Patents by Inventor Shin Ozawa

Shin Ozawa 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: 11909034
    Abstract: Provided is an all-solid state secondary battery comprising a laminate in which a positive electrode layer, a solid electrolyte layer, and a negative electrode layer are laminated in this order, in which respective areas of the positive electrode layer, the solid electrolyte layer, and the negative electrode layer satisfy [the area of the positive electrode layer]<[the area of the negative electrode layer]?[the area of the solid electrolyte layer], a buffer layer having an area more than the area of the solid electrolyte layer and having a Young's modulus lower than that of each of, the positive electrode layer, the solid electrolyte layer, and the negative electrode layer is provided on either or both of a side of the positive electrode layer opposite to the solid electrolyte layer side and a side of the negative electrode layer opposite to the solid electrolyte layer side, and the laminate is in a pressurized state through the buffer layer.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: February 20, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Toshihiko Yawata, Hiroaki Mochizuki, Shin Ozawa
  • Patent number: 11658282
    Abstract: A composition for forming an active material layer, including a sulfide-based solid electrolyte, an active material, a conductive auxiliary agent including a carbonaceous material, and a dispersion medium, in which the dispersion medium includes at least one ketone compound dispersion medium in which two aliphatic groups each having 4 or more carbon atoms are bonded to a carbonyl group; a method for manufacturing the composition for forming an active material layer; a method for manufacturing a solid electrolyte-containing sheet; and a method for manufacturing an all-solid state secondary battery.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: May 23, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Hideyuki Suzuki, Shin Ozawa
  • Patent number: 11605833
    Abstract: Provided are a solid electrolyte composition including an inorganic solid electrolyte and a dispersion medium (A), in which the dispersion medium (A) includes a ketone compound (A1), and at least one dispersant (A2) selected from a ketone compound (A2-1) having a chemical structure different from the ketone compound (A1) or a alcohol compound (A2-2) and a method of manufacturing the same, a solid electrolyte-containing sheet, an electrode sheet for an all-solid state secondary battery, and a method of manufacturing an all-solid state secondary battery.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: March 14, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Hiroshi Isojima, Shin Ozawa
  • Patent number: 11552300
    Abstract: Provided are an electrode sheet for an all-solid state secondary battery and an all-solid state secondary battery including the electrode sheet. The electrode sheet includes a current collector, a primer layer, and an electrode active material layer in this order, in which the electrode active material layer includes an inorganic solid electrolyte having ion conductivity of a metal belonging to Group 1 or Group 2 in the periodic table, an active material, and a binder a1, the primer layer includes the binder a1 and a binder a2, and in a case where the primer layer is equally divided into six sub-layers in a thickness direction and the six sub-layers are set as a first sub-layer to a sixth sub-layer in order from the electrode active material layer side toward the current collector side, a relationship between a ratio B1 of a content of a1 to a total content of a1 and a2 in the first sub-layer and a ratio B6 of a content of a1 to a total content of a1 and a2 in the sixth sub-layer satisfies B1>B6.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: January 10, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Toshihiko Yawata, Hiroaki Mochizuki, Shin Ozawa
  • Publication number: 20210242465
    Abstract: Provided are an electrode composition, an electrode sheet for an all-solid state secondary battery, an all-solid state secondary battery, and respective methods of manufacturing the electrode composition, the electrode sheet for an all-solid state secondary battery, and the all-solid state secondary battery. The electrode composition includes: an inorganic solid electrolyte; an active material; and a distributing component that binds to the inorganic solid electrolyte and the active material, in which one kind of the distributing component is a binder, an adsorption rate A of the binder to the active material and an adsorption rate B of the binder to the inorganic solid electrolyte satisfy the following Expressions I) and II), and a distribution rate of the distributing component to the active material in an electrode active material layer formed of the electrode composition exceeds 50%.
