Patents by Inventor Masahiro Yanagida

Masahiro Yanagida 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: 20220280902
    Abstract: A slurry storage device that stores an aqueous slurry containing a high nickel material prepared by a dispersion device which mixes a powder and a solvent, the device includes a holding unit that holds the aqueous slurry, and a pH value rise suppressing unit that suppresses a rise in a pH value of the aqueous slurry.
    Type: Application
    Filed: May 24, 2022
    Publication date: September 8, 2022
    Inventors: Keiichiro Onishi, Keiichi Asami, Takashi Mukai, Taichi Sakamoto, Hideaki Tanaka, Hiroshi Senoh, Masahiro Yanagida
  • Publication number: 20220158249
    Abstract: The present invention is able to provide a method for producing an all-solid-state battery that has a solid electrolyte layer between a positive electrode layer and a negative electrode layer. This method for producing an all-solid-state battery is characterized by comprising: a step wherein a coating liquid is applied to at least one of the positive electrode layer and the negative electrode layer, said coating liquid containing a solid electrolyte solution, which is obtained by dissolving a solid electrolyte in a solvent, and fine particles which are insoluble in the solid electrolyte solution; and a step wherein the solvent is removed from the applied coating liquid, thereby having the solid electrolyte deposit on at least one of the positive electrode layer and the negative electrode layer.
    Type: Application
    Filed: March 4, 2020
    Publication date: May 19, 2022
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Genki NOGAMI, Keita NOGUCHI, Aki KATORI, Naoto YAMASHITA, Takashi MUKAI, Masahiro YANAGIDA
  • Patent number: 11289693
    Abstract: Provided is a lithium-ion battery or lithium-ion capacitor electrode material that can compensate for the drawbacks of a hydrophobic active material, that can impart hydrophilicity to the hydrophobic active material, and that can exhibit excellent dispersibility without deteriorating electrode characteristics. Specifically provided is an electrode material for a lithium-ion battery or a lithium-ion capacitor, the electrode material comprising a composite powder in which a B component is supported or coated on a surface of an A component, the A component comprising a material capable of electrochemically occluding and releasing lithium ions, the B component being sulfur-modified cellulose, and the B component being contained in an amount of 0.01 mass % or more based on 100 mass % of the total amount of the A component and the B component.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: March 29, 2022
    Assignees: DAI-ICHI KOGYO SEIYAKU CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Takashi Mukai, Yuta Ikeuchi, Masahiro Yanagida, Yasuteru Saitou, Ayano Sofue, Tetsuya Higashizaki
  • Patent number: 11289706
    Abstract: A lithium ion secondary battery includes a positive electrode having a positive electrode active material layer on a current collector, a negative electrode having a negative electrode active material layer on a current collector, and a separator disposed between the positive electrode and the negative electrode and impregnated with a non-aqueous electrolyte solution. The positive electrode active material layer contains a positive electrode active material and a binder, the negative electrode active material layer contains a negative electrode active material and a binder, the binder of the negative electrode active material layer contains a copolymer of vinyl alcohol and an alkali metal neutralized product of ethylenically unsaturated carboxylic acid, and the separator includes a polymeric base material containing an inorganic compound or includes a polymer having a melting point or glass transition temperature of 140° C. or higher.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: March 29, 2022
    Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Yuta Ikeuchi, Taichi Sakamoto, Takashi Mukai, Masahiro Yanagida, Junichi Fujishige, Masako Kinno, Erina Takahashi
  • Patent number: 11251418
    Abstract: Provided is a method for manufacturing a slurry for a positive electrode of a nonaqueous electrolyte secondary battery containing an alkali metal complex oxide, the method making it possible to reliably deaerate surplus carbonic acid gas after an alkali component of a slurry containing the alkali metal complex oxide is neutralized within a short period of time. The method for manufacturing a slurry for a positive electrode of a nonaqueous electrolyte secondary battery includes a step of manufacturing an electrode slurry including a step of performing a neutralization treatment on an alkali component in the slurry by using inorganic carbon dissolved in a solvent of the slurry and a step of deaerating the inorganic carbon in the slurry as carbonic acid gas by causing cavitation.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: February 15, 2022
    Assignees: NIHON SPINDLE MANUFACTURING CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Taichi Sakamoto, Takashi Mukai, Yuta Ikeuchi, Naoto Yamashita, Masahiro Yanagida, Keiichi Asami, Keiichiro Onishi
  • Publication number: 20210288326
    Abstract: Provided are a lithium ion secondary battery in which heat generation is suppressed when the battery is internally short-circuited by an external impact, such as nail penetration or collapse, or short-circuited by foreign matter contamination or the like; and an electrical appliance using the battery. More specifically, the following lithium ion secondary battery and electrical appliance comprising the lithium ion secondary battery are provided.
