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).

  • 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: 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: 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: 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: 20190252682
    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: Application
    Filed: April 23, 2019
    Publication date: August 15, 2019
    Applicant: NGK INSULATORS, LTD.
    Inventors: Yukihisa TAKEUCHI, Iwao Ohwada, Yukinobu Yura
  • 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
  • Publication number: 20190214666
    Abstract: The 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 hydroxide ion conductivity. The inorganic solid electrolyte enables 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: Application
    Filed: March 12, 2019
    Publication date: July 11, 2019
    Inventors: Yukihisa TAKEUCHI, Hirofumi KAN, Toshiyuki NAKAMURA, Makoto OHMORI
  • Publication number: 20190207237
    Abstract: The 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 hydroxide ion conductivity. The inorganic solid electrolyte enables 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: Application
    Filed: March 7, 2019
    Publication date: July 4, 2019
    Inventors: Yukihisa TAKEUCHI, Hirofumi KAN, Toshiyuki NAKAMURA, Makoto OHMORI
  • Publication number: 20190201247
    Abstract: A device for manufacturing an absorbent body includes: a shaping unit that includes a recessed portion and that makes liquid absorbent fiber and superabsorbent polymer to be deposited in the recessed portion, shaping the absorbent body; and a supply unit that supplies the liquid absorbent fiber and the superabsorbent polymer to the recessed portion. The recessed portion includes a protruding portion, and the protruding portion protrudes from a bottom surface and includes an inclined surface. In a cross section orthogonal to a ridge line of the protruding portion, an angle of the inclined surface with respect to a surface parallel to the bottom surface is greater than an angle of repose of the superabsorbent polymer and smaller than 90 degrees.
    Type: Application
    Filed: August 31, 2016
    Publication date: July 4, 2019
    Inventors: Atsushi TSUKUDA, Yukihisa AKANO, Kenji TAKEUCHI
  • Publication number: 20190207239
    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: Application
    Filed: March 11, 2019
    Publication date: July 4, 2019
    Inventors: Yukihisa TAKEUCHI, Hirofumi KAN, Toshiyuki NAKAMURA, Makoto OHMORI
  • Patent number: 10063034
    Abstract: An external resonator type light emitting system includes a light source oscillating a semiconductor laser light by itself and a grating device providing an external resonator with the light source. The system performs oscillation in single mode. The light source includes an active layer oscillating the semiconductor laser light. The grating device includes an optical waveguide having an incident face to which the semiconductor laser is incident and an emitting face of emitting an emitting light of a desired wavelength, a Bragg grating formed in the optical waveguide, and a propagating portion provided between the incident face and the Bragg grating. Formulas (1) to (5) are satisfied.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: August 28, 2018
    Assignee: NGK INSULATORS, LTD.
    Inventors: Jungo Kondo, Shoichiro Yamaguchi, Takashi Yoshino, Yukihisa Takeuchi
  • Patent number: 9933569
    Abstract: An evanescent light generation element for oscillating evanescent light from an optical waveguide to a clad layer, including a 0.1 ?m-10 ?m thin layer composed of a ferroelectric single crystal or oriented crystal having first and second principal surfaces, and incident side end and exit side end surfaces. A ridge optical waveguide is formed in the thin layer and extends between the incident and exit side end surfaces of the thin layer. At least a pair of grooves is formed on both sides of the ridge optical waveguide in the thin layer and opened at the first principal surface of the thin layer. A clad layer is provided on the first principal surface or the second principal surface. A width of the ridge optical waveguide at the exit side end surface is less than a width of the ridge optical waveguide at the incident side end surface.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: April 3, 2018
    Assignee: NGK Insulators, Ltd.
    Inventors: Jungo Kondo, Shoichiro Yamaguchi, Takashi Yoshino, Yukihisa Takeuchi
  • Patent number: 9915794
    Abstract: An optical device includes a semiconductor laser light source, a grating element and an optical transmission element. The grating element includes a ridge-type optical waveguide having an incident surface to which a semiconductor laser light is incident and an emitting surface from which an outgoing light having a desired wavelength is emitted, and a Bragg grating formed in the ridge-type optical waveguide. The light transmission element includes an optical transmission part having an incident surface to which the outgoing light from the ridge-type optical waveguide is incident. A near-field diameter in a horizontal direction at the incident surface of the optical transmission part is greater than a near-field diameter in the horizontal direction at the emitting surface of said ridge-type optical waveguide.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: March 13, 2018
    Assignee: NGK Insulators, Ltd.
    Inventors: Jungo Kondo, Shoichiro Yamaguchi, Yukihisa Takeuchi
  • Patent number: 9893234
    Abstract: Provided is a light emitting device composite substrate suitable for manufacturing large-area light emitting devices at low cost. The light emitting device composite substrate comprises a substrate composed of an oriented polycrystalline alumina sintered body, and a light emitting functional layer formed on the substrate and having two or more layers composed of semiconductor single crystal grains, wherein each of the two or more layers has a single crystal structure in a direction approximately normal to the substrate.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: February 13, 2018
    Assignee: NGK Insulators, Ltd.
    Inventors: Morimichi Watanabe, Jun Yoshikawa, Tsutomu Nanataki, Katsuhiro Imai, Tomohiko Sugiyama, Takashi Yoshino, Yukihisa Takeuchi, Kei Sato
  • Publication number: 20170299822
    Abstract: An optical device includes a semiconductor laser light source, a grating element and an optical transmission element. The grating element includes a ridge-type optical waveguide having an incident surface to which a semiconductor laser light is incident and an emitting surface from which an outgoing light having a desired wavelength is emitted, and a Bragg grating formed in the ridge-type optical waveguide. The light transmission element includes an optical transmission part having an incident surface to which the outgoing light from the ridge-type optical waveguide is incident. A near-field diameter in a horizontal direction at the incident surface of the optical transmission part is greater than a near-field diameter in the horizontal direction at the emitting surface of said ridge-type optical waveguide.
    Type: Application
    Filed: December 12, 2016
    Publication date: October 19, 2017
    Applicant: NGK INSULATORS, LTD.
    Inventors: Jungo KONDO, Shoichiro YAMAGUCHI, Yukihisa TAKEUCHI