Patents by Inventor Katashi Katsumata

Katashi Katsumata 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).

  • Method for manufacturing heat exchange vehicle
    Patent number: 4718482
    Abstract: A method for manufacturing a novel heat exchanging vehicle comprising the steps of forming an inorganic surface layer over a cold rolled, aluminum or aluminum alloy sheet; treating the inorganic surface layer with a phosphoric compound solution; annealing the sheet; and forming the sheet into a predetermined shape. The resulting heat exchanging vehicle such as a fin has a good wettability and a high corrosion resistance to white rust based on the uniformity of the said surface layer.
    Type: Grant
    Filed: August 19, 1986
    Date of Patent: January 12, 1988
    Assignee: Mitsubishi Aluminum Kabushiki Kaisha
    Inventors: Tetsuji Iwama, Katashi Katsumata, Hajime Kudo, Yo Takeuchi
  • Aluminum alloy excellent in high-temperature sagging resistance and sacrificial anode property
    Patent number: 4150980
    Abstract: An aluminum alloy excellent in the high-temperature sagging resistance and the sacrificial anode property, which consists essentially of, in weight percentage:Zinc: from 0.5 to 8.0%,Manganese: from 0.5 to 1.5%, andThe balance aluminum and incidental impurities; said alloy including an aluminum alloy also containing zirconium of from 0.01 to 0.5% in weight percentage. Said alloys are particularly adapted to be used as fin materials for tubes in a heat exchanger such as a radiator and a condenser.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: April 24, 1979
    Assignee: Mitsubishi Aluminum Kabushiki Kaisha
    Inventors: Shigetake Imaizumi, Kazuo Yamada, Katashi Katsumata