Patents Assigned to Toyo Kohan Co., Ltd.
  • 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: 12199293
    Abstract: A surface-treated steel sheet for a battery container, including 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, wherein 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 between the depth at which the Fe intensity exhibits a first predetermined value and the depth 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 4.4 g/m2 or more and less than 10.8 g/m2.
    Type: Grant
    Filed: September 6, 2023
    Date of Patent: January 14, 2025
    Assignee: TOYO KOHAN CO., LTD.
    Inventors: Kengo Asada, Masao Suda, Kota Sadaki, Hideyuki Minagi
  • 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
  • Patent number: 12163243
    Abstract: A surface-treated steel sheet including a tin-plated steel sheet having a tin plating on a steel sheet; a tin oxide layer formed on the tin-plated steel sheet and containing tin oxide as a main component; a composite oxide layer formed on the tin oxide layer and containing phosphoric acid and aluminum as main components; and an aluminum-oxygen compound layer formed on the composite oxide layer and containing an aluminum-oxygen compound as a main component, wherein the tin oxide layer has a thickness of 8 to 20 nm.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: December 10, 2024
    Assignee: TOYO KOHAN CO., LTD.
    Inventors: Naomi Taguchi, Akihiro Yoshida, Kenji Yanada
  • 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
  • Publication number: 20240372109
    Abstract: Provided is a surface-treated metal sheet for batteries, the surface-treated metal sheet comprising a base material which is a metal sheet based on iron or nickel, and a nickel-tin alloy layer on at least one side of the metal sheet.
    Type: Application
    Filed: September 1, 2022
    Publication date: November 7, 2024
    Applicant: TOYO KOHAN CO., LTD.
    Inventors: Michio KAWAMURA, Kaori UEHARA, Etsuro TSUTSUMI, Shinichirou HORIE, Daisuke MATSUSHIGE
  • Patent number: 12122122
    Abstract: [Problem] To provide: a resin-coated metallic plate which cannot undergo the occurrence of a retort brushing phenomenon (the formation of white spots) or the delamination of a film under retort sterilization treatment conditions; and others. [Solution] A resin-coated metallic plate having a resin layer (A) and a resin layer (B) is characterized in that the resin layer (A) contains 50 to 80 wt % of a polyethylene terephthalate-based resin (I) and 20 to 50 wt % of a polybutylene terephthalate-based resin (II), wherein the resin layer (B) contains 50 to 80 wt % of a polyethylene terephthalate-based resin (III) and 20 to 50 wt % of a polybutylene terephthalate-based resin (II), the polyethylene terephthalate-based resin (I) has a melting point of 210 to 230° C. inclusive, the polybutylene terephthalate-based resin (II) has a melting point of 215 to 225° C. inclusive, and the polyethylene terephthalate-based resin (III) has a melting point of higher than 230° C. and 205° C. or lower.
    Type: Grant
    Filed: June 23, 2018
    Date of Patent: October 22, 2024
    Assignees: TOYO SEIKAN CO., LTD., TOYO KOHAN CO., LTD.
    Inventors: Yuuto Ooshima, Masami Suenaga, Satoshi Kawamura, Yuji Funagi, Shiori Adachi, Shigeya Takahashi, Yasuhiro Yukawa
  • 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
  • Patent number: 12070923
    Abstract: It is an object to provide a substrate for epitaxial growth having a metal base material laminated with a copper layer. On a surface of the copper layer, an area occupied by crystal grains having crystal orientations other than a (200) plane present within 3 ?m from the surface can be less than 1.5%. A surface roughness along a same direction as a rolling direction per unit length of 60 ?m when measured by AFM can be Ra1<10 nm.
    Type: Grant
    Filed: November 10, 2022
    Date of Patent: August 27, 2024
    Assignees: TOYO KOHAN CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Teppei Kurokawa, Yusuke Hashimoto, Hironao Okayama
  • Patent number: 12049060
    Abstract: The present invention provides a multilayered polyester resin-coated metal sheet having a metal substrate, a lower layer formed on at least one side of the metal substrate and made from a polyester resin (A) modified with 2 to 30 mol % of a first copolymerizable component, and an upper layer that is formed on the lower layer and that contains a polyester resin (B) and a soft component (C) incompatible with the polyester resin (B), the soft component (C) being contained at a content of 2 to 50 mass % when the polyester resin (B) and the soft component (C) are assumed to amount to 100 mass % in total.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: July 30, 2024
    Assignee: TOYO KOHAN CO., LTD.
