Patents by Inventor Norihiro Yoshinaga

Norihiro Yoshinaga 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: 10483104
    Abstract: A method for producing a stacked electrode of an embodiment includes preparing a multi-layered graphene film, applying a dispersion liquid of metal nanowires onto the multi-layered graphene film, and removing a solvent from the dispersion liquid to prepare a metal wiring on the multi-layered graphene film.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: November 19, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Katsuyuki Naito, Eishi Tsutsumi, Norihiro Yoshinaga, Yoshihiro Akasaka
  • Patent number: 10443136
    Abstract: An electrochemical reaction device comprises: an electrolytic solution tank including a first region, a second region, and a path; a reduction electrode disposed in the first region; an oxidation electrode disposed in the second region; and a power source connected to the reduction electrode and oxidation electrode; and a plurality of ion exchange membranes separating the first region and the second region.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: October 15, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Akihiko Ono, Satoshi Mikoshiba, Jun Tamura, Norihiro Yoshinaga, Yoshitsune Sugano
  • Publication number: 20190296362
    Abstract: A catalyst of an embodiment includes a porous structure including aggregates of particles containing Ru and metal atoms M different from Ru. The particles are a metal oxide. A metal atom ratio of the metal atom M in a surface region of the porous structure is higher than that of the metal atom M in the porous structure as a whole.
    Type: Application
    Filed: September 12, 2018
    Publication date: September 26, 2019
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Wu MEI, Atsuko IIDA, Norihiro YOSHINAGA, Yoshihiko NAKANO
  • Publication number: 20190296380
    Abstract: A catalyst laminate includes a plurality of catalyst layers containing at least one of a noble metal and an oxide of the noble metal and at least one of a non-noble metal and an oxide of the non-noble metal, including: two or more first catalyst layers and two or more second catalyst layers. In an atomic percent of the noble metal obtained by using a line analysis by energy dispersive X-ray spectroscopy in a thickness direction of the catalyst laminate. The first catalyst layer is less than an average of a highest value and a lowest value of the atomic percent of the noble metal. The second catalyst layer has an atomic percent of the noble metal equal to or greater than the average of the highest value and the lowest value thereof. The second catalyst layer is present between the first catalyst layers.
    Type: Application
    Filed: March 5, 2019
    Publication date: September 26, 2019
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Atsuko IIDA, Norihiro Yoshinaga, Wu Mei, Yoshihiko Nakano
  • Publication number: 20190296364
    Abstract: A laminated electrolyte membrane of an embodiment includes: a first electrolyte membrane; a second electrolyte membrane; and a nanosheet laminated catalyst layer provided between the first electrolyte membrane and the second electrolyte membrane and including a laminated structure in which a plurality of nanosheet catalysts is laminated with a gap.
    Type: Application
    Filed: September 12, 2018
    Publication date: September 26, 2019
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiko NAKANO, Norihiro YOSHINAGA, Wu MEI, Taishi FUKAZAWA
  • Patent number: 10306752
    Abstract: According to one embodiment, a transparent conductor includes a transparent substrate; a metal nanowire layer disposed on the transparent substrate and including a plurality of metal nanowires; a graphene oxide layer covering the metal nanowire layer; and an electrical insulating resin layer disposed in contact with the graphene oxide layer.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: May 28, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsuyuki Naito, Norihiro Yoshinaga, Tianyi Yang, Yoshihiro Akasaka
  • Publication number: 20190085470
    Abstract: An electrochemical reaction device, comprises: an anode to oxidize a first substance; a first flow path facing on the anode and through which a liquid containing the first substance flows; a cathode to reduce a second substance; a second flow path facing on the cathode and through which a gas containing the second substance flows; a porous separator provided between the anode and the cathode; and a power supply connected to the anode and the cathode. A thickness of the porous separator is 1 ?m or more and 500 ?m or less. An average fine pore size of the porous separator is larger than 0.008 ?m and smaller than 0.45 ?m. A porosity of the porous separator is higher than 0.5.
