Patents by Inventor Yukihisa Takeuchi

Yukihisa Takeuchi 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).

  • Patent number: 11515570
    Abstract: Provided is a secondary battery including: a positive electrode plate composed of an inorganic material containing a positive electrode active material in an oxide form and having a thickness of 25 ?m or more; a negative electrode plate composed of an inorganic material containing a negative electrode active material in an oxide form and having a thickness of 25 ?m or more; and an inorganic solid electrolyte, the secondary battery being charged and discharged at a temperature of 100° C. or higher.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: November 29, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukihisa Takeuchi, Iwao Owada, Yukinobu Yura, Yosuke Sato, Toshihiro Yoshida, Yuji Katsuda
  • Publication number: 20220259108
    Abstract: A method and apparatus for producing AlN whiskers includes reduced incorporation of metal particles, an AlN whisker body, AlN whiskers, a resin molded body, and a method for producing the resin molded body. The method for producing AlN whiskers includes heating an Al-containing material in a material accommodation unit to thereby generate Al gas; and introducing the Al gas into a reaction chamber through a communication portion while introducing nitrogen gas into the reaction chamber through a gas inlet port, to thereby grow AlN whiskers on the surface of an Al2O3 substrate placed in the reaction chamber.
    Type: Application
    Filed: May 2, 2022
    Publication date: August 18, 2022
    Applicant: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Toru UJIHARA, Yukihisa TAKEUCHI, Daishi SHIOJIRI, Masaki MATSUMOTO, Hiroshi SAITO, Ikuo HAYASHI
  • Patent number: 11404683
    Abstract: There is provided an all-solid-state lithium battery including: a positive-electrode plate composed of a lithium complex oxide sintered body having a layered rock-salt structure; a solid electrolyte layer composed of a lithium-ion-conductive antiperovskite material; a negative-electrode plate containing Ti and permitting intercalation and deintercalation of lithium ions at 0.4 (vs. Li/Li+) V or more; a positive-electrode current collecting layer provided on a face, remote from the solid electrolyte layer, of the positive-electrode plate; a negative-electrode current collecting layer provided on a face, remote from the solid electrolyte layer, of the negative-electrode plate; a positive-electrode covering metal membrane provided at an interface between the positive-electrode plate and the solid electrolyte layer; and a negative-electrode covering metal membrane provided at an interface between the negative-electrode plate and the solid electrolyte layer.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: August 2, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Kei Tanaka, Miyuki Kojima, Keita Miyanishi, Yosuke Sato, Yuji Katsuda, Yukihisa Takeuchi
  • Patent number: 11387454
    Abstract: The present invention provides a secondary battery, including a positive electrode plate composed of an inorganic material including a positive electrode active material in an oxide form and having a thickness of 25 ?m or more; a negative electrode plate composed of an inorganic material including a negative electrode active material in an oxide form and having a thickness of 25 ?m or more; and an inorganic solid electrolyte layer, wherein the secondary battery is chargeable and dischargeable at a temperature of 100° C. or more. The present invention can provide rapid charge/discharge at a high cycle capacity retention and increase the capacity of the secondary battery.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: July 12, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukihisa Takeuchi, Iwao Ohwada, Yukinobu Yura
  • Patent number: 11345640
    Abstract: A method and apparatus for producing AlN whiskers includes reduced incorporation of metal particles, an AlN whisker body, AlN whiskers, a resin molded body, and a method for producing the resin molded body. The method for producing AlN whiskers includes heating an Al-containing material in a material accommodation unit to thereby generate Al gas; and introducing the Al gas into a reaction chamber through a communication portion while introducing nitrogen gas into the reaction chamber through a gas inlet port, to thereby grow AlN whiskers on the surface of an Al2O3 substrate placed in the reaction chamber.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: May 31, 2022
    Assignee: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Toru Ujihara, Yukihisa Takeuchi, Daishi Shiojiri, Masaki Matsumoto, Hiroshi Saito, Ikuo Hayashi
  • Patent number: 11158906
    Abstract: Provided is a layered double hydroxide (LDH) separator comprising a porous substrate made of a polymeric material; and a LDH with which pores of the porous substrate are plugged. A central region along the thickness of the LDH separator has a lower mean porosity than peripheral regions along the thickness of the LDH separator.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: October 26, 2021
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukihisa Takeuchi, Naohito Yamada, Sota Okochi, Shohei Yokoyama, Naoko Inukai
