Patents by Inventor Tsugio Akai

Tsugio Akai 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).

  • Fiber reinforced metal type composite material with high purity aluminum alloy containing magnesium as matrix metal
    Patent number: 4450207
    Abstract: A fiber reinforced metal type composite material is composed essentially of a mass of reinforcing fibers intimately compounded with a matrix metal. The reinforcing fibers are either alumina fibers, carbon fibers, or a mixture thereof. The matrix metal is an alloy consisting essentially of between about 0.5% and about 4.5% magnesium, less than about 0.2% each of copper and titanium, less than about 0.5% each of silicon, zinc, iron, and manganese, and the remainder aluminum. Preferably, the amount of magnesium is between about 0.7% and about 4.5%, and even more preferably it is between about 1.0% and about 4.0%.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: May 22, 1984
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tadashi Donomoto, Atsuo Tanaka, Yoshiaki Tatematsu, Tsugio Akai