Patents by Inventor Kiyoshi Kumagae
Kiyoshi Kumagae 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: 11764395Abstract: An all-solid-state battery that includes a power storage part having a positive electrode layer, a negative electrode layer, and an electrolyte layer interposed between the positive electrode layer and the negative electrode layer; an internal electrode at an end surface of the power storage part; an electrode extraction part electrically connected to the internal electrode; a buffer layer covering the power storage part, the internal electrode, and a first part of the electrode extraction part; a barrier layer covering the buffer layer; and an impact-resistant layer covering the barrier layer such that a second part of the electrode extraction part extends from the impact-resistant layer.Type: GrantFiled: July 9, 2020Date of Patent: September 19, 2023Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Tomohiro Kato, Hiroe Ishihara, Kiyoshi Kumagae, Keisuke Shimizu
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Publication number: 20220328868Abstract: A solid-state battery that includes: a solid-state battery laminate including at least one battery constituent unit including: a positive electrode layer, the positive electrode layer containing a conductive carbon material; a positive electrode current collecting portion arranged at an end surface of the positive electrode layer; a negative electrode layer; and a solid-state electrolyte layer interposed between the positive electrode layer and the negative electrode layer in a stacking direction thereof; a positive electrode terminal electrically connected to the positive electrode current collecting portion; and a negative electrode terminal electrically connected to the negative electrode layer.Type: ApplicationFiled: June 16, 2022Publication date: October 13, 2022Inventors: Nobuyuki IWANE, Koichi NAKANO, Yusuke FUNADA, Katsunori TAKAHARA, Kiyoshi KUMAGAE, Keisuke SHIMIZU
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Publication number: 20220320590Abstract: A solid state battery including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer, wherein the positive electrode layer includes a positive electrode active material in which a spacing d003 of a lattice plane (003) is 4.800 ? or more in a charged state at a positive electrode potential of 4.55 V.Type: ApplicationFiled: June 24, 2022Publication date: October 6, 2022Applicant: Murata Manufacturing Co., Ltd.Inventors: Nobuyuki IWANE, Noriyuki AOKI, Katsunori TAKAHARA, Yusuke FUNADA, Kiyoshi KUMAGAE, Keisuke SHIMIZU
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Publication number: 20220302506Abstract: A solid-state battery including a solid-state battery laminate in which a positive electrode layer, a negative electrode layer, and a solid electrolyte layer are laminated with the solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer, and positive and negative external terminals are on side surfaces of the solid-state battery laminate. The positive electrode layer and the negative electrode layer each include an active material portion containing an active material , and a current collector portion having a relatively small active material density with respect to the active material portion and arranged on an edge surface of the active material portion so as to form an edge surface current collecting structure in which a current can be collected using the current collector portion on the edge surface of the active material portion.Type: ApplicationFiled: June 3, 2022Publication date: September 22, 2022Inventors: Koichi NAKANO, Kiyoshi KUMAGAE, Nobuyuki IWANE
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Patent number: 11394027Abstract: Provided is a magnesium secondary battery including a positive electrode member 23 including at least a positive electrode active material layer 23B, a separator 24 disposed facing the positive electrode member 23, a negative electrode member 25 containing magnesium or a magnesium compound disposed facing the separator 24, and an electrolytic solution containing a magnesium salt. The positive electrode active material layer 23B includes magnesium sulfide having a zinc blende type crystal structure.Type: GrantFiled: December 19, 2019Date of Patent: July 19, 2022Assignee: Murata Manufacturing Co., Ltd.Inventors: Kazuhiro Kamiguchi, Ryuhei Matsumoto, Kiyoshi Kumagae, Shizuka Hosoi, Yuri Nakayama