  • Patent number: 11145935
    Abstract: Provided is a layered double hydroxide (LDH) separator including a porous substrate made of a polymeric material; and a LDH with which pores of the porous substrate are plugged. The LDH separator has a mean porosity of 0.03% to less than 1.0%.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: October 12, 2021
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukihisa Takeuchi, Naohito Yamada, Sota Okochi, Shohei Yokoyama, Naoko Inukai
  • Patent number: 10957930
    Abstract: A solid alkaline fuel cell has a cathode that is supplied with an oxidant which contains oxygen, an anode that is supplied with a fuel which contains hydrogen atoms, and an inorganic solid electrolyte that is disposed between the anode and the cathode and that exhibits a hydroxide ion conductivity. The inorganic solid electrolyte enables the permeation of water of greater than or equal to 80 ?g/min·cm2 and less than or equal to 5400 ?g/min·cm2 per unit surface area of a cathode-side surface.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: March 23, 2021
    Inventors: Yukihisa Takeuchi, Hirofumi Kan, Toshiyuki Nakamura, Makoto Ohmori
  • Patent number: 10950858
    Abstract: Various useful IC-related applications are provided using all solid lithium secondary batteries. For example, there is provided a power source for integrated circuit (IC) that includes an all-solid-state lithium secondary battery including a positive electrode layer, a solid electrolyte layer, and a negative electrode layer, wherein the all-solid-state lithium secondary battery itself has a function as a bypass capacitor, thereby being capable of supplying a temporarily increased peak current in addition to a steady current.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: March 16, 2021
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukihisa Takeuchi, Iwao Ohwada
  • Publication number: 20210009885
    Abstract: A method for producing AlN crystals includes using at least one element, excluding Si, that satisfies a condition under which the element forms a compound with neither Al nor N or a condition under which the element forms a compound with any of Al and N provided that the standard free energy of formation of the compound is larger than that of AlN; melting a composition containing at least Al and the element; and reacting the Al vapor with nitrogen gas at a predetermined reaction temperature to produce AlN crystals.
    Type: Application
    Filed: May 28, 2020
    Publication date: January 14, 2021
    Inventors: Toru UJIHARA, Yukihisa TAKEUCHI, Mingyu CHEN, Masashi NAGAYA
  • Publication number: 20200313137
    Abstract: Provided is a layered double hydroxide (LDH) separator including a porous substrate made of a polymeric material, and LDH with which pores of the porous substrate are plugged. The LDH separator has a plurality of remaining flattened pores, longitudinal directions of the pores being non-parallel to a thickness direction of the LDH separator.
    Type: Application
    Filed: June 17, 2020
    Publication date: October 1, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Yukihisa TAKEUCHI, Naohito YAMADA, Sota OKOCHI, Shohei YOKOYAMA, Naoko INUKAI
  • Publication number: 20200313133
    Abstract: Provided is a layered double hydroxide (LDH) separator including a porous substrate made of a polymeric material; and a LDH with which pores of the porous substrate are plugged. The LDH separator has a mean porosity of 0.03% to less than 1.0%.
    Type: Application
    Filed: June 17, 2020
    Publication date: October 1, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Yukihisa TAKEUCHI, Naohito YAMADA, Sota OKOCHI, Shohei YOKOYAMA, Naoko INUKAI
  • Publication number: 20200313134
    Abstract: Provided is a layered double hydroxide (LDH) separator comprising a porous substrate made of a polymeric material; and a LDH with which pores of the porous substrate are plugged. A central region along the thickness of the LDH separator has a lower mean porosity than peripheral regions along the thickness of the LDH separator.
    Type: Application
    Filed: June 17, 2020
    Publication date: October 1, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Yukihisa TAKEUCHI, Naohito YAMADA, Sota OKOCHI, Shohei YOKOYAMA, Naoko INUKAI
  • Publication number: 20200280047
    Abstract: There is provided an all-solid-state lithium battery including: a positive-electrode plate composed of a lithium complex oxide sintered body having a layered rock-salt structure; a solid electrolyte layer composed of a lithium-ion-conductive antiperovskite material; a negative-electrode plate containing Ti and permitting intercalation and deintercalation of lithium ions at 0.4 (vs. Li/Li+) V or more; a positive-electrode current collecting layer provided on a face, remote from the solid electrolyte layer, of the positive-electrode plate; a negative-electrode current collecting layer provided on a face, remote from the solid electrolyte layer, of the negative-electrode plate; a positive-electrode covering metal membrane provided at an interface between the positive-electrode plate and the solid electrolyte layer; and a negative-electrode covering metal membrane provided at an interface between the negative-electrode plate and the solid electrolyte layer.