    Type: Application
    Filed: March 8, 2018
    Publication date: March 21, 2019
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Akihiko ONO, Takuya HONGO, Masakazu YAMAGIWA, Yuki KUDO, Satoshi MIKOSHIBA, Norihiro YOSHINAGA, Yuta KANAI, Jun TAMURA
  • Publication number: 20190071784
    Abstract: A membrane electrode assembly includes a pair of electrodes, each having a feeder layer that is porous and made of a conductive material, and an electrolyte membrane disposed between the pair of electrodes. At least one of the electrodes has a catalyst layer disposed in the feeder layer. In a cross section of the feeder layer, an electrolyte exists in a first region less than or equal to 80% of a thickness of the feeder layer from the electrolyte membrane toward an opposite direction to the electrolyte membrane, the catalyst layer exists at 50% or more of an outer circumference of a cross section of the conductive material in the first region, and the catalyst layer exists at 10% or less of the outer circumference of the cross section of the conductive material in a second region other than the first region.
    Type: Application
    Filed: March 6, 2018
    Publication date: March 7, 2019
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Norihiro Yoshinaga, Atsuko Iida, Wu Mei, Yoshihiko Nakano
  • Patent number: 10214822
    Abstract: An electrode of an embodiment includes a base material, and a catalyst layer provided on the base material and having a porous structure. When a sum of heights of all peaks belonging to Ir oxide is I0, the height of a peak of IrO2 (110) is I1, and the height of a peak of IrO2 (211) is I2, a ratio of (I1+I2)/I0, which is a ratio of spectra obtained by X-ray diffraction measurements using K? rays of Cu in the catalyst layer, is 50% or more and 100% or less in a range of a diffraction angle of 20 degrees or more and 70 degrees or less.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: February 26, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Atsuko Iida, Norihiro Yoshinaga, Shigeru Matake, Wu Mei
  • Patent number: 10087421
    Abstract: The present invention provides a mammalian stem cell suspension containing mammalian stem cells and at least one polysaccharide such as trehalose, and the like; a mammalian stem cell aggregation inhibitor containing polysaccharide such as trehalose, and the like; a method of suppressing aggregation of mammalian stem cells, containing suspending the mammalian stem cells in an aqueous physiological solution containing polysaccharide; an inhibitor of a decrease in the survival rate of mammalian stem cells containing polysaccharide such as trehalose and the like; a method of suppressing a decrease in the survival rate of mammalian stem cells, containing suspending the mammalian stem cells in an aqueous physiological solution containing polysaccharides, and the like.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: October 2, 2018
    Assignees: OTSUKA PHARMACEUTICAL FACTORY, INC., JICHI MEDICAL UNIVERSITY
    Inventors: Eiji Kobayashi, Tamaki Wada, Yasutaka Fujita, Norihiro Yoshinaga, Masako Doi, Yasuhiro Fujimoto, Takumi Teratani
  • Publication number: 20180274110
    Abstract: A laminated electrolyte membrane of an embodiment includes: a hydrocarbon-based electrolyte membrane; and a composite electrolyte membrane laminated with the hydrocarbon-based electrolyte, the composite electrolyte membrane containing a perfluorosulfonic acid-based electrolyte and a superstrong acid metal oxide having an acid function (H0) of ?12 or less.
    Type: Application
    Filed: September 7, 2017
    Publication date: September 27, 2018
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiko NAKANO, Wu MEI, Norihiro YOSHINAGA, Atsuko IIDA
  • Publication number: 20180068755
    Abstract: According to one embodiment, a method of manufacturing a transparent conductor is provided. In the method, a silver nanowire layer including a plurality of silver nanowires and having openings is formed on a graphene film supported by a copper support. Then, a transparent resin layer insoluble in a copper-etching solution is formed on the silver nanowire layer such that the transparent resin layer contacts the graphene film through the openings. The copper support is then brought into contact with the non-acidic copper-etching solution to remove the copper support, thereby exposing the graphene film.
