Patents Assigned to Showa Aluminium Kabushiki Kaisha
  • Aluminum alloy foils for cathodes of electrolytic capacitors
    Patent number: 4401489
    Abstract: An aluminum alloy foil useful for the cathodes of electrolytic capacitors is prepared from an aluminum alloy comprising 0.03 to 0.5% of copper and 0.002 to 0.05% of titanium.
    Type: Grant
    Filed: April 29, 1982
    Date of Patent: August 30, 1983
    Assignee: Showa Aluminium Kabushiki Kaisha
    Inventors: Kozo Arai, Takao Suzuki, Syozo Umetsu
  • Process of preparing aluminum of high purity
    Patent number: 4373950
    Abstract: In melting aluminum containing impurities which form a eutectic with the aluminum and solidifying the molten aluminum by cooling, the aluminum is purified by breaking down dendrites extending from the liquid-solid interface into the liquid phase to release impurities from between the dendrites or between the branches of the dendrites, and dispersing the released impurities in the entire body of the liquid phase.
    Type: Grant
    Filed: October 8, 1980
    Date of Patent: February 15, 1983
    Assignee: Showa Aluminium Kabushiki Kaisha
    Inventors: Hideo Shingu, Kozo Arai, Ryotatsu Ootsuka
  • Stop-weld composition and method for producing aluminium tube in sheet utilizing the same
    Patent number: 3994753
    Abstract: A stop-weld composition for forming a corrosion inhibiting layer on the internal surface of aluminium tube in sheet comprises 2.0 to 50.0% of boron nitride, 0.2 to 10.0% of bentonite, 5.0 to 50.0% of finely divided zinc and the balance solvent.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: November 30, 1976
    Assignee: Showa Aluminium Kabushiki Kaisha
    Inventors: Tomiyoshi Kanai, Takeshi Katohgi, Hitoshi Akiyoshi