Patents by Inventor Yoshitake Toda

Yoshitake Toda 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: 11267720
    Abstract: Provided is a manufacturing method with which it is possible to convert a mayenite-type compound to an electride, wherein a reducing agent is not required, reaction conditions include a temperature that is lower than that in the related art, and the reaction is performed more quickly in a simple manner, and, additionally, by requiring a lower amount of energy. Provided is a method for manufacturing an electride of mayenite-type compounds, the method being characterized in that a mayenite-type compound is converted to an electride by making a current directly flow through the mayenite-type compound by applying a voltage to the mayenite-type compound in a heating state.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: March 8, 2022
    Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo Hosono, Toshiharu Yokoyama, Yoshitake Toda, Shintaro Ishiyama
  • Publication number: 20220037605
    Abstract: An assembly of nanoparticles includes metal oxide, the nanoparticles including zinc (Zn) and silicon (Si). In addition, the nanoparticles have an atomic ratio of Zn/(Zn+Si) in a range of 0.3 to 0.95. Further, the nanoparticles have an equivalent circular particle diameter in a range of 1 nm to 20 nm.
    Type: Application
    Filed: October 21, 2021
    Publication date: February 3, 2022
    Applicant: AGC Inc.
    Inventors: Satoru WATANABE, Yoshitake TODA, Kunio MASUMO, Nao ISHIBASHI, Nobuhiro NAKAMURA, Shimpei MORITA, Hikaru KOBAYASHI
  • Publication number: 20210343961
    Abstract: A thin film of metal oxide includes zinc (Zn); tin (Sn); silicon (Si); and oxygen (O). In terms of oxide, based on 100 mol % of total of oxides of the thin film, SnO2 is greater than 15 mol % but less than or equal to 95 mol %.
    Type: Application
    Filed: January 19, 2021
    Publication date: November 4, 2021
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo HOSONO, Yoshitake TODA, Satoru WATANABE, Toshinari WATANABE, Kazuhiro ITO, Naomichi MIYAKAWA, Nobuhiro NAKAMURA
  • Publication number: 20210284544
    Abstract: Provided is a manufacturing method with which it is possible to convert a mayenite-type compound to an electride, wherein a reducing agent is not required, reaction conditions include a temperature that is lower than that in the related art, and the reaction is performed more quickly in a simple manner, and, additionally, by requiring a lower amount of energy. Provided is a method for manufacturing an electride of mayenite-type compounds, the method being characterized in that a mayenite-type compound is converted to an electride by making a current directly flow through the mayenite-type compound by applying a voltage to the mayenite-type compound in a heating state.
    Type: Application
    Filed: July 25, 2017
    Publication date: September 16, 2021
    Inventors: Hideo HOSONO, Toshiharu YOKOYAMA, Yoshitake TODA, Shintaro ISHIYAMA
  • Patent number: 11094909
    Abstract: A thin film of amorphous metal oxide includes zinc (Zn), silicon (Si) and oxygen (O), the atomic ratio of Zn/(Zn+Si) being 0.30 to 0.95.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: August 17, 2021
    Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo Hosono, Yoshitake Toda, Toshinari Watanabe, Naomichi Miyakawa, Kazuhiro Ito, Satoru Watanabe, Akira Mitsui, Kazuto Ohkoshi
  • Publication number: 20210025063
    Abstract: An electrolytic cell capable of simply electrolyzing carbon dioxide into carbon monoxide and oxygen with low activation energy, and an electrolytic device. The carbon dioxide electrolytic cell includes a cathode, an anode, and a solid electrolyte having oxide ion conductivity. The cathode is the following (A) or (B); (A) a metal and a first mayenite-type compound are included therein or (B) a metal and a second mayenite-type compound are included therein, said second mayenite type compound including a mayenite type compound having electron conductivity.
