Patents by Inventor Katsumi OWA

Katsumi OWA 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: 9765223
    Abstract: A coated steel sheet comprises: a steel sheet; a primer coating film which is arranged on the steel sheet and comprises an anti-corrosive pigment and an aggregate composed of primary particles; and a top coating film which is arranged on the primer coating film. The anti-corrosive pigment comprises at least one compound selected from the group consisting of a bivalent tin salt, a trivalent vanadium salt, a tetravalent vanadium salt, a tetravalent molybdenum salt, an oxycarboxylic acid salt, an ascorbic acid, a phosphorous acid salt and a hypophosphorous acid salt.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: September 19, 2017
    Assignee: NISSHIN STEEL CO., LTD.
    Inventors: Shinji Takaoka, Takahide Hayashida, Koichiro Ueda, Yasunori Fujimoto, Naho Kawahara, Katsumi Owa
  • Publication number: 20170216881
    Abstract: This coated steel sheet comprises: a steel sheet; a primer coating film that is arranged on the steel sheet and contains a chromic acid-based rust preventive pigment and aggregate that serves as primary particles, while not containing porous particles; and a top coating film that is arranged on the primer coating film. The aggregate satisfies the following formula (1) and formula (2). D10?0.6T (1) D90<2.0T (2) (In the formulae, D10 represents the 10% particle diameter (?m) of the aggregate in the number-based cumulative particle size distribution; D90 represents the 90% particle diameter (?m) of the aggregate in the number-based cumulative particle size distribution; and T represents the film thickness (?m) of a portion of the primer coating film, in which the aggregate is not present.
    Type: Application
    Filed: December 16, 2014
    Publication date: August 3, 2017
    Inventors: Shinji TAKAOKA, Takahide HAYASHIDA, Koichiro UEDA, Yasunori FUJIMOTO, Naho KAWAHARA, Katsumi OWA
  • Publication number: 20170218497
    Abstract: This colored coated metal sheet comprises a metal sheet and one or more coating films arranged on top of the metal sheet, and has a specular gloss at 60° of 60-100 and an L value of 70 or less in the Hunter Lab color system. The outermost coating film among the coating films is configured of a polyester, and contains particles that contain a coloring pigment. The particles have a D90 of from 0.05 ?m to 0.70 ?m, and the content of the particles in the outermost coating film is from 10% by mass to 60% by mass.
    Type: Application
    Filed: July 22, 2014
    Publication date: August 3, 2017
    Inventors: Katsumi OWA, Naho KAWAHARA, Koichiro UEDA
  • Publication number: 20170015837
    Abstract: A coated steel sheet comprises: a steel sheet; a primer coating film which is arranged on the steel sheet and comprises an anti-corrosive pigment and an aggregate composed of primary particles; and a top coating film which is arranged on the primer coating film. The anti-corrosive pigment comprises at least one compound selected from the group consisting of a bivalent tin salt, a trivalent vanadium salt, a tetravalent vanadium salt, a tetravalent molybdenum salt, an oxycarboxylic acid salt, an ascorbic acid, a phosphorous acid salt and a hypophosphorous acid salt.
    Type: Application
    Filed: March 24, 2014
    Publication date: January 19, 2017
    Inventors: Shinji TAKAOKA, Takahide HAYASHIDA, Koichiro UEDA, Yasunori FUJIMOTO, Naho KAWAHARA, Katsumi OWA