    Type: Application
    Filed: April 13, 2021
    Publication date: August 5, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Hiroshi ISOJIMA, Shin OZAWA
  • Publication number: 20210234172
    Abstract: Provided are an electrode composition, an electrode sheet for an all-solid state secondary battery and an all-solid state secondary battery that are formed of the electrode composition, and respective methods of manufacturing the electrode composition, the electrode sheet for an all-solid state secondary battery, and the all-solid state secondary battery. The electrode composition includes: an inorganic solid electrolyte; an active material; and a distributing component that binds to the inorganic solid electrolyte and the active material, in which one kind of the distributing component is a binder, a polymer forming the binder includes a repeating unit having an amino group, a sulfanyl group, a hydroxy group, a carboxy group, or an anone group, and a distribution rate of the distributing component to the inorganic solid electrolyte in an electrode active material layer formed of the electrode composition exceeds 60%.
    Type: Application
    Filed: April 13, 2021
    Publication date: July 29, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Hiroshi ISOJIMA, Shin OZAWA
  • Publication number: 20210184252
    Abstract: Provided are a negative electrode composition including a sulfide-based inorganic solid electrolyte, a negative electrode active material containing a silicon atom or a tin atom, and a polymer, in which the polymer has substantially no adsorption capacity to the negative electrode active material and the sulfide-based inorganic solid electrolyte, a modulus of elasticity of the polymer measured in accordance with JIS K 7161 (2014) is 100 MPa or higher and 1000 MPa or lower, and in a case where a negative electrode active material layer is formed of the negative electrode composition, the polymer is contained in the negative electrode active material layer in a particle form, a negative electrode sheet for an all-solid state secondary battery, an all-solid state secondary battery, a method for manufacturing a negative electrode sheet for an all-solid state secondary battery, and a method for manufacturing an all-solid state secondary battery.
    Type: Application
    Filed: February 24, 2021
    Publication date: June 17, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Toshihiko YAWATA, Shin OZAWA, Hideyuki SUZUKI, Hiroshi ISOJIMA
  • Publication number: 20210184251
    Abstract: Provided is an electrode composition including: an active material; an inorganic solid electrolyte having an average particle size of 2 ?m or less; and a particle-shaped polymer, in which in a case where an average particle size of the particle-shaped polymer is represented by d nm and a content of the particle-shaped polymer with respect to all the solid components of the electrode composition is represented by x mass %, the average particle size d and the content x satisfy specific relationships. Provided are also an electrode sheet for an all-solid state secondary battery and an all-solid state secondary battery that are formed of the electrode composition, and respective methods of manufacturing an electrode sheet for an all-solid state secondary battery and manufacturing an all-solid state secondary battery.
    Type: Application
    Filed: February 24, 2021
    Publication date: June 17, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Hiroshi ISOJIMA, Shin OZAWA
  • Publication number: 20210104773
    Abstract: A solid electrolyte-containing sheet includes a laminate of three or more solid electrolyte layers, in which the solid electrolyte layer includes an inorganic solid electrolyte and a binder, the inorganic solid electrolytes included in two solid electrolyte layers that are disposed on both surface sides of the laminate among the solid electrolyte layers are formed of particles having an average particle size of 0.3 to 0.9 the inorganic solid electrolyte included in at least one of solid electrolyte layers that are disposed between the two solid electrolyte layers disposed on both the surface sides of the laminate is formed of particles having an average particle size of 1 to 5 ?m, and the binder included in the at least one solid electrolyte layer is particulate.
    Type: Application
    Filed: June 22, 2020
    Publication date: April 8, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Shin OZAWA, Shinji IMAI, Hideyuki SUZUKI, Hiroshi ISOJIMA, Toshihiko YAWATA
  • Publication number: 20210083299
    Abstract: Provided is a current collector with an easily adhesive layer including an easily adhesive layer that is provided on at least one surface of a current collector, in which the easily adhesive layer includes a polymer having a solubility of 1 g/100 g or higher in toluene at 25° C. Provided are also an electrode, an all-solid state secondary battery, an electronic apparatus, and an electric vehicle that include the current collector with an easily adhesive layer, and methods of manufacturing the current collector with an easily adhesive layer, the electrode, and the all-solid state secondary battery.
