Patents by Inventor Etsuko Kuroda

Etsuko Kuroda 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).

  • Aluminum alloy sheet, method for producing the same, and aluminum alloy container
    Patent number: 7704451
    Abstract: An aluminum alloy sheet contains 0.1% to 0.4% by mass of Cu, 0.5% to 1.5% by mass of Mg, 0.5% to 1.5% by mass of Mn, 0.2% to 0.7% by mass of Fe, and 0.1% to 0.3% by mass of Si. The number density of Al—Mn—Fe—Si-based intermetallic compound having a maximum length of 8 to 15 ?m per unit area is 179 grains/mm2 or less. An oxide film having an average thickness of 30 nm or less is formed on the surface of the aluminum alloy sheet. The arithmetic average roughness Ra of the surface of the aluminum alloy sheet is 0.30 to 0.45 ?m.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: April 27, 2010
    Assignee: Kobe Steel, Ltd.
    Inventors: Kenji Kuroda, Etsuko Kuroda, legal representative, Takashi Inaba
  • Aluminum alloy sheet, method for producing the same, and aluminum alloy container
    Publication number: 20060240270
    Abstract: An aluminum alloy sheet contains 0.1% to 0.4% by mass of Cu, 0.5% to 1.5% by mass of Mg, 0.5% to 1.5% by mass of Mn, 0.2% to 0.7% by mass of Fe, and 0.1% to 0.3% by mass of Si. The number density of Al—Mn—Fe—Si-based intermetallic compound having a maximum length of 8 to 15 ?m per unit area is 179 grains/mm2 or less. An oxide film having an average thickness of 30 nm or less is formed on the surface of the aluminum alloy sheet. The arithmetic average roughness Ra of the surface of the aluminum alloy sheet is 0.30 to 0.45 ?m.
    Type: Application
    Filed: April 20, 2005
    Publication date: October 26, 2006
    Applicant: Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd.)
    Inventors: Kenji Kuroda, Etsuko Kuroda, Takashi Inaba