Patents by Inventor Koh Yoshioka

Koh Yoshioka 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: 12325928
    Abstract: A roughened nickel-plated sheet including a roughened nickel layer on at least one surface of a metal substrate as the outermost layer thereof, the roughened nickel layer being formed of a plurality of nickel protrusions. When the structure of the roughened nickel-plated sheet is observed at height positions with a focused ion beam scanning electron microscope (FIB-SEM), the absolute value of the change rate of the nickel occupancy is equal to or less than a predetermined value, and the nickel occupancy and the number of nickel protrusions present at a height position located 2.0 ?m from the base position of the roughened nickel layer toward the surface in the height direction are equal to or more than predetermined values, respectively.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: June 10, 2025
    Assignee: TOYO KOHAN CO., LTD.
    Inventors: Shinichirou Horie, Etsuro Tsutsumi, Toshifumi Koyanagi, Koh Yoshioka, Kyoko Takano, Shunki Obata, Satoko Harada, Keishi Katsura, Misato Ueno
  • Patent number: 12322809
    Abstract: [Object] To provide a current collector for battery, having a strength sufficient to suppress breakage and tears during production feared in association with thinning, and a battery having the current collector. [Solving Means] The current collector for battery according to the present invention has at least a first metal layer containing at least a metal selected from Cu, Fe, and Ni, and a second metal layer laminated on the first metal layer and containing at least a metal selected from Cu, Fe, and Ni other than the metal of the first metal layer. One of the first metal layer and the second metal layer contains the Ni, and a laminate interface between the first metal layer and the second metal layer has a roughness Ra?0.12.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: June 3, 2025
    Assignee: TOYO KOHAN CO., LTD.
    Inventors: Shinichirou Horie, Hidehiko Kobayashi, Koh Yoshioka
  • Patent number: 12270109
    Abstract: A surface-treated steel sheet, including: a steel sheet; and a nickel-cobalt-iron diffusion layer formed as an outermost surface layer on the steel sheet. When a content of Ni, a content of Co and a content of Fe of the nickel-cobalt-iron diffusion layer are determined based on a Ni intensity, a Co intensity and a Fe intensity each sequentially measured in the depth direction from the surface side of the nickel-cobalt-iron diffusion layer by a radio frequency glow discharge optical emission spectrometry, a content of Co at a specific depth position D, InCo_D, is 5% by mass or higher and a content of Fe at the specific depth position D, InFe_D, is 11% by mass or higher, the specific depth position D being a position where the Ni intensity is 0.5% of the maximum value of the Ni intensity. Also disclosed is a method for manufacturing the surface-treated steel sheet.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: April 8, 2025
    Assignee: TOYO KOHAN CO., LTD.
    Inventors: Yuji Nakano, Daisuke Matsushige, Koh Yoshioka
  • Patent number: 12199294
    Abstract: A surface-treated steel sheet for a battery container includes a steel sheet, an iron-nickel diffusion layer formed on the steel sheet, and a nickel layer formed on the iron-nickel diffusion layer and constituting the outermost layer. When the Fe intensity and the Ni intensity are continuously measured from the surface of the surface-treated steel sheet for a battery container along the depth direction with a high frequency glow discharge optical emission spectrometric analyzer, the thickness of the iron-nickel diffusion layer being the difference (D2?D1) between the depth (D1) at which the Fe intensity exhibits a first predetermined value and the depth (D2) at which the Ni intensity exhibits a second predetermined value is 0.04 to 0.31 ?m; and the total amount of the nickel contained in the iron-nickel diffusion layer and the nickel contained in the nickel layer is 10.8 to 26.7 g/m2.
    Type: Grant
    Filed: August 15, 2023
    Date of Patent: January 14, 2025
    Assignee: TOYO KOHAN CO., LTD.
    Inventors: Kota Sadaki, Koh Yoshioka
  • Publication number: 20250007054
    Abstract: Provided is a battery container (1) including a can body (2) and a can lid (3), each being made of a metal. A peripheral edge portion of the can lid (3) is joined to a peripheral edge of an opening portion of the can body (2) formed in a bottomed cylindrical shape. A bottom portion (21) of the can body (2) is formed so as to include a curved surface, and the can lid (3) is formed so as to include a curved surface that is curved in the same manner as an area of the bottom portion (21) of the can body (2) that is formed as the curved surface.
    Type: Application
    Filed: September 13, 2024
    Publication date: January 2, 2025
    Applicants: TOYO SEIKAN GROUP HOLDINGS, LTD., TOYO KOHAN CO., LTD., TOYO SEIKAN CO., LTD.
