Patents by Inventor Keita KATSUMARU

Keita KATSUMARU 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).

  • Plated steel
    Patent number: 11078590
    Abstract: A plated steel includes: a steel; a zinc based electroplated layer formed on a surface of the steel; and an organic resin coating layer formed on a surface of the zinc based electroplated layer, in which the surface of the zinc based electroplated layer has hairline extending in a predetermined direction, Ra (ML) measured on the surface of the zinc based electroplated layer is 0.10 to 0.70 ?m, on the surface of the zinc based electroplated layer, a peak number PPI measured in a hairline orthogonal direction with a reference level of 10 ?inch satisfies PPI?350×Ra (MC) with respect to Ra (MC), on a surface of the organic resin coating layer, Ra (CC) satisfies Ra (CC)/Ra (CL)?1.10 with respect to Ra (CL), and Ra (CC) satisfies Ra (CC)<Ra (MC) with respect to Ra (MC).
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: August 3, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takashi Futaba, Kiyokazu Ishizuka, Fumio Shibao, Ikuo Kikuchi, Hidetoshi Shindo, Hiroaki Uramoto, Keita Katsumaru
  • PLATED STEEL
    Publication number: 20200141019
    Abstract: A plated steel includes: a steel; a zinc based electroplated layer formed on a surface of the steel; and an organic resin coating layer formed on a surface of the zinc based electroplated layer, in which the surface of the zinc based electroplated layer has hairline extending in a predetermined direction, Ra (ML) measured on the surface of the zinc based electroplated layer is 0.10 to 0.70 ?m, on the surface of the zinc based electroplated layer, a peak number PPI measured in a hairline orthogonal direction with a reference level of 10 ?inch satisfies PPI?350×Ra (MC) with respect to Ra (MC), on a surface of the organic resin coating layer, Ra (CC) satisfies Ra (CC)/Ra (CL)?1.10 with respect to Ra (CL), and Ra (CC) satisfies Ra (CC)<Ra (MC) with respect to Ra (MC).
    Type: Application
    Filed: June 15, 2018
    Publication date: May 7, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Takashi FUTABA, Kiyokazu ISHIZUKA, Fumio SHIBAO, Ikuo KIKUCHI, Hidetoshi SHINDO, Hiroaki URAMOTO, Keita KATSUMARU