    Type: Application
    Filed: October 11, 2017
    Publication date: September 16, 2021
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Yuta IKEUCHI, Taichi SAKAMOTO, Takashi MUKAI, Masahiro YANAGIDA, Junichi FUJISHIGE, Masako KINNO, Erina TAKAHASHI
  • Patent number: 11088391
    Abstract: Provided is a lithium ion battery whose manufacturing process is simple and which has high energy density and heat resistance.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: August 10, 2021
    Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, MURATA MANUFACTURING CO., LTD.
    Inventors: Akihiro Yamano, Tetsuo Sakai, Masahiro Yanagida, Masanori Morishita, Masashi Higuchi
  • Patent number: 10847279
    Abstract: An object of the present invention is to provide a novel sulfur-based positive-electrode active material which can largely improve cyclability of a lithium-ion secondary battery, a positive electrode comprising the positive-electrode active material and a lithium-ion secondary battery comprising the positive electrode. The sulfur-based positive-electrode active material is one comprising: a carbon skeleton derived from a polymer composed of a monomer unit having at least one hetero atom-containing moiety, and sulfur incorporated into the carbon skeleton as the carbon skeleton is formed from the polymer by heat treatment.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: November 24, 2020
    Assignees: SUMITOMO RUBBER INDUSTRIES, LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Tatsuya Kubo, Toshikatsu Kojima, Tetsuo Sakai, Akihiro Yamano, Masahiro Yanagida
  • Patent number: 10798807
    Abstract: There is provided a static electricity removal structure in a low-humidity space, in which static electricity can be removed with high efficiency in the low-humidity space by using a static electricity removal device. A low-humidity space is configured such that dehumidified air is supplied from one side of the low-humidity space into the low-humidity space through a blowout surface material in which ventilation pore is formed, and exhausting is performed from the other side of the low-humidity space, which opposes the blowout surface material. A static electricity removal device is disposed on a downstream side of the blowout surface material.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: October 6, 2020
    Assignees: NIHON SPINDLE MANUFACTURING CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Taichi Sakamoto, Takashi Mukai, Yuta Ikeuchi, Masahiro Yanagida, Kenji Izumi, Teppei Taniguchi
  • Patent number: 10797323
    Abstract: A current collector included in a fuel cell, the fuel cell including a membrane electrode assembly including a solid polymer electrolyte layer and a pair of electrode layers formed to sandwich the solid polymer electrolyte layer, the current collector stacked on each electrode layer, and a gas flow path for supply of a gas to each electrode layer, the current collector including a metal porous body which is stacked on the electrode layer, has a flowing gas supplied to the electrode layer, and is rendered conducting to the electrode layer, and the metal porous body including an electrically conductive layer containing electrically conductive particles fixed to a corrosion-resistant and water-repellent resin at least on a side of the electrode layer.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: October 6, 2020
    Assignees: Sumitomo Electric Industries, Ltd., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Kazuki Okuno, Takahiro Higashino, Masatoshi Majima, Tsutomu Iwaki, Masahiro Yanagida, Tetsuo Sakai
  • Publication number: 20200303778
    Abstract: Provided is a production method for an all-solid-state battery having a solid electrolyte layer between a positive electrode layer and a negative electrode layer, the production method including: coating or impregnating the positive electrode layer and/or the negative electrode layer with a solid electrolyte solution in which a boron hydride compound serving as the solid electrolyte has been dissolved in a solvent; and removing the solvent from the coated or impregnated solid electrolyte solution and causing the solid electrolyte to precipitate on the positive electrode layer and/or the negative electrode layer.