    Type: Application
    Filed: March 28, 2019
    Publication date: January 28, 2021
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo HOSONO, Toshiharu YOKOYAMA, Yoshitake TODA, Shintaro ISHIYAMA, Masami TAGUCHI, Hiroki TAKAHASHI
  • Patent number: 10792645
    Abstract: An electride, which is more stable and can be more easily obtained, is provided or is made available, and as a result, a catalyst particularly useful for chemical synthesis, in which the electride is particularly used, is provided. A transition metal-supporting intermetallic compound having a transition metal supported on an intermetallic compound represented by the following formula (1): A5X3 . . . (1) wherein A represents a rare earth element, and X represents Si or Ge.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: October 6, 2020
    Assignees: JAPAN SCIENCE AND TECHNOLOGY AGENCY, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Hideo Hosono, Masaaki Kitano, Tomofumi Tada, Toshiharu Yokoyama, Yoshitake Toda, Yangfan Lu, Jiang Li
  • Patent number: 10446783
    Abstract: A light-emitting device includes a pair of first electrodes arranged separated from and opposing each other on a first surface of a substrate; a light-emitting layer arranged on at least one of the first electrodes; a second electrode arranged on the light-emitting layer; and a bridge layer connecting the first electrodes. The bridge layer is formed of a material having a resistance that falls within a range of 100 k? to 100 M?.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: October 15, 2019
    Assignees: JAPAN SCIENCE AND TECHNOLOGY AGENCY, TOKYO INSTITUTE OF TECHNOLOGY, Asahi Glass Company, Limited
    Inventors: Hideo Hosono, Yoshitake Toda, Nobuhiro Nakamura, Naomichi Miyakawa, Satoru Watanabe, Toshinari Watanabe
  • Publication number: 20190172605
    Abstract: Disclosed herein is an amorphous C12A7 electride thin film which has an electron density of greater than or equal to 2.0×1018 cm?3 and less than or equal to 2.3×1021 cm?3, and exhibits a light absorption at a photon energy position of 4.6 eV. Also disclosed herein is an amorphous thin film which is fabricated using a target made of a crystalline C12A7 electride, and containing an electride of an amorphous solid material includig calcium, aluminum, and oxygen, in which an Al/Ca molar ratio of the thin film is 0.5 to 4.7.
    Type: Application
    Filed: February 7, 2019
    Publication date: June 6, 2019
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo HOSONO, Yoshitake TODA, Katsuro HAYASHI, Setsuro ITO, Satoru WATANABE, Naomichi MIYAKAWA, Toshinari WATANABE, Kazuhiro ITO
  • Patent number: 10249402
    Abstract: A C12A7 electride thin film fabrication method includes a step of forming an amorphous C12A7 electride thin film on a substrate by vapor deposition under an atmosphere with an oxygen partial pressure of less than 0.1 Pa using a target made of a crystalline C12A7 electride having an electron density within a range of 2.0×1018 cm?3 to 2.3×1021 cm?3.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: April 2, 2019
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, AGC Inc., JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo Hosono, Yoshitake Toda, Katsuro Hayashi, Setsuro Ito, Satoru Watanabe, Naomichi Miyakawa, Toshinari Watanabe, Kazuhiro Ito
  • Publication number: 20190058142
    Abstract: A thin film of metal oxide includes zinc (Zn); tin (Sn); silicon (Si); and oxygen (O). In terms of oxide, based on 100 mol % of total of oxides of the thin film, SnO2 is greater than 15 mol % but less than or equal to 95 mol %.
    Type: Application
    Filed: October 24, 2018
    Publication date: February 21, 2019
    Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, TOKYO INSTITUTE OF TECHNOLOGY, AGC Inc.