    Inventors: Tomomi KOBAYASHI, Takeshi Aihara, Kouta Segami, Koh Yoshioka, Kei Oohori
  • Publication number: 20240376624
    Abstract: A roughened plated sheet including a roughened plated layer having a roughened nickel plated layer and a zinc plated layer formed on at least one surface of a metal substrate in this order from the metal substrate side, wherein a ten-point average roughness RZjis of a surface of the roughened plated layer, according to laser microscope measurement, is 3 ?m or more, an adhesion amount of the roughened nickel plated layer is 0.4 to 14.0 g/m2, and an adhesion amount of the zinc plated layer is 3 g/m2 or more.
    Type: Application
    Filed: July 23, 2024
    Publication date: November 14, 2024
    Applicant: TOYO KOHAN CO., LTD.
    Inventors: Hiroki YANAGA, Shinichirou Horie, Etsuro Tsutsumi, Masashi Ichishima, Toshifumi Koyanagi, Koh Yoshioka
  • Patent number: 12104271
    Abstract: A roughened plated sheet including a roughened plated layer having a roughened nickel plated layer and a zinc plated layer formed on at least one surface of a metal substrate in this order from the metal substrate side, wherein a ten-point average roughness Rzjis of a surface of the roughened plated layer, according to laser microscope measurement, is 3 ?m or more, and the metal substrate is a steel sheet.
    Type: Grant
    Filed: June 28, 2023
    Date of Patent: October 1, 2024
    Assignee: TOYO KOHAN CO., LTD.
    Inventors: Hiroki Yanaga, Shinichirou Horie, Etsuro Tsutsumi, Masashi Ichishima, Toshifumi Koyanagi, Koh Yoshioka
  • Publication number: 20240229284
    Abstract: [Object] To provide a surface treated steel foil having hydrogen barrier properties suitable for a bipolar battery. [Solving Means] A surface treated steel foil having a first surface and a second surface located on a side opposite to the first surface, the surface treated steel foil including a base material composed of a low carbon steel or an ultra low carbon steel, and an iron-nickel alloy layer laminated on the base material on at least one surface side of the first surface side and the second surface side. Fe1Ni1 is included as an alloy phase in the iron-nickel alloy layer, an orientation index in X-ray diffraction of a (220) plane of Fe1Ni1 in the surface having the iron-nickel alloy layer is not less than 1.0, and the ratio of the maximum value of diffraction intensity of the (220) plane of Fe1Ni1 and the maximum value of diffraction intensity of a Fe(200) plane satisfies the following formula (1).
    Type: Application
    Filed: April 28, 2022
    Publication date: July 11, 2024
    Inventors: Etsuro TSUTSUMI, Kyoko TAKANO, Shinichirou HORIE, Koh YOSHIOKA, Keishi KATSURA, Satoko HARADA, Misato UENO, Toshifumi KOYANAGI, Shunki OBATA
  • Publication number: 20240234740
    Abstract: To provide a surface treated steel foil that is for a current collector and that has hydrogen barrier properties suitable for a battery using a hydrogen occluding alloy. The surface treated steel foil for a current collector has a first surface on which a hydrogen occluding alloy is disposed and a second surface located on a side opposite to the first surface. The surface treated steel foil for a current collector is characterized by having an iron-nickel alloy layer that is laminated on at least one surface side of the first surface side and the second surface side on the side opposite to the first surface side of a metallic base material composed of steel foil and that restrains permeation or diffusion of hydrogen in the surface treated steel foil for a current collector, and is characterized in that at least one layer included in the iron-nickel alloy layer has a thickness of not less than 0.5 ?m.
    Type: Application
    Filed: April 28, 2022
    Publication date: July 11, 2024
    Inventors: Keishi KATSURA, Misato UENO, Shinichirou HORIE, Etsuro TSUTSUMI, Satoko HARADA, Toshifumi KOYANAGI, Shunki OBATA, Koh YOSHIOKA
  • Publication number: 20240222645
    Abstract: [Object] To provide a surface treated steel foil for a current collector, the surface treated steel foil having suitable hydrogen barrier properties. [Solving Means] A surface treated steel foil for a current collector, the surface treated steel foil having a first surface and a second surface located on a side opposite to the first surface, includes a base material formed of a steel and an iron-nickel alloy layer that is laminated on the base material on the first surface side and/or the second surface side. The iron-nickel alloy layer contains Fe1Ni1 as an alloy phase. With respect to the surface including the alloy layer, the ratio of the maximum value of diffraction intensity of a Fe1Ni1 (311) plane and the maximum value of diffraction intensity of a Fe(211) plane in X-ray diffraction satisfies the following formula (1): I ? ( Fe 1 ? Ni 1 ( 311 ) ) / I ? ( Fe ( 211 ) ) ? 0.015 .