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Publication number: 20220069347Abstract: A solid-state battery including a solid-state battery laminated body including a positive electrode layer, a negative electrode layer, and a solid electrolyte interposed between the positive electrode layer and the negative electrode layer; a positive electrode terminal on a first side surface of the solid-state battery laminated body; and a negative electrode terminal on a second side surface of the solid-state battery laminated body, the second side surface facing the first side surface. In such a solid-state battery, in at least one electrode layer of the positive electrode layer and the negative electrode layer, a terminal contact end portion containing an electrode active material is in direct contact with the respective positive or negative electrode terminal, and a thickness of a non-terminal contact end portion in the electrode layer is smaller than a thickness of a central portion of the electrode layer.Type: ApplicationFiled: November 9, 2021Publication date: March 3, 2022Inventors: Yusuke Funada, Keisuke Shimizu, Kiyoshi Kumagae, Koichi Nakano, Nobuyuki Iwane, Sumito Shiina, Katsunori Takahara
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Publication number: 20220013873Abstract: A solid-state battery that includes a solid-state battery laminate having at least one battery constituent unit in a lamination direction, the battery constituent unit including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer; a positive electrode terminal on a surface of the solid-state battery laminate; and a negative electrode terminal on the surface of the solid-state battery laminate. In addition, the negative electrode layer includes a negative electrode active material configured to be charged and discharged at a potential of ?2 V or less with respect to a standard electrode potential, and the negative electrode terminal includes a terminal material that does not react with lithium ions at a potential of ?3 V to ?2 V with respect to the standard electrode potential.Type: ApplicationFiled: September 24, 2021Publication date: January 13, 2022Inventors: Kiyoshi Kumagae, Takuya Matsuyama, Keisuke Shimizu
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Publication number: 20210384550Abstract: A solid state battery that includes at least one battery constituent unit including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed therebetween; a positive electrode external terminal on a first side surface of the solid state battery laminate; and a negative electrode external terminal on a second side surface of the solid state battery laminate. The positive electrode layer and the negative electrode layer each include a terminal contact portion in direct contact with the positive electrode external terminal and the negative electrode external terminal, respectively, and a non-terminal contact portion that is not in direct contact with the positive electrode external terminal and the negative electrode external terminal, respectively, and in at least one of the positive electrode layer and the negative electrode layer, a sectional area of the terminal contact portion is smaller than a sectional area of the non-terminal contact portion.Type: ApplicationFiled: August 18, 2021Publication date: December 9, 2021Inventors: Kiyoshi Kumagae, Sumito Shiina, Koichi Nakano
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Patent number: 11121401Abstract: A method for producing a negative electrode for magnesium secondary batteries includes: providing a current collector having an underlying layer including a metal having a higher ionization tendency than magnesium, where the underlying layer is formed on a surface of the current collector; and forming a negative electrode active material layer including a magnesium layer on the current collector by a chemical plating method using the underlying layer as a base material.Type: GrantFiled: October 23, 2018Date of Patent: September 14, 2021Assignee: Murata Manufacturing Co., Ltd.Inventors: Kiyoshi Kumagae, Yuri Nakayama, Tadahiko Kubota
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Publication number: 20200350613Abstract: An all-solid-state battery that includes a power storage part having a positive electrode layer, a negative electrode layer, and an electrolyte layer interposed between the positive electrode layer and the negative electrode layer; an internal electrode at an end surface of the power storage part; an electrode extraction part electrically connected to the internal electrode; a buffer layer covering the power storage part, the internal electrode, and a first part of the electrode extraction part; a barrier layer covering the buffer layer; and an impact-resistant layer covering the barrier layer such that a second part of the electrode extraction part extends from the impact-resistant layer.Type: ApplicationFiled: July 9, 2020Publication date: November 5, 2020Inventors: Tomohiro Kato, Hiroe Ishihara, Kiyoshi Kumagae, Keisuke Shimizu
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Publication number: 20200176774Abstract: Provided is a magnesium secondary battery including a positive electrode member 23 including at least a positive electrode active material layer 23B, a separator 24 disposed facing the positive electrode member 23, a negative electrode member 25 containing magnesium or a magnesium compound disposed facing the separator 24, and an electrolytic solution containing a magnesium salt. The positive electrode active material layer 23B includes magnesium sulfide having a zinc blende type crystal structure.Type: ApplicationFiled: December 19, 2019Publication date: June 4, 2020Inventors: Kazuhiro KAMIGUCHI, Ryuhei MATSUMOTO, Kiyoshi KUMAGAE, Shizuka HOSOI, Yuri NAKAYAMA
