Patents by Inventor Takeshi Komatsu

Takeshi Komatsu 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: 20230160081
    Abstract: A gas phase reduction apparatus of carbon dioxide includes an oxidation chamber that includes an oxidation electrode; a reduction chamber that is adjacent to the oxidation chamber and receives supplied carbon dioxide; and a porous electrode-supporting electrolyte membrane that is placed between the oxidation chamber and the reduction chamber. The porous electrode-supporting electrolyte membrane is a joined body including a porous reduction electrode joined to an electrolyte membrane. The electrolyte membrane is placed on the oxidation chamber side. The porous reduction electrode is placed on the reduction chamber side and configured to reduce the carbon dioxide by electrons from the oxidation electrode connected via a conductor.
    Type: Application
    Filed: May 21, 2020
    Publication date: May 25, 2023
    Inventors: Sayumi Sato, Yuya Uzumaki, Yoko Ono, Takeshi Komatsu
  • Publication number: 20230154690
    Abstract: A semiconductor photoelectrode that is to be located in an aqueous solution to cause a decomposition reaction of the aqueous solution upon being irradiated with light, the semiconductor photoelectrode including: a semiconductor layer that is formed on an insulative or conductive substrate and is provided with a plurality of protrusion structures that protrude in one direction that is opposite a direction in which the substrate is located; a catalyst layer that is continuously laminated on the surface of the semiconductor layer; and a wire that is electrically connected to the semiconductor layer.
    Type: Application
    Filed: May 19, 2020
    Publication date: May 18, 2023
    Inventors: Yoko Ono, Yuya Uzumaki, Sayumi Sato, Takeshi Komatsu
  • Patent number: 11642504
    Abstract: The sheet mask includes multiple battery parts arranged such that electric currents flow along mimic muscles or flows of lymph. This allows an active ingredient to penetrate into in-body tissues more effectively and also allows the mimic muscles and the lymphatic vessels to be electrically stimulated. Forming the battery parts by using materials with low environmental load allows easy disposal of the sheet mask in everyday life.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: May 9, 2023
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takeshi Komatsu, Masaya Nohara, Masahiko Hayashi, Yoko Ono, Shuhei Sakamoto, Yuya Uzumaki, Mikayo Iwata
  • Publication number: 20230135736
    Abstract: A gas-phase reduction device for carbon dioxide includes: an oxidation chamber containing an oxidation electrode; a reduction chamber to which carbon dioxide is supplied; a gas reduction sheet that has an ion exchange membrane and a reduction electrode laminated together therein and that is disposed between the oxidation chamber and the reduction chamber with the ion exchange membrane facing the oxidation chamber and the reduction electrode facing the reduction chamber; a conducting wire that connects the oxidation electrode and the reduction electrode; and a heat source that surrounds the reduction chamber.
    Type: Application
    Filed: May 11, 2020
    Publication date: May 4, 2023
    Inventors: Sayumi Sato, Yuya Uzumaki, Yoko Ono, Takeshi Komatsu
  • Publication number: 20230071583
    Abstract: A method for producing a spherical nanocarbon fiber assembly, including: freezing a dispersion liquid containing cellulose nanofibers by spraying the dispersion liquid on a brine solution to obtain a frozen product; drying the frozen product in a vacuum to obtain a dried product; and heating the dried product in an atmosphere that does not burn the dried product, thereby carbonizing the dried product to obtain a spherical nanocarbon fiber assembly.
    Type: Application
    Filed: January 20, 2020
    Publication date: March 9, 2023
    Inventors: Masaya Nohara, Mikayo Iwata, Yuzu Kobayashi, Hiroaki Taguchi, Takeshi Komatsu
  • Patent number: 11560637
    Abstract: To improve the efficiency of a reduction reaction. A power source applies a voltage to an oxidation electrode immersed in an aqueous solution in an oxidation tank and a reduction electrode immersed in an aqueous solution in a reduction tank, the voltage having a voltage value that changes with a predetermined cycle to be a voltage value at which ions can be desorbed from a surface of the oxidation electrode and a surface of the reduction electrode during one cycle of the voltage change. The frequency of the voltage is set within a range of 10 Hz to 1 kHz.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: January 24, 2023
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Sayumi Sato, Yuya Uzumaki, Yoko Ono, Takeshi Komatsu
  • Publication number: 20230011844
    Abstract: A method for producing cellulose nanofiber carbon includes a freezing step of freezing a solution or gel containing cellulose nanofibers to obtain a frozen product, a drying step of drying the frozen product in a vacuum to obtain a dried product, and a carbonizing step of heating and carbonizing the dried product in an atmosphere in which the dried product does not burn to obtain cellulose nanofiber carbon, in which, in the carbonizing step, the dried product is heated together with a sacrificial agent that is carbonized before the dried product is carbonized to generate a reducing gas.