    Type: Application
    Filed: April 28, 2022
    Publication date: July 4, 2024
    Inventors: Etsuro TSUTSUMI, Misato UENO, Keishi KATSURA, Shinichirou HORIE, Satoko HARADA, Toshifumi KOYANAGI, Shunki OBATA, Koh YOSHIOKA
  • Publication number: 20240213461
    Abstract: A bipolar electrode (100) for a metal hydride battery includes a current collector (10), a negative electrode active material layer (20) provided on a first surface (10A) of the current collector (10), and a positive electrode active material layer (30) provided on a second surface (10B) of the current collector (10). The negative electrode active material layer (20) contains a metal hydride. The current collector (10) includes a steel sheet (13) and a Ni—Fe alloy layer (15) formed on at least one surface of the steel sheet (13).
    Type: Application
    Filed: April 27, 2022
    Publication date: June 27, 2024
    Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, TOYOTA JIDOSHA KABUSHIkI KAISHA
    Inventors: Yuki CHUJO, Tomohiro NAKAMURA, Kyohei MATSUURA, Yutaro KAWABATA, Takayuki HIROSE, Motoaki OKUDA, Takeo OKANISHI, Motoyoshi OKUMURA, Hiroyuki KAIYA, Masashi KODAMA, Daiki TERASHIMA, Masanobu OUCHI, Koh YOSHIOKA, Shinichirou HORIE, Toshifumi KOYANAGI
  • Patent number: 12021243
    Abstract: Provided is a sulfide all-solid battery having an anode current collector of powerful adhesiveness which is difficult to be sulfurized. The sulfide all-solid-state battery including: a cathode layer; an anode layer; and a sulfide solid electrolyte layer disposed between the cathode layer and the anode layer, wherein the anode layer has an anode mixture layer, and an anode current collector on a face of the anode mixture layer, the face being on an opposite side of the sulfide solid electrolyte layer, the anode current collector is electrolytic iron foil that does not substantially contain other elements, and the anode current collector has surface roughness Ra of 0.2 ?m to 0.6 ?m, and surface roughness Rz of 2 ?m to 6 ?m.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: June 25, 2024
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOYO KOHAN CO., LTD.
    Inventors: Hajime Hasegawa, Shigetaka Nagamatsu, Shinichirou Horie, Koh Yoshioka, Toshifumi Koyanagi, Etsuro Tsutsumi, Michio Kawamura, Yuma Yoshizaki
  • Patent number: 12018395
    Abstract: [Object] To provide a roughened nickel-plated material in which the formation unevenness such as generation of the unevenness or grooves in a roughened nickel plated layer is restrained. [Solving Means] A roughened nickel-plated material including a base material that is a rolled material, and a roughened nickel plated layer formed on at least one surface of the base material, in which SRzjis of the surface of the roughened nickel plated layer is equal to or more than 2 ?m, and, letting a maximum height of the roughened nickel plated layer be SRz, a valley region B in a given virtual planer region A as observed at a height position of SRz×0.25 satisfies the following (i). (i) The length of the valley region B in the rolling direction RD of the base material is less than 40 ?m in a direct distance.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: June 25, 2024
    Assignee: TOYO KOHAN CO., LTD.
    Inventors: Shinichirou Horie, Etsuro Tsutsumi, Toshifumi Koyanagi, Shunki Obata, Michio Kawamura, Koh Yoshioka, Naoharu Harada, Tsuyoshi Irie, Yonosuke Yoshii
  • Publication number: 20240120581
    Abstract: The present invention provides steel foil for battery containers, the steel foil being characterized in that the maximum value of the maximum principal strain in uniaxial deformation is not less than 0.25 and the maximum value of the maximum principal strain in planar strain deformation is not less than 0.1. The present invention is able to provide steel foil for battery containers that is capable of restraining cracking of a base material when subjected to a severe forming process for battery containers.
    Type: Application
    Filed: January 27, 2022
    Publication date: April 11, 2024
    Inventors: Nobuhiro IWAMOTO, Yasuyuki IKEDA, Shinichi TAKEMATSU, Shinichirou HORIE, Koh YOSHIOKA
  • Publication number: 20240105960
    Abstract: An electrolytic foil and a battery current collector is provided in which the risk of breakage or tearing during manufacturing presented by reduced thickness can be restrained, and which possess sufficient strength for repeated charging and discharging in a secondary battery. The electrolytic foil and the battery current collector contain a Ni—Fe alloy layer, having a thickness of 1.5 to 10 ?m and having a first surface and a second surface and wherein the value of a three-dimensional surface properties parameter Sv divided by the thickness is equal to or less than 0.5 for the first surface and the second surface.
