Patents by Inventor Yasuaki KAWAMURA

Yasuaki KAWAMURA 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: 11028276
    Abstract: Provided are a surface-treated metal sheet excellent in the adhesiveness to a coating treatment film and weldability and a coated member.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: June 8, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yasuaki Kawamura, Koji Akioka, Akihiro Sengoku, Yoichiro Mori
  • Publication number: 20210154978
    Abstract: A metal-carbon fiber reinforced plastic composite comprising a metal member of a ferrous material or ferrous alloy, a resin layer provided on at least one surface of the metal member and including a thermosetting resin, and carbon fiber reinforced plastic provided on a surface of the resin layer and including a carbon fiber material and a matrix resin having thermoplasticity, an indentation elastic modulus at 160 to 180° C. of the resin layer being higher than an indentation elastic modulus at 160 to 180° C. of the matrix resin.
    Type: Application
    Filed: April 2, 2019
    Publication date: May 27, 2021
    Applicant: Nippon Steel Corporation
    Inventors: Masumi KOORI, Yasuaki KAWAMURA, Kohei UEDA
  • Patent number: 10987695
    Abstract: A hot-dip zinc-based plated steel sheet includes: a base steel sheet that is a metal substrate; a hot-dip zinc-based plating layer provided on the base steel sheet; and a surface treatment layer formed on at least one surface of the hot-dip zinc-based plating layer, in which the surface treatment layer contains more than or equal to 0.1 g/m2 and less than or equal to 1.2 g/m2 of granular oxide per one surface on a metal basis in which, in a temperature range of 900 to 1300 K, standard free energy of formation (?G0) of oxide is smaller than standard free energy of formation (?G0Zn) of zinc oxide and larger than standard free energy of formation (?G0Al) of aluminum oxide at an identical temperature, and the granular oxide has a particle size of more than or equal to 3 nm and less than or equal to 100 nm.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: April 27, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Koji Akioka, Yasuaki Kawamura, Akihiro Sengoku
  • Publication number: 20210114350
    Abstract: To provide a metal-carbon fiber reinforced plastic material (CFRP) composite that has excellent adhesion and adhesion durability at a member interface and a method of producing a metal-CFRP composite. The metal-CFRP composite according to the present invention includes: a metal member; a CFRP layer; and one or two layers of coating layers provided between the metal member and the CFRP layer. In the case where the coating layer consists of one layer, the coating layer is a coating layer containing an isocyanate group, and the matrix resin contains a phenoxy resin as a main component thereof, contains an epoxy group, and has bonds represented in (a structural formula 1) in the vicinity of an interface between the CFRP layer and the coating layer.
    Type: Application
    Filed: June 14, 2019
    Publication date: April 22, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yasuaki KAWAMURA, Kohei UEDA, Masumi KOORI
  • Publication number: 20210024705
    Abstract: A metal-carbon fiber reinforced plastic composite comprising a metal member of a ferrous material or ferrous alloy, a resin layer provided on at least one surface of the metal member and including a thermoplastic resin, and carbon fiber reinforced plastic provided on a surface of the resin layer and including a carbon fiber material and a matrix resin having thermoplasticity, a glass transition point Tg1 or melting point Tm1 of the resin layer being higher than a glass transition point Tg2 or melting point Tm2 of the carbon fiber reinforced plastic, in which metal-carbon fiber reinforced plastic composite, an AC impedance at a frequency 1 Hz when immersing the metal-carbon fiber reinforced plastic composite in an aqueous solution containing sodium chloride in 5 mass % is 1×107? or more.
    Type: Application
    Filed: April 2, 2019
    Publication date: January 28, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Masumi KOORI, Yasuaki KAWAMURA, Kohei UEDA
  • Patent number: 10851465
    Abstract: [Object] To provide a zinc-based plated steel sheet excellent in coating film adhesiveness after hot pressing more conveniently. [Solution] A zinc-based plated steel sheet according to the present invention comprises: a zinc-based plated steel sheet that is a base metal; and a surface treatment layer formed on at least one surface of the zinc-based plated steel sheet, in which the surface treatment layer contains one or more oxides selected from titanium oxide, nickel oxide, and tin(IV) oxide each having a particle size of more than or equal to 2 nm and less than or equal to 500 nm, in a range of more than or equal to 0.2 g/m2 and less than or equal to 2 g/m2 per one surface.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: December 1, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yasuaki Kawamura, Koji Akioka, Akihiro Sengoku
  • Patent number: 10549506
    Abstract: [Object] To provide a hot-dip zinc-based plated steel sheet excellent in coating film adhesiveness after hot pressing more conveniently. [Solution] A hot-dip zinc-based plated steel sheet according to the present invention includes: a hot-dip zinc-based plated steel sheet that is a base metal; and a surface treatment layer formed on at least one surface of the hot-dip zinc-based plated steel sheet, in which the surface treatment layer contains one or more oxides selected from zirconia, lanthanum oxide, cerium oxide, and neodymium oxide each having a particle size of more than or equal to 5 nm and less than or equal to 500 nm, in a range of more than or equal to 0.2 g/m2 and less than or equal to 2 g/m2 per one surface.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: February 4, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yasuaki Kawamura, Koji Akioka, Akihiro Sengoku
  • Publication number: 20190330478
    Abstract: A coated steel sheet has a coating film on at least one side of a plated steel sheet. The coating film contains a binder resin, non-oxide ceramic particles containing V (excluding VC particles), and doped zinc oxide particles. The respective contents of the non-oxide ceramic particles containing V and the doped zinc oxide particles relative to the coating film satisfy the expressions: [(1) CZn?10.0, (2) CV?0.5·CZn, (3) CV?70?CZn, (4) CV?0.125·CZn, and (5) CV?2.0], where CV represents the content (mass %) of the non-oxide ceramic particles containing V, and CZn represents the content (mass %) of the doped zinc oxide particles. The coated steel sheet is excellent in both corrosion resistance before electrodeposition coating, and weldability.