    Type: Application
    Filed: November 25, 2020
    Publication date: March 18, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Shin OZAWA, Hiroshi ISOJIMA
  • Publication number: 20210013544
    Abstract: Provided are a method of manufacturing a solid electrolyte sheet including: heating a preformed body that is obtained by performing pre-pressure-forming on inorganic solid electrolyte particles containing solid particles plastically deformable at 250° C. or lower at a specific temperature or on inorganic solid electrolyte particles containing solid particles that have a thermal decomposition temperature of 250° C. or lower and that are plastically deformable at 250° C. or lower at a specific temperature and then performing pre-pressure-forming at a specific temperature to form a solid electrolyte layer consisting of inorganic solid electrolyte particles, a method of manufacturing a negative electrode sheet for an all-solid state secondary battery, and a method of manufacturing an all-solid state secondary battery, which include the method of manufacturing a solid electrolyte sheet.
    Type: Application
    Filed: September 28, 2020
    Publication date: January 14, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Shinji IMAI, Hideyuki SUZUKI, Shin OZAWA
  • Publication number: 20210013543
    Abstract: Provided are a method of manufacturing a solid electrolyte sheet including: a step of performing preforming on inorganic solid electrolyte particles containing solid particles plastically deformable at 250° C. or lower; and a step of performing shearing processing on one surface of the obtained preformed body, in which a solid electrolyte layer consisting of the inorganic solid electrolyte particles is formed, and a method of manufacturing a negative electrode sheet for an all-solid state secondary battery and an all-solid state secondary battery, which include the method of manufacturing a solid electrolyte sheet.
    Type: Application
    Filed: September 28, 2020
    Publication date: January 14, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Shinji IMAI, Hideyuki SUZUKI, Shin OZAWA
  • Publication number: 20200373565
    Abstract: Provided is an all-solid state secondary battery comprising a laminate in which a positive electrode layer, a solid electrolyte layer, and a negative electrode layer are laminated in this order, in which respective areas of the positive electrode layer, the solid electrolyte layer, and the negative electrode layer satisfy [the area of the positive electrode layer]<[the area of the negative electrode layer]?[the area of the solid electrolyte layer], a buffer layer having an area more than the area of the solid electrolyte layer and having a Young's modulus lower than that of each of, the positive electrode layer, the solid electrolyte layer, and the negative electrode layer is provided on either or both of a side of the positive electrode layer opposite to the solid electrolyte layer side and a side of the negative electrode layer opposite to the solid electrolyte layer side, and the laminate is in a pressurized state through the buffer layer.
    Type: Application
    Filed: August 7, 2020
    Publication date: November 26, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Toshihiko YAWATA, Hiroaki MOCHIZUKI, Shin OZAWA
  • Publication number: 20200365900
    Abstract: Provided are an electrode sheet for an all-solid state secondary battery and an all-solid state secondary battery including the electrode sheet. The electrode sheet includes a current collector, a primer layer, and an electrode active material layer in this order, in which the electrode active material layer includes an inorganic solid electrolyte having ion conductivity of a metal belonging to Group 1 or Group 2 in the periodic table, an active material, and a binder a1, the primer layer includes the binder a1 and a binder a2, and in a case where the primer layer is equally divided into six sub-layers in a thickness direction and the six sub-layers are set as a first sub-layer to a sixth sub-layer in order from the electrode active material layer side toward the current collector side, a relationship between a ratio B1 of a content of a1 to a total content of a1 and a2 in the first sub-layer and a ratio B6 of a content of a1 to a total content of a1 and a2 in the sixth sub-layer satisfies B1>B6.
    Type: Application
    Filed: August 3, 2020
    Publication date: November 19, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Toshihiko YAWATA, Hiroaki MOCHIZUKI, Shin OZAWA
  • Publication number: 20200350628
    Abstract: Provided are a solid electrolyte composition including an inorganic solid electrolyte and a dispersion medium (A), in which the dispersion medium (A) includes a ketone compound (A1), and at least one dispersant (A2) selected from a ketone compound (A2-1) having a chemical structure different from the ketone compound (A1) or a alcohol compound (A2-2) and a method of manufacturing the same, a solid electrolyte-containing sheet, an electrode sheet for an all-solid state secondary battery, and a method of manufacturing an all-solid state secondary battery.
