Patents by Inventor Yoshio Urai

Yoshio Urai 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).

  • Aluminium alloy having an excellent forgiability
    Patent number: 4889557
    Abstract: An aluminium alloy made of consolidated rapid-quenched aluminium alloy powder by using an improved metallurgical method basically comprises, by weight percent, less than 30% silicone, less than 8% iron, less than 7% copper and less than 0.2% oxygen, the balance being substantially aluminium. The consolidated rapid-quenched aluminium alloy powder has features that it contains less than 0.2% oxygen, and the material made from the rapid-quenched aluminium alloy powder has a high limit compressibility factor, rate of reduction and tensile strength. Thus the aluminium alloy material obtained is suitable for structural members such as pistons for internal combustion engines.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: December 26, 1989
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yasuo Iwata, Shigenori Mae, Yoshio Urai, Takayuki Tsunoda