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Publication number: 20190058209Abstract: A method for producing a negative electrode for magnesium secondary batteries includes: providing a current collector having an underlying layer including a metal having a higher ionization tendency than magnesium, where the underlying layer is formed on a surface of the current collector; and forming a negative electrode active material layer including a magnesium layer on the current collector by a chemical plating method using the underlying layer as a base material.Type: ApplicationFiled: October 23, 2018Publication date: February 21, 2019Inventors: Kiyoshi KUMAGAE, Yuri NAKAYAMA, Tadahiko KUBOTA
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Publication number: 20140130872Abstract: Provided is a photoelectric-conversion device, an electronic instrument, and a building which can suppress long-term performance degradation by suppressing dye desorption or dye aggregation. The photoelectric-conversion device includes a conductive electrode, a porous semiconductor layer, a counter layer, and an electrolyte layer, and the porous semiconductor layer contains a dye and a phosphorous compound such as a decylphosphonic acid. The molar ratio of the phosphorous compound to the dye is 0.5 or more.Type: ApplicationFiled: June 22, 2012Publication date: May 15, 2014Applicant: Sony CorporationInventors: Masaki Orihashi, Hiroko Miyashita, Kiyoshi Kumagae, Kenji Matsuda, Kotaro Satori
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Patent number: 8268498Abstract: A fuel cell with which deterioration of an anode electrode is able to be inhibited by an inexpensive means while generated carbon dioxide is removed, a fuel cell system including the same, and an electronic device including the same are provided. The fuel cell includes: a power generation section having an electrolyte between a cathode electrode and an anode electrode; an anode side platy member provided on the anode electrode side of the power generation section; a fuel vaporization chamber; a through hole that is formed in the anode platy member and gives passage between the anode electrode and the fuel vaporization chamber; a carbon dioxide exhaust section that guides carbon dioxide generated in the power generation section to each side face of the anode platy member or the fuel vaporization chamber; and a valve provided in the carbon dioxide exhaust section.Type: GrantFiled: March 19, 2010Date of Patent: September 18, 2012Assignee: Sony CorporationInventor: Kiyoshi Kumagae
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Publication number: 20120085396Abstract: A photoelectric conversion element has a structure in which an electrolyte layer composed of a porous film containing an electrolyte solution is provided between a porous photoelectrode and a counter electrode.Type: ApplicationFiled: October 3, 2011Publication date: April 12, 2012Applicant: Sony CorporationInventors: Ryohei Tsuda, Kiyoshi Kumagae
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Publication number: 20100248052Abstract: A fuel cell with which deterioration of an anode electrode is able to be inhibited by an inexpensive means while generated carbon dioxide is removed, a fuel cell system including the same, and an electronic device including the same are provided. The fuel cell includes: a power generation section having an electrolyte between a cathode electrode and an anode electrode; an anode side platy member provided on the anode electrode side of the power generation section; a fuel vaporization chamber; a through hole that is formed in the anode platy member and gives passage between the anode electrode and the fuel vaporization chamber; a carbon dioxide exhaust section that guides carbon dioxide generated in the power generation section to each side face of the anode platy member or the fuel vaporization chamber; and a valve provided in the carbon dioxide exhaust section.Type: ApplicationFiled: March 19, 2010Publication date: September 30, 2010Applicant: SONY CORPORATIONInventor: Kiyoshi KUMAGAE
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Publication number: 20040161673Abstract: An alkaline storage battery which includes a positive electrode, a negative electrode including a hydrogen absorbing alloy containing manganese as an active material, a separator and an alkaline electrolyte and contains a complex-forming agent which does not include nitrogen and which creates a complex with manganese.Type: ApplicationFiled: February 12, 2004Publication date: August 19, 2004Inventors: Katsuhiko Shinyama, Kiyoshi Kumagae, Tadayoshi Tanaka, Yoshifumi Magari, Hiroshi Nakamura, Toshiyuki Nohma