    Type: Application
    Filed: November 26, 2019
    Publication date: January 12, 2023
    Inventors: Hironobu Minowa, Masaya Nohara, Mikayo Iwata, Hiroaki Taguchi, Takeshi Komatsu
  • Publication number: 20230006287
    Abstract: The present invention provides an air battery using oxygen in air as a cathode active material, the air battery comprising: a cylindrical anode made of a metal; a cathode constituted by a co-continuous body having a three dimensional network structure formed by an integrated plurality of nanostructures having branches; and a separator that is arranged between the cathode and the anode and absorbs an electrolytic solution, wherein: the cathode is arranged inside the anode via the separator; and the anode has an open hole that reaches the separator and constitutes a housing of the air battery.
    Type: Application
    Filed: December 2, 2019
    Publication date: January 5, 2023
    Inventors: Mikayo Iwata, Masaya Nohara, Hiroaki Taguchi, Yuzu Kobayashi, Takeshi Komatsu
  • Publication number: 20230002919
    Abstract: A carbon dioxide gas phase reduction device includes an oxidation tank including an oxidation electrode, a reduction tank to which carbon dioxide is supplied, an intermediate tank that is disposed between the oxidation tank and the reduction tank and capable of pouring and discharging an electrolytic solution, an ion exchange membrane disposed between the oxidation tank and the intermediate tank, a gas reduction sheet in which an ion exchange membrane and a reduction electrode are laminated and which is disposed between the reduction tank and the intermediate tank with the ion exchange membrane facing the intermediate tank and the reduction electrode facing the reduction tank, and a conducting wire connecting the oxidation electrode to the reduction electrode.
    Type: Application
    Filed: December 11, 2019
    Publication date: January 5, 2023
    Inventors: Sayumi Sato, Yuya Uzumaki, Yoko Ono, Takeshi Komatsu
  • Publication number: 20220416329
    Abstract: A metal-air battery includes: a cathode formed of a co-continuous body having a three dimensional network structure formed by an integrated plurality of nanostructures having branches; a foil- or plate-like anode formed of a metal; a separator that absorbs a liquid, which is to be an electrolytic solution; and a foil- or plate-like current collector formed of a metal. The metal-air battery is formed with a wound structure in which the current collector, the cathode, the separator, the anode, and the separator are superimposed and wound in this order.
    Type: Application
    Filed: December 3, 2019
    Publication date: December 29, 2022
    Inventors: Mikayo Iwata, Masaya Nohara, Hiroaki Taguchi, Yuzu Kobayashi, Takeshi Komatsu
  • Publication number: 20220403529
    Abstract: A method for producing a nitride semiconductor photoelectrode includes: a first step of forming an n-type gallium nitride layer on an electrically insulative or conductive substrate; a second step of forming an indium gallium nitride layer on the n-type gallium nitride layer; a third step of forming a p-type nickel oxide layer on the indium gallium nitride layer; and a fourth step of subjecting a nitride semiconductor in which the p-type nickel oxide layer has been formed to heat treatment.
    Type: Application
    Filed: December 3, 2019
    Publication date: December 22, 2022
    Inventors: Yuya Uzumaki, Sayumi Sato, Yoko Ono, Takeshi Komatsu
  • Publication number: 20220399598
    Abstract: There is provided an air battery including a first housings accommodating a base cell including a negative electrode, a positive electrode, and a separator disposed between the negative electrode and the positive electrode, and a second housing containing an electrolyte solution or water, in which the first housing and the negative electrode each have a hole leading to the separator, the second housing has a hole that is capable of being sealed, and the first housing and the second housing are disposed to face the hole of the first housing and the hole of the second housing each other.
    Type: Application
    Filed: November 28, 2019
    Publication date: December 15, 2022
    Inventors: Hiroaki Taguchi, Takeshi Komatsu, Yoko Ono, Yuzu Kobayashi, Mikayo Iwata, Masaya Nohara
  • Publication number: 20220368430
    Abstract: An embodiment communication system includes: one or more slave stations, each of the slave stations including a sensor configured to detect a sensor signal, a controller configured to generate a first electrical signal at a predetermined frequency using the sensor signal, and a sound wave transmitter configured to convert the first electrical signal into a sound wave signal and to emit the sound wave signal; and a master station including a sound wave receiver configured to receive the sound wave signal and to convert the sound wave signal into a second electrical signal, and a controller configured to detect that the sensor of one of the slave stations has detected the sensor signal based on the second electrical signal.