    Type: Application
    Filed: October 12, 2018
    Publication date: September 24, 2020
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Genki NOGAMI, Masahiro SHIMADA, Tomohiro ITO, Aki KATORI, Keita NOGUCHI, Naoto YAMASHITA, Takashi MUKAI, Masahiro YANAGIDA
  • Publication number: 20200251720
    Abstract: Provided is a lithium-ion battery or lithium-ion capacitor electrode material that can compensate for the drawbacks of a hydrophobic active material, that can impart hydrophilicity to the hydrophobic active material, and that can exhibit excellent dispersibility without deteriorating electrode characteristics. Specifically provided is an electrode material for a lithium-ion battery or a lithium-ion capacitor, the electrode material comprising a composite powder in which a B component is supported or coated on a surface of an A component, the A component comprising a material capable of electrochemically occluding and releasing lithium ions, the B component being sulfur-modified cellulose, and the B component being contained in an amount of 0.01 mass % or more based on 100 mass % of the total amount of the A component and the B component.
    Type: Application
    Filed: July 23, 2018
    Publication date: August 6, 2020
    Applicants: DAI-ICHI KOGYO SEIYAKU CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Takashi MUKAI, Yuta IKEUCHI, Masahiro YANAGIDA, Yasuteru SAITOU, Ayano SOFUE, Tetsuya HIGASHIZAKI
  • Patent number: 10505194
    Abstract: An object of the present invention is to provide a novel positive electrode which is produced using a rubber being an inexpensive material and is capable of enhancing a charge and discharge capacity and cyclability of a lithium-ion secondary battery, and the lithium-ion secondary battery composed of the positive electrode. In the lithium-ion secondary battery, the positive electrode comprises a current collector and an electrode layer formed on a surface of the current collector, the electrode layer comprises an active material, an electrically-conductive additive and a thermosetting resin binder subjected to thermosetting, and the active material comprises a sulfur-based positive-electrode active material prepared by heat-treating a starting material comprising a rubber and sulfur under a non-oxidizing atmosphere.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: December 10, 2019
    Assignees: SUMITOMO RUBBER INDUSTRIES, LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Tatsuya Kubo, Akihiro Yamano, Naoto Yamashita, Toshikatsu Kojima, Masahiro Yanagida
  • Publication number: 20190207210
    Abstract: An object of the present invention is to provide a novel sulfur-based positive-electrode active material which can largely improve cyclability of a lithium-ion secondary battery, a positive electrode comprising the positive-electrode active material and a lithium-ion secondary battery comprising the positive electrode. The sulfur-based positive-electrode active material is one comprising: a carbon skeleton derived from a polymer composed of a monomer unit having at least one hetero atom-containing moiety, and sulfur incorporated into the carbon skeleton as the carbon skeleton is formed from the polymer by heat treatment.
    Type: Application
    Filed: March 11, 2019
    Publication date: July 4, 2019
    Applicants: SUMITOMO RUBBER INDUSTRIES, LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Tatsuya KUBO, Toshikatsu KOJIMA, Tetsuo SAKAI, Akihiro YAMANO, Masahiro YANAGIDA
  • Publication number: 20190198877
    Abstract: An object of the present invention is to provide a novel positive electrode which is produced using a rubber being an inexpensive material and is capable of enhancing a charge and discharge capacity and cyclability of a lithium-ion secondary battery, and the lithium-ion secondary battery composed of the positive electrode. In the lithium-ion secondary battery, the positive electrode comprises a current collector and an electrode layer formed on a surface of the current collector, the electrode layer comprises an active material, an electrically-conductive additive and a thermosetting resin binder subjected to thermosetting, and the active material comprises a sulfur-based positive-electrode active material prepared by heat-treating a starting material comprising a rubber and sulfur under a non-oxidizing atmosphere.
