Patents by Inventor Motohmi Urabe

Motohmi Urabe 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 of producing aluminum alloy castings and piston made of aluminum alloy
    Patent number: 4966221
    Abstract: Porous material of metal is held in a die and molten aluminum alloy is introduced into the die to surround the porous material. Thus, high-pressure squeeze casting is accomplished under an applied pressure of not lower than 400 Kg/cm.sup.2 to form an aluminum alloy casting stock with the porous material cast therein. The casting stock is heated to and maintained at 450.degree. to 550.degree. C. for 1 to 10 hours, and an intermetallic compound layer of aluminum and the metal of the porous material is thereby formed on the boundary between the porous material and the aluminum alloy.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: October 30, 1990
    Assignee: Mazda Motor Corporation
    Inventors: Shunzo Takasuga, Yukihiro Sugimoto, Keiichiro Noguchi, Motohmi Urabe