    Inventors: Hideo HOSONO, Yoshitake TODA, Satoru WATANABE, Toshinari WATANABE, Kazuhiro ITO, Naomichi MIYAKAWA, Nobuhiro NAKAMURA
  • Patent number: 10124319
    Abstract: If a conductive mayenite compound having a large specific surface area is obtained, the usefulness thereof in respective applications is remarkably increased. A conductive mayenite compound powder having a conduction electron density of 1015 cm?3 or more and a specific surface area of 5 m2g?1 or more is produced by: the following steps: (1) forming a precursor powder by subjecting a mixture of a starting material powder and water to a hydrothermal treatment; (2) forming a mayenite compound powder by heating and dehydrating the precursor powder; (3) forming an activated mayenite compound powder by heating the compound powder in an inert gas atmosphere or in a vacuum; and (4) injecting electrons into the mayenite compound through a reduction treatment by mixing the activated mayenite compound powder with a reducing agent.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: November 13, 2018
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo Hosono, Michikazu Hara, Yasunori Inoue, Masaaki Kitano, Fumitaka Hayashi, Toshiharu Yokoyama, Satoru Matsuishi, Yoshitake Toda
  • Publication number: 20180304237
    Abstract: An electride, which is more stable and can be more easily obtained, is provided or is made available, and as a result, a catalyst particularly useful for chemical synthesis, in which the electride is particularly used, is provided. A transition metal-supported intermetallic compound having a transition metal supported on an intermetallic compound represented by the following formula (1): A5X3??(1) wherein A represents a rare earth element, and X represents Si or Ge.
    Type: Application
    Filed: December 22, 2016
    Publication date: October 25, 2018
    Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Hideo HOSONO, Masaaki KITANO, Tomofumi TADA, Toshiharu YOKOYAMA, Yoshitake TODA, Yangfan LU, Jiang LI
  • Patent number: 9981845
    Abstract: A metal-supporting catalyst for decomposing ammonia into hydrogen and nitrogen. The catalyst shows a high performance with a low cost and being advantageous from the viewpoint of resources, and an efficient method for producing hydrogen using the catalyst. The catalyst catalytically decomposes ammonia gas to generate hydrogen. The hydrogen generation catalyst includes, as a support, a mayenite type compound having oxygen ions enclosed therein or a mayenite type compound having 1015 cm?3 or more of conduction electrons or hydrogen anions enclosed therein, and metal grains for decomposing ammonia are supported on the surface of the support. Hydrogen is produced by continuously supplying 0.1-100 vol % of ammonia gas to a catalyst layer that comprises the aforesaid catalyst, and reacting the same at a reaction pressure of 0.01-1.0 MPa, at a reaction temperature of 300-800° C. and at a weight hourly space velocity (WHSV) of 500/mlg?1h?1 or higher.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: May 29, 2018
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo Hosono, Fumitaka Hayashi, Toshiharu Yokoyama, Yoshitake Toda, Michikazu Hara, Masaaki Kitano
  • Publication number: 20170186984
    Abstract: A thin film of metal oxide includes zinc (Zn); tin (Sn); silicon (Si); and oxygen (O). In terms of oxide, based on 100 mol % of total of oxides of the thin film, SnO2 is greater than 15 mol % but less than or equal to 95 mol %.
    Type: Application
    Filed: March 16, 2017
    Publication date: June 29, 2017
    Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, TOKYO INSTITUTE OF TECHNOLOGY, Asahi Glass Company, Limited
    Inventors: Hideo HOSONO, Yoshitake TODA, Satoru WATANABE, Toshinari WATANABE, Kazuhiro ITO, Naomichi MIYAKAWA, Nobuhiro NAKAMURA
  • Publication number: 20170186989
    Abstract: A light-emitting device includes a pair of first electrodes arranged separated from and opposing each other on a first surface of a substrate; a light-emitting layer arranged on at least one of the first electrodes; a second electrode arranged on the light-emitting layer; and a bridge layer connecting the first electrodes. The bridge layer is formed of a material having a resistance that falls within a range of 100 k? to 100 M?.