    Type: Application
    Filed: May 18, 2020
    Publication date: September 3, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Kei TANAKA, Miyuki KOJIMA, Keita MIYANISHI, Yosuke SATO, Yuji KATSUDA, Yukihisa TAKEUCHI
  • Publication number: 20200266494
    Abstract: Provided is a secondary battery including: a positive electrode plate composed of an inorganic material containing a positive electrode active material in an oxide form and having a thickness of 25 ?m or more; a negative electrode plate composed of an inorganic material containing a negative electrode active material in an oxide form and having a thickness of 25 ?m or more; and an inorganic solid electrolyte, the secondary battery being charged and discharged at a temperature of 100° C. or higher.
    Type: Application
    Filed: May 4, 2020
    Publication date: August 20, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Yukihisa TAKEUCHI, Iwao OWADA, Yukinobu YURA, Yosuke SATO, Toshihiro YOSHIDA, Yuji KATSUDA
  • Publication number: 20200259217
    Abstract: Provided is an all-solid lithium battery including: a low-angle oriented positive electrode plate that is a lithium complex oxide sintered plate having a porosity of 10 to 50%; a negative electrode plate containing Ti and capable of intercalating and deintercalating lithium ions at 0.4 V or higher (vs. Li/Li+); and a solid electrolyte having a melting point lower than the melting point or pyrolytic temperature of the oriented positive electrode plate or the negative electrode plate, wherein at least 30% of pores in the oriented positive electrode plate is filled with the solid electrolyte in an observation of a cross-section perpendicular to a main face of the oriented positive electrode plate.
    Type: Application
    Filed: May 1, 2020
    Publication date: August 13, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Yukinobu YURA, Yukihisa TAKEUCHI, Yosuke SATO, Toshihiro YOSHIDA, Yuji KATSUDA
  • Publication number: 20200095170
    Abstract: A method and apparatus for producing AlN whiskers includes reduced incorporation of metal particles, an AlN whisker body, AlN whiskers, a resin molded body, and a method for producing the resin molded body. The method for producing AlN whiskers includes heating an Al-containing material in a material accommodation unit to thereby generate Al gas; and introducing the Al gas into a reaction chamber through a communication portion while introducing nitrogen gas into the reaction chamber through a gas inlet port, to thereby grow AlN whiskers on the surface of an Al2O3 substrate placed in the reaction chamber.
    Type: Application
    Filed: March 16, 2018
    Publication date: March 26, 2020
    Applicant: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Toru UJIHARA, Yukihisa TAKEUCHI, Daishi SHIOJIRI, Masaki MATSUMOTO, Hiroshi SAITO, Ikuo HAYASHI
  • Patent number: 10593977
    Abstract: A solid alkaline fuel cell has a cathode that is supplied with an oxidant which contains oxygen, an anode that is supplied with a fuel which contains hydrogen atoms, and an inorganic solid electrolyte that is disposed between the anode and the cathode and that exhibits a hydroxide ion conductivity. The inorganic solid electrolyte enables the permeation of a fuel in an amount that produces carbon dioxide at the cathode of greater than or equal to 0.04 ?mol/s·cm2 and less than or equal to 2.5 ?mol/s·cm2 per unit surface area of a cathode-side surface.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: March 17, 2020
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukihisa Takeuchi, Hirofumi Kan, Toshiyuki Nakamura, Makoto Ohmori
  • Patent number: 10490836
    Abstract: A method of power generation for a solid alkaline fuel cell includes the step of exposing a cathode-side surface of the inorganic solid electrolyte to an atmosphere containing carbon dioxide of greater than or equal to 600 ppm and less than or equal to 20000 ppm.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: November 26, 2019
    Assignee: NGK INSULATORS, LTD.
    Inventors: Yukihisa Takeuchi, Hirofumi Kan, Toshiyuki Nakamura, Makoto Ohmori
  • Publication number: 20190252718
    Abstract: Various useful IC-related applications are provided using all solid lithium secondary batteries. For example, there is provided a power source for integrated circuit (IC) that includes an all-solid-state lithium secondary battery including a positive electrode layer, a solid electrolyte layer, and a negative electrode layer, wherein the all-solid-state lithium secondary battery itself has a function as a bypass capacitor, thereby being capable of supplying a temporarily increased peak current in addition to a steady current.
    Type: Application
    Filed: April 23, 2019
    Publication date: August 15, 2019
    Applicant: NGK INSULATORS, LTD.
    Inventors: Yukihisa TAKEUCHI, lwao OHWADA