 80% by mass or more of the anode, the anode having a bulk density of 75% or less of a real density of the composite metal. Also provided is a cell structure including the electrolyte layer-anode composite member for a fuel cell described above, and a cathode arranged on a side of the solid electrolyte layer.Type: ApplicationFiled: February 15, 2019Publication date: January 7, 2021Applicant: Sumitomo Electric Industries, Ltd.Inventors: Chihiro HIRAIWA, Masatoshi MAJIMA, Takahiro HIGASHINO, Naho MIZUHARA, Hiromasa TAWARAYAMA
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Publication number: 20210005916Abstract: A proton conductor contains a metal oxide that has a perovskite structure and that is represented by formula (1): AxB1-yMyO3-?, where an element A is at least one element selected from the group consisting of Ba, Ca, and Sr, an element B is at least one element selected from the group consisting of Ce and Zr, an element M is at least one element selected from the group consisting of Y, Yb, Er, Ho, Tm, Gd, In, and Sc, ? indicates an oxygen deficiency amount, and 0.95?x?1 and 0<y?0.5 are satisfied.Type: ApplicationFiled: November 16, 2018Publication date: January 7, 2021Applicants: Kyoto University, SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Takahiro HIGASHINO, Yohei NODA, Chihiro HIRAIWA, Naho MIZUHARA, Mitsuyasu OGAWA, Hiromasa TAWARAYAMA, Masatoshi MAJIMA, Tetsuya UDA, Donglin HAN, Takayuki ONISHI
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Publication number: 20200377973Abstract: A metal porous body having a three-dimensional network structure, includes: a framework forming the three-dimensional network structure; and a coating layer having fine pores and coating the framework, the three-dimensional network structure including a rib and a node connecting a plurality of ribs, the framework including an alkali-resistant first metal, the fine pores having an average fine pore diameter of 10 nm or more and 1 ?m or less, the coating layer including an alkali-resistant second metal and optionally including an alkali-soluble metal, the alkali-soluble metal being contained at a proportion of 0% by mass or more and 30% by mass or less with reference to a total mass of the framework and the coating layer.Type: ApplicationFiled: December 6, 2018Publication date: December 3, 2020Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITYInventors: Kazuki OKUNO, Takahiro HIGASHINO, Hiromasa TAWARAYAMA, Masatoshi MAJIMA, Haruki MASUMURA, Yoshiyuki KURODA, Shigenori MITSUSHIMA
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Patent number: 10847814Abstract: Provided is a solid oxide fuel cell including a flat-plate-shaped cell structure including a cathode, an anode, and an electrolyte layer containing a solid oxide, a frame-shaped sealing member disposed so as to surround a periphery of the cathode, the sealing member having a larger outside diameter than the cathode, a first pressing member and a second pressing member that hold the sealing member therebetween, and a flat-plate-shaped cathode current collector adjacent to the cathode, the flat-plate-shaped cathode current collector being formed of a porous metal body having a three-dimensional mesh-like skeleton, in which the cathode current collector has a peripheral portion that is not opposite the anode, the outer edge portion of a main surface of the sealing member adjacent to the anode faces the first pressing member, the inner edge portion of the main surface of the sealing member adjacent to the anode faces the peripheral portion of the electrolyte layer, the outer edge portion of a main surface of theType: GrantFiled: January 23, 2017Date of Patent: November 24, 2020Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Chihiro Hiraiwa, Masatoshi Majima, Takahiro Higashino, Hiromasa Tawarayama, Kazunari Miyamoto
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Patent number: 10847809Abstract: A solid-oxide-electrolysis-cell-type hydrogen production apparatus includes a cell structure including a first electrode, a second electrode, and an electrolyte layer, a gas diffusion layer disposed adjacent to the first electrode, and a gas channel plate disposed adjacent to the gas diffusion layer, in which the gas diffusion layer is formed of a porous metal body having a three-dimensional mesh-like skeleton, the gas channel plate includes a first region including a first channel, a second region including a second channel, and a third region including a third channel, the first channel includes a slit extending from the center of the gas channel plate toward its outer edge at the boundary surface between the first region and the second region, letting the total area of the first channel at the boundary surface be a first opening area S1, letting the total area of the second channel at the boundary surface between the second region and the third region be a second opening area S2, and letting the total areaType: GrantFiled: May 7, 2020Date of Patent: November 24, 2020Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Chihiro Hiraiwa, Takahiro Higashino, Hiromasa Tawarayama, Masatoshi Majima, Toshihiro Yoshida, Kazunari Miyamoto