    Type: Application
    Filed: July 21, 2020
    Publication date: November 5, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Hiroshi ISOJIMA, Shin OZAWA
  • Publication number: 20200313161
    Abstract: Provided are an electrode sheet for an all-solid state secondary battery, including, in the following order: a conductor layer containing conductive particles (C); and an electrode active material layer on at least one surface of an electrode collector, in which the electrode active material layer containing an active material (A) having a median diameter Ram and an inorganic solid electrolyte (B) having a median diameter Rse is provided on a surface of the conductor layer having a maximum height roughness Rz of 3.0 to 10 ?m, which is defined in JIS B 0601:2013, and Ram, Rse, and Rz satisfy the following Expressions (1) and (2), an all-solid state secondary battery provided with the electrode sheet for an all-solid state secondary battery, and a method thereof. 0.15<Rz/Ram<90??Expression (1): 0.
    Type: Application
    Filed: June 16, 2020
    Publication date: October 1, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Hiroshi ISOJIMA, Shin OZAWA
  • Publication number: 20200266486
    Abstract: Provided are a solid electrolyte composition including a sulfide-based inorganic solid electrolyte and a plurality of kinds of alkane dispersion media, in which the plurality of kinds of alkane dispersion media include, with respect to a peak of each alkane dispersion medium obtained by measurement under specific conditions using a gas chromatography, two kinds of alkane dispersion media in which a difference in retention time between mutually adjacent peaks of dispersion media is more than 0 minutes and within 0.2 minutes, a solid electrolyte-containing sheet, an all-solid state secondary battery, and methods for manufacturing a solid electrolyte-containing sheet and an all-solid state secondary battery.
    Type: Application
    Filed: May 3, 2020
    Publication date: August 20, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Hideyuki SUZUKI, Shin OZAWA
  • Publication number: 20200227726
    Abstract: A composition for forming an active material layer, including a sulfide-based solid electrolyte, an active material, a conductive auxiliary agent including a carbonaceous material, and a dispersion medium, in which the dispersion medium includes at least one ketone compound dispersion medium in which two aliphatic groups each having 4 or more carbon atoms are bonded to a carbonyl group; a method for manufacturing the composition for forming an active material layer; a method for manufacturing a solid electrolyte-containing sheet; and a method for manufacturing an all-solid state secondary battery.
    Type: Application
    Filed: March 30, 2020
    Publication date: July 16, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Hideyuki SUZUKI, Shin OZAWA
  • Patent number: 10341774
    Abstract: Provided is a video audio system including electroacoustic conversion units which include an electroacoustic conversion film having a macromolecular composite piezoelectric body formed by dispersing piezoelectric body particles in a viscoelastic matrix formed of a macromolecular material that is viscoelastic at normal temperature and thin film electrodes respectively laminated on both surfaces of the macromolecular composite piezoelectric body, curve and support the electroacoustic conversion film, and use at least a part of the electroacoustic conversion film as vibration regions and a display device which is a screen or a video display device to which videos are projected, in which at least one of the electroacoustic conversion units is disposed on a rear surface opposite to a surface of the display device on which videos are displayed, the plurality of vibration regions is arranged on the entire rear surface of the display device, and location information of the vibration regions is included in sound data
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: July 2, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Daisuke Inoue, Tetsu Miyoshi, Shin Ozawa
  • Patent number: 10147868
    Abstract: Provided are a polymer composite piezoelectric body in which the conversion efficiency between electricity and sound is increased and thus the sound pressure level is improved, an electroacoustic transduction film, and an electroacoustic transducer. The polymer composite piezoelectric body includes a viscoelastic matrix formed of a polymer material having a cyanoethyl group, piezoelectric body particles which are dispersed in the viscoelastic matrix and have an average particle diameter of more than or equal to 2.5 ?m, and dielectric particles dispersed in the viscoelastic matrix, in which the dielectric particles are formed of a material different from that of the piezoelectric body particles and have an average particle diameter of less than or equal to 0.5 ?m and a relative permittivity of more than or equal to 80.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: December 4, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Shin Ozawa, Takami Arakawa