    Inventors: Satoshi Kawamura, Yuto Sato, Yoshimi Ito
  • Publication number: 20240210327
    Abstract: The problem solved by the present invention is to provide a pinhole detection device with an improved accuracy of detecting pinholes. The detection unit of the pinhole detection device includes a plurality of optical fibers that transmit light that has passed through the object to be inspected. The plurality of optical fibers are arranged side by side while facing a light source. When a maximum detectable angle at which the pinhole with respect to an optical axis of the light source is detectable is defined as ?, a maximum angle of incidence of light that can be transmitted by the optical fiber with respect to the optical axis of the light source is set in a range of ?+0° to ?+5°.
    Type: Application
    Filed: March 31, 2022
    Publication date: June 27, 2024
    Applicant: TOYO KOHAN CO., LTD.
    Inventors: Ryou BABASAKI, Kaoru IMASHIGE, Katsunari MIYAKE
  • 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
  • Patent number: 11999131
    Abstract: The present invention is intended to provide a roll-bonded laminate, in which an ultrathin metal layer is laminated on another metal without generation of wrinkles, cracks and the like. A roll-bonded laminate formed by lamination of at least three layers, which comprises a peelable carrier layer 10, an ultrathin metal layer 20 and a metallic foil 30, wherein the thickness of the ultrathin metal layer 20 is 0.5 ?m or more and 20 ?m or less.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: June 4, 2024
    Assignee: Toyo Kohan Co., Ltd.
    Inventor: Yusuke Hashimoto
  • Patent number: 11939693
    Abstract: There is provided a surface-treated steel sheet (1) comprising: a tin-plated steel sheet (10) obtained by tin-plating a steel sheet (11); a phosphate compound layer (20) containing tin phosphate formed on the tin-plated steel sheet (10); and an aluminum-oxygen compound layer (30) on the phosphate compound layer (20), a main constituent of the aluminum-oxygen compound layer (30) being an aluminum-oxygen compound; wherein, when the 3d5/2 spectrum of tin in the aluminum-oxygen compound layer (30) is determined using an X-ray photoelectron spectroscopy, the ratio of the integration value of the profile derived from tin oxide to the integration value of the profile derived from tin phosphate (tin oxide/tin phosphate) is 6.9 or more.
    Type: Grant
    Filed: June 18, 2021
    Date of Patent: March 26, 2024
    Assignee: TOYO KOHAN CO., LTD.
    Inventors: Kunihiro Yoshimura, Masanobu Matsubara, Marie Sasaki, Akihiro Yoshida, Kenji Yanada, Munemitsu Hirotsu
  • Patent number: 11878363
    Abstract: It is an object of the present invention to provide a roll-bonded laminate controlled in warping and a method for producing the same. The method produces the roll-bonded laminate having a two-layer structure of a first metal layer and a second metal layer, by roll-bonding a first metal plate and a second metal plate, wherein the surface hardness Hv of the first metal plate is lower than the surface hardness Hv of the second metal plate; and the method comprises roll-bonding so as to satisfy the following expression (1): 0<(?L1/?L2)/T?38??(1) wherein ?L1 (mm) represents an elongation amount of the first metal layer with respect to the first metal plate; ?L2 (mm) represents an elongation amount of the second metal layer with respect to the second metal plate; and T (mm) represents the total thickness of the roll-bonded laminate.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: January 23, 2024
    Assignee: Toyo Kohan Co., Ltd.
    Inventors: Takafumi Hatakeda, Yusuke Hashimoto, Teppei Kurokawa
  • Patent number: 11840045
    Abstract: This invention provides a relatively thick roll-bonded laminate that exhibits a high Erichsen value and excellent molding workability. Such roll-bonded laminate is composed of a stainless steel layer and a non-stainless steel metal layer, and it is characterized in that thickness T is 0.2 mm to 3 mm and a correlation between a proportion PSUS of thickness TSUS of the stainless steel layer relative to thickness T and a half width FWHM200 of a peak exhibiting a crystal plane orientation (200) determined by X-ray diffraction analysis of the stainless steel layer side satisfies the correlation represented by the formula: FWHM200?0.0057PSUS+0.4.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: December 12, 2023
    Assignee: Toyo Kohan Co., Ltd.
    Inventors: Yusuke Hashimoto, Kota Sadaki, Teppei Kurokawa, Takashi Koshiro, Takafumi Hatakeda
  • Patent number: 11824212
    Abstract: A surface-treated steel sheet for a battery container, including 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, wherein 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 between the depth at which the Fe intensity exhibits a first predetermined value and the depth 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 4.4 g/m2 or more and less than 10.8 g/m2.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: November 21, 2023
    Assignee: TOYO KOHAN CO., LTD.
    Inventors: Kengo Asada, Masao Suda, Kota Sadaki, Hideyuki Minagi
  • 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