    Type: Application
    Filed: February 28, 2019
    Publication date: June 27, 2019
    Applicants: SUMITOMO RUBBER INDUSTRIES, LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Tatsuya KUBO, Akihiro YAMANO, Naoto YAMASHITA, Toshikatsu KOJIMA, Masahiro YANAGIDA
  • Patent number: 10326134
    Abstract: An object of the present invention is to provide a novel sulfur-based positive electrode active material for a lithium-ion secondary battery which is excellent in cyclability and can largely improve a charging and discharging capacity, a positive electrode comprising the positive electrode active material and a lithium-ion secondary battery made using the positive electrode. The sulfur-based positive electrode active material is obtainable by subjecting a starting material comprising a polymer, sulfur and an organometallic compound dispersed in a form of fine particles to heat-treatment under a non-oxidizing atmosphere, wherein the particles of metallic sulfide resulting from sulfurization of the organometallic compound are dispersed in the heat-treated material, and particle size of the metallic sulfide particles is not less than 10 nm and less than 100 nm.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: June 18, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Tatsuya Kubo, Akihiro Yamano, Naoto Yamashita, Masahiro Yanagida
  • Publication number: 20190148734
    Abstract: An object of the present invention is to provide a lithium-ion secondary battery having a large charge and discharge capacity and excellent cycle characteristics irrespective of kind and shape of a current collector. The lithium-ion secondary battery comprises an electrode comprising a primer layer for protecting a current collector and a crosslinking agent layer comprising a compound being capable of crosslinking an aqueous binder contained in the primer layer, the both layers being disposed between a current collector and an active material layer comprising a sulfur-based active material.
    Type: Application
    Filed: October 11, 2018
    Publication date: May 16, 2019
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Naoto YAMASHITA, Takashi MUKAI, Masahiro YANAGIDA, Tatsuya KUBO, Fumiya CHUJO
  • Publication number: 20180213631
    Abstract: There is provided a static electricity removal structure in a low-humidity space, in which static electricity can be removed with high efficiency in the low-humidity space by using a static electricity removal device. A low-humidity space is configured such that dehumidified air is supplied from one side of the low-humidity space into the low-humidity space through a blowout surface material in which ventilation pore is formed, and exhausting is performed from the other side of the low-humidity space, which opposes the blowout surface material. A static electricity removal device is disposed on a downstream side of the blowout surface material.
    Type: Application
    Filed: March 26, 2018
    Publication date: July 26, 2018
    Inventors: Taichi Sakamoto, Takashi Mukai, Yuta Ikeuchi, Masahiro Yanagida, Keiji Izumi, Teppei Taniguchi
  • Publication number: 20180183047
    Abstract: Provided is a method for manufacturing a slurry for a positive electrode of a nonaqueous electrolyte secondary battery containing an alkali metal complex oxide, the method making it possible to reliably deaerate surplus carbonic acid gas after an alkali component of a slurry containing the alkali metal complex oxide is neutralized within a short period of time. The method for manufacturing a slurry for a positive electrode of a nonaqueous electrolyte secondary battery includes a step of manufacturing an electrode slurry including a step of performing a neutralization treatment on an alkali component in the slurry by using inorganic carbon dissolved in a solvent of the slurry and a step of deaerating the inorganic carbon in the slurry as carbonic acid gas by causing cavitation.
    Type: Application
    Filed: February 20, 2018
    Publication date: June 28, 2018
    Inventors: Taichi Sakamoto, Takashi Mukai, Yuta Ikeuchi, Naoto Yamashita, Masahiro Yanagida, Keiichi Asami, Keiichiro Onishi
  • Publication number: 20180114975
    Abstract: A lithium ion battery negative electrode is used in a lithium ion battery. In the electrode, a negative electrode active material which is a Si alloy composed of a eutectic structure of a Si phase and a Si2Ti phase and another negative electrode active material layer containing a binder having a three-dimensional structure are formed on a negative electrode current collector.
    Type: Application
    Filed: February 1, 2016
    Publication date: April 26, 2018
    Inventors: Masahiro YANAGIDA, Hideaki TANAKA, Tetsuo SAKAI, Masanori MORISHITA, Toru KAWAI