    Type: Application
    Filed: September 29, 2020
    Publication date: March 28, 2024
    Inventors: Michio KAWAMURA, Shinichiro HORIE, Etsuro TSUTSUMI, Yuma YOSHIZAKI, Koh YOSHIOKA
  • Publication number: 20230387517
    Abstract: A surface-treated steel sheet for a battery container includes a steel sheet, an iron-nickel diffusion layer formed on the steel sheet, and a nickel layer formed on the iron-nickel diffusion layer and constituting the outermost layer. When the Fe intensity and the Ni intensity are continuously measured from the surface of the surface-treated steel sheet for a battery container along the depth direction with a high frequency glow discharge optical emission spectrometric analyzer, the thickness of the iron-nickel diffusion layer being the difference (D2?D1) between the depth (D1) at which the Fe intensity exhibits a first predetermined value and the depth (D2) at which the Ni intensity exhibits a second predetermined value is 0.04 to 0.31 ?m; and the total amount of the nickel contained in the iron-nickel diffusion layer and the nickel contained in the nickel layer is 10.8 to 26.7 g/m2.
    Type: Application
    Filed: August 15, 2023
    Publication date: November 30, 2023
    Inventors: Kota SADAKI, Koh YOSHIOKA
  • Publication number: 20230340685
    Abstract: A roughened plated sheet including a roughened plated layer having a roughened nickel plated layer and a zinc plated layer formed on at least one surface of a metal substrate in this order from the metal substrate side, wherein a ten-point average roughness Rzjis of a surface of the roughened plated layer, according to laser microscope measurement, is 3 ?m or more, and the metal substrate is a steel sheet.
    Type: Application
    Filed: June 28, 2023
    Publication date: October 26, 2023
    Applicant: TOYO KOHAN CO., LTD.
    Inventors: Hiroki YANAGA, Shinichirou HORIE, Etsuro TSUTSUMI, Masashi ICHISHIMA, Toshifumi KOYANAGI, Koh YOSHIOKA
  • Patent number: 11799156
    Abstract: A surface-treated steel sheet for a battery container includes a steel sheet, an iron-nickel diffusion layer formed on the steel sheet, and a nickel layer formed on the iron-nickel diffusion layer and constituting the outermost layer. When the Fe intensity and the Ni intensity are continuously measured from the surface of the surface-treated steel sheet for a battery container along the depth direction with a high frequency glow discharge optical emission spectrometric analyzer, the thickness of the iron-nickel diffusion layer being the difference (D2?D1) between the depth (D1) at which the Fe intensity exhibits a first predetermined value and the depth (D2) at which the Ni intensity exhibits a second predetermined value is 0.04 to 0.31 ?m; and the total amount of the nickel contained in the iron-nickel diffusion layer and the nickel contained in the nickel layer is 10.8 to 26.7 g/m2.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: October 24, 2023
    Assignee: TOYO KOHAN CO., LTD.
    Inventors: Kota Sadaki, Koh Yoshioka
  • Patent number: 11760063
    Abstract: There is provided a roughened nickel-plated sheet having a roughened nickel layer as an outermost surface layer on at least one surface of a metal base material, wherein the brightness L* of the surface of the roughened nickel layer is 30 to 50, the glossiness of 85° of the surface of the roughened nickel layer is 1.5 to 50.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: September 19, 2023
    Assignee: TOYO KOHAN CO., LTD.
    Inventors: Shinichirou Horie, Etsuro Tsutsumi, Toshifumi Koyanagi, Koh Yoshioka
  • Publication number: 20230265575
    Abstract: [Object] An object of the present invention is to provide an electrolytic foil and a battery current collector capable of restraining the risk of breakage and tearing during manufacturing due to reduction in film thickness and further exhibiting sufficient strength and elongation during repetitive charging and discharging of a secondary battery. Solving Means An electrolytic iron foil in which the electrolytic iron foil is less than 20 ?m in thickness, the electrolytic iron foil has a first surface and a second surface, and a value obtained by dividing a three-dimensional surface texture parameter Sv by the thickness is equal to or less than 0.27 in both the first surface and the second surface.
    Type: Application
    Filed: July 15, 2021
    Publication date: August 24, 2023
    Inventors: Shinichirou HORIE, Michio KAWAMURA, Etsuro TSUTSUMI, Yuma YOSHIZAKI, Koh YOSHIOKA