    Type: Application
    Filed: November 14, 2017
    Publication date: March 8, 2018
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Katsuyuki Naito, Yoshihiro Akasaka, Tianyi Yang, Norihiro Yoshinaga
  • Patent number: 9863047
    Abstract: An electrolysis device of an embodiment includes: an anode, a cathode having a nitrogen-containing carbon alloy catalyst, and an electrolysis cell having a membrane electrode assembly composed of an electrolyte present between the anode and the cathode so that voltage is applied to the anode and the cathode, wherein the electrolyte is any one of acidic, neutral, or alkali, water is produced by the electrolysis device at the cathode, when the electrolyte is acidic, and hydroxide ion is produced by the electrolysis device at the anode, when the electrolyte is neutral or alkali.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: January 9, 2018
    Assignee: Toshiba Lifestyle Products & Services Corporation
    Inventors: Norihiro Yoshinaga, Yoshihiko Nakano, Norihiro Tomimatsu, Yoshihiro Akasaka
  • Patent number: 9847150
    Abstract: According to one embodiment, a method of manufacturing a transparent conductor is provided. In the method, a silver nanowire layer including a plurality of silver nanowires and having openings is formed on a graphene film supported by a copper support. Then, a transparent resin layer insoluble in a copper-etching solution is formed on the silver nanowire layer such that the transparent resin layer contacts the graphene film through the openings. The copper support is then brought into contact with the non-acidic copper-etching solution to remove the copper support, thereby exposing the graphene film.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: December 19, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsuyuki Naito, Yoshihiro Akasaka, Tianyi Yang, Norihiro Yoshinaga
  • Publication number: 20170311441
    Abstract: According to one embodiment, a transparent conductor includes a transparent substrate; a metal nanowire layer disposed on the transparent substrate and including a plurality of metal nanowires; a graphene oxide layer covering the metal nanowire layer; and an electrical insulating resin layer disposed in contact with the graphene oxide layer.
    Type: Application
    Filed: July 11, 2017
    Publication date: October 26, 2017
    Inventors: Katsuyuki NAITO, Norihiro YOSHINAGA, Tianyi YANG, Yoshihiro AKASAKA
  • Patent number: 9793549
    Abstract: According to one embodiment, a catalyst-supporting substrate comprises a substrate and a catalyst layer including a plurality of pores, the catalyst layer being supported on the substrate. The average diameter of the section of the pore when the catalyst is cut in the thickness direction of the thickness is 5 nm to 400 nm, and the long-side to short-side ratio of the pore on the section is 1:1 to 10:1 in average.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: October 17, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Taishi Fukazawa, Wu Mei, Yoshihiro Akasaka, Norihiro Yoshinaga
  • Patent number: 9777382
    Abstract: According to one embodiment, an electrochemical cell includes an anode, a cathode and an electrolytic membrane interposed therebetween. At least one of the anode and the cathode is formed of an integral solid conductive plate and includes a first surface in contact with the electrolytic membrane and a second surface apart from the first surface in a thickness direction. The at least one of the anode and the cathode includes a plurality of first pores opened in the first surface and a plurality of second pores opened in the second surface, the second pores communicating with a part of the first pores. The first pores are smaller than the second pores, and the concentration of pores in the first surface is higher than that in the second surface.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: October 3, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norihiro Yoshinaga, Hiroaki Hirazawa, Yoshihiro Akasaka, Katsuyuki Naito, Taishi Fukazawa, Jun Tamura, Ryosuke Yagi
  • Patent number: 9763320
    Abstract: According to one embodiment, a transparent conductor includes a transparent substrate; a metal nanowire layer disposed on the transparent substrate and including a plurality of metal nanowires; a graphene oxide layer covering the metal nanowire layer; and an electrical insulating resin layer disposed in contact with the graphene oxide layer.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: September 12, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsuyuki Naito, Norihiro Yoshinaga, Tianyi Yang, Yoshihiro Akasaka
  • Publication number: 20170204526
    Abstract: An electrode of an embodiment includes a substrate, an intermediate layer provided on the substrate, and a catalyst layer provided on the intermediate layer. The intermediate layer is a mixture that includes two or more substances among a compound, and single element of noble metal or an alloy including noble metal. In a composition ratio of the mixture, a composition ratio of the intermediate layer in the vicinity of an interface between the substrate and the intermediate layer is different from a composition ratio of the intermediate layer in the vicinity of an interface between the catalyst layer and the intermediate layer.
    Type: Application
    Filed: September 8, 2016
    Publication date: July 20, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Norihiro Yoshinaga, Shigeru Matake, Wu Mei, Atsuko Iida
  • Publication number: 20170183788
    Abstract: An electrode of an embodiment includes a base material, and a catalyst layer provided on the base material and having a porous structure. When a sum of heights of all peaks belonging to Ir oxide is I0, the height of a peak of IrO2 (110) is T1, and the height of a peak of IrO2 (211) is I2, a ratio of (I1+I2)/I0, which is a ratio of spectra obtained by X-ray diffraction measurements using K? rays of Cu in the catalyst layer, is 50% or more and 100% or less in a range of a diffraction angle of 20 degrees or more and 70 degrees or less.
    Type: Application
    Filed: September 12, 2016
    Publication date: June 29, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Atsuko Iida, Norihiro Yoshinaga, Shigeru Matake, Wu Mei