    Type: Application
    Filed: March 16, 2017
    Publication date: June 29, 2017
    Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, TOKYO INSTITUTE OF TECHNOLOGY, Asahi Glass Company, Limited
    Inventors: Hideo HOSONO, Yoshitake TODA, Nobuhiro NAKAMURA, Naomichi MIYAKAWA, Satoru WATANABE, Toshinari WATANABE
  • Publication number: 20170095793
    Abstract: If a conductive mayenite compound having a large specific surface area is obtained, the usefulness thereof in respective applications is remarkably increased. A conductive mayenite compound powder having a conduction electron density of 1015 cm?3 or more and a specific surface area of 5 m2g?1 or more is produced by: the following steps: (1) forming a precursor powder by subjecting a mixture of a starting material powder and water to a hydrothermal treatment; (2) forming a mayenite compound powder by heating and dehydrating the precursor powder; (3) forming an activated mayenite compound powder by heating the compound powder in an inert gas atmosphere or in a vacuum; and (4) injecting electrons into the mayenite compound through a reduction treatment by mixing the activated mayenite compound powder with a reducing agent.
    Type: Application
    Filed: December 19, 2016
    Publication date: April 6, 2017
    Applicants: TOKYO INSTITTUE OF TECHNOLOGY, JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo Hosono, Michikazu Hara, Yasunori Inoue, Masaaki Kitano, Fumitaka Hayashi, Toshiharu Yokoyama, Satoru Matsuishi, Yoshitake Toda
  • Patent number: 9605357
    Abstract: A method for depositing a magnesium oxide thin film on a substrate by a laser abrasion method using a sintered body or single crystal of magnesium oxide as a target. In this method, a flat processed film made of magnesium oxide having a (111) plane as its front surface is prepared, using a substrate made of strontium titanate having a (111) plane as its principal surface or yttria-stabilized zirconia having a (111) plane as its principal surface, by directly depositing a film on the principal surface of the substrate and epitaxially growing the film.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: March 28, 2017
    Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Tomofumi Susaki, Hideo Hosono, Tadahiro Fujihashi, Yoshitake Toda
  • Patent number: 9573822
    Abstract: If a conductive mayenite compound having a large specific surface area is obtained, the usefulness thereof in respective applications is remarkably increased. A conductive mayenite compound powder having a conduction electron density of 1015 cm?3 or more and a specific surface area of 5 m2g?1 or more is produced by: (1) a step for forming a precursor powder by subjecting a mixture of a starting material powder and water to a hydrothermal treatment; (2) a step for forming a mayenite compound powder by heating and dehydrating the precursor powder; (3) a step for forming an activated mayenite compound powder by heating the compound powder in an inert gas atmosphere or in a vacuum; and (4) a step for injecting electrons into the mayenite compound through a reduction treatment by mixing the activated mayenite compound powder with a reducing agent.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: February 21, 2017
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo Hosono, Michikazu Hara, Yasunori Inoue, Masaaki Kitano, Fumitaka Hayashi, Toshiharu Yokoyama, Satoru Matsuishi, Yoshitake Toda
  • Publication number: 20160340182
    Abstract: A metal-supporting catalyst for decomposing ammonia into hydrogen and nitrogen. The catalyst shows a high performance with a low cost and being advantageous from the viewpoint of resources, and an efficient method for producing hydrogen using the catalyst. The catalyst catalytically decomposes ammonia gas to generate hydrogen. The hydrogen generation catalyst includes, as a support, a mayenite type compound having oxygen ions enclosed therein or a mayenite type compound having 1015 cm?3 or more of conduction electrons or hydrogen anions enclosed therein, and metal grains for decomposing ammonia are supported on the surface of the support. Hydrogen is produced by continuously supplying 0.1-100 vol % of ammonia gas to a catalyst layer that comprises the aforesaid catalyst, and reacting the same at a reaction pressure of 0.01-1.0 MPa, at a reaction temperature of 300-800° C. and at a weight hourly space velocity (WHSV) of 500/mlg?1h?1 or higher.
    Type: Application
    Filed: July 15, 2016
    Publication date: November 24, 2016
    Applicant: TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Hideo Hosono, Fumitaka Hayashi, Toshiharu Yokoyama, Yoshitake Toda, Michikazu Hara, Masaaki Kitano