    Type: Application
    Filed: November 17, 2016
    Publication date: October 31, 2019
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yasuaki KAWAMURA, Yoichiro MORI, Ikuro YAMAOKA
  • Publication number: 20180112084
    Abstract: Provided are a surface-treated metal sheet excellent in the adhesiveness to a coating treatment film and weldability and a coated member.
    Type: Application
    Filed: March 30, 2016
    Publication date: April 26, 2018
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yasuaki KAWAMURA, Koji AKIOKA, Akihiro SENGOKU, Yoichiro MORI
  • Publication number: 20180079174
    Abstract: [Object] To provide a hot-dip zinc-based plated steel sheet excellent in coating film adhesiveness after hot pressing more conveniently. [Solution] A hot-dip zinc-based plated steel sheet according to the present invention includes: a hot-dip zinc-based plated steel sheet that is a base metal; and a surface treatment layer formed on at least one surface of the hot-dip zinc-based plated steel sheet, in which the surface treatment layer contains one or more oxides selected from zirconia, lanthanum oxide, cerium oxide, and neodymium oxide each having a particle size of more than or equal to 5 nm and less than or equal to 500 nm, in a range of more than or equal to 0.2 g/m2 and less than or equal to 2 g/m2 per one surface.
    Type: Application
    Filed: March 31, 2016
    Publication date: March 22, 2018
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yasuaki KAWAMURA, Koji AKIOKA, Akihiro SENGOKU
  • Publication number: 20180050367
    Abstract: [Object] To provide a hot-dip zinc-based plated steel sheet which suppresses excessive production of zinc oxides on an outer layer after hot pressing more conveniently and is excellent in corrosion resistance at an uncoated portion. [Solution] A hot-dip zinc-based plated steel sheet according to the present invention includes: a base steel sheet that is a metal substrate; a hot-dip zinc-based plating layer provided on the base steel sheet; and a surface treatment layer formed on at least one surface of the hot-dip zinc-based plating layer, in which the surface treatment layer contains more than or equal to 0.1 g/m2 and less than or equal to 1.
    Type: Application
    Filed: March 31, 2016
    Publication date: February 22, 2018
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Koji AKIOKA, Yasuaki KAWAMURA, Akihiro SENGOKU
  • Publication number: 20180044809
    Abstract: [Object] To provide a zinc-based plated steel sheet excellent in coating film adhesiveness after hot pressing more conveniently. [Solution] A zinc-based plated steel sheet according to the present invention comprises: a zinc-based plated steel sheet that is a base metal; and a surface treatment layer formed on at least one surface of the zinc-based plated steel sheet, in which the surface treatment layer contains one or more oxides selected from titanium oxide, nickel oxide, and tin(IV) oxide each having a particle size of more than or equal to 2 nm and less than or equal to 500 nm, in a range of more than or equal to 0.2 g/m2 and less than or equal to 2 g/m2 per one surface.
    Type: Application
    Filed: March 31, 2016
    Publication date: February 15, 2018
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yasuaki KAWAMURA, Koji AKIOKA, Akihiro SENGOKU
  • Publication number: 20180030582
    Abstract: [Object] To provide a zinc-based plated steel sheet excellent in coating adhesiveness after hot pressing more conveniently. [Solution] A zinc-based plated steel sheet according to the present invention includes: a zinc-based plated steel sheet that is a base metal; and a surface treatment layer formed on at least one surface of the zinc-based plated steel sheet and containing one or more magnesium compounds. The amount of the one or more magnesium compounds contained is not less than 0.2 g/m2 and not more than 5.0 g/m2 per one surface on a magnesium oxide basis.
    Type: Application
    Filed: March 31, 2016
    Publication date: February 1, 2018
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Akihiro SENGOKU, Koji AKIOKA, Yasuaki KAWAMURA