    Type: Application
    Filed: June 26, 2019
    Publication date: November 17, 2022
    Inventors: Naoki Miura, Hideyuki Nosaka, Hiroaki Taguchi, Takeshi Komatsu
  • Patent number: 11472707
    Abstract: There is provided a method for manufacturing a bacterium-produced cellulose carbon having a sufficient specific surface area, and a high mechanical strength. The method manufactures a bacterium-produced cellulose carbon by carbonizing cellulose produced by thermally treating, and the method includes a cellulose forming step S1 of forming bacterium- produced cellulose whereby cellulose nanofibers are dispersed using a bacterium; an impregnating step S2 for impregnating the bacterium-produced cellulose with a supercritical fluid; a drying step S3 of vaporizing the supercritical fluid from the bacterium-produced cellulose containing the supercritical fluid and obtaining a dry product; and a carbonizing step S4 of heating and carbonizing the dry product in an atmosphere not causing combustion of the dry product.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: October 18, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Masaya Nohara, Shuhei Sakamoto, Mikayo Iwata, Masahiko Hayashi, Takeshi Komatsu
  • Publication number: 20220305552
    Abstract: A protein template dispersion solution of the present embodiment includes a protein template containing two or more types of heterogeneous metal ions or alloy nanoparticles; and a solvent in which the protein template is dispersed, wherein alloy nanoparticles are obtained by removing the protein template. A method of producing a protein template dispersion solution according to the present embodiment includes: a step in which a protein template is added to a solution in which heterogeneous metal ions are dissolved and metal ions are introduced into the protein template; and a step in which the protein template and metal ions that are not incorporated into the protein template are separated. A method of producing alloy nanoparticles according to the present embodiment includes a step in which a dispersion solution of heterogeneous metal-ion-containing protein templates is subjected to a heat treatment under a reducing atmosphere to remove a protein template.
    Type: Application
    Filed: May 15, 2019
    Publication date: September 29, 2022
    Inventors: Mikayo Iwata, Masaya Nohara, Hiroaki Taguchi, Takeshi Komatsu
  • Publication number: 20220305468
    Abstract: A protein template is added to a solution in which metal ions of iron and copper are dissolved to introduce the metal ions into the protein template; the protein template is separated from metal ions that have not been incorporated in the protein template; the metal ions that have been incorporated in the protein template are reduced to obtain a protein containing alloy nanoparticles of iron and copper; a sol or gel in which a co-continuous body is dispersed is frozen; the frozen sol or gel is dried in a vacuum to obtain a porous body; the porous body is allowed to support the alloy nanoparticle containing protein; and the protein is removed.
    Type: Application
    Filed: May 24, 2019
    Publication date: September 29, 2022
    Inventors: Mikayo Iwata, Masaya Nohara, Hiroaki Taguchi, Takeshi Komatsu
  • Patent number: 11456498
    Abstract: Provided is a rechargeable lithium-air battery that improves charge-discharge energy efficiency and has good charge-discharge cycle performance. The rechargeable lithium-air battery includes: an air electrode including carbon; a negative electrode including metallic lithium or a lithium-containing substance; and an electrolyte in contact with the air electrode and the negative electrode. The electrolyte includes a salen-based metal complex and a quinone. The quinone includes any one or more of anthraquinone, 2,5-dihydroxy-1,4-benzoquinone, 7,7,8,8-tetracyanodimethane, 2,3-dichloro-5,6-dicyano-1,4-benzoquinone, tetrahydroxy-1,4-benzoquinone, and 2,5-di-tert-butyl-1,4-benzoquinone.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: September 27, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shuhei Sakamoto, Masahiko Hayashi, Masaya Nohara, Mikayo Iwata, Takeshi Komatsu
  • Patent number: 11441748
    Abstract: To improve design of a lighting device. A lighting device includes optically transparent glass plates provided on side faces and placed on an optical path of light emitted from a light source, where some or all of the optically transparent glass plates contain an optically transparent battery adapted to drive the light source; and an optically transparent glass plate that contains a transparent conductive film by being provided on a bottom face, wherein the optically transparent battery is placed in contact with a pair of transparent conductive film layers, which are connected to the light source. The pair of transparent conductive film layers are formed in a pair of parallel linear grooves formed in a surface of the optically transparent glass plate on the bottom face, and a tabular positive tab and negative tab of the optically transparent battery fit in respective ones of the pair of grooves.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: September 13, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yoko Ono, Hironobu Minowa, Shuhei Sakamoto, Takeshi Komatsu
  • Publication number: 20220205143
    Abstract: A method includes a freezing process in which a solution or gel containing cellulose nanofibers is frozen to obtain a frozen component, a drying process in which the frozen component is dried in a vacuum to obtain a dry component, and a carbonizing process in which the dry component is heated and carbonized in a non-combustible atmosphere, and in the carbonizing process, the dry component is heated together with a reducing catalyst and also a material that generates a reducing gas by thermal decomposition.
    Type: Application
    Filed: May 13, 2019
    Publication date: June 30, 2022
    Inventors: Hironobu Minowa, Masaya Nohara, Mikayo Iwata, Shuhei Sakamoto, Hiroaki Taguchi, Takeshi Komatsu
  • Patent number: 11374219
    Abstract: Provided are an easy-to-handle primary battery capable of spontaneous power generation and a moisture sensor including the same. The primary battery includes a separator that is disposed between a negative electrode and negative electrode current collector (a negative electrode) and a positive electrode and positive electrode current collector (a positive electrode), and sucks up electrolyte solution by the capillary phenomenon with an exposed portion of the separator 5 exposed from battery casings.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: June 28, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yoko Ono, Masaya Nohara, Mikayo Iwata, Masahiko Hayashi, Takeshi Komatsu