Patents by Inventor Minoru Ohtake

Minoru Ohtake 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).

  • Die-casting aluminum base alloy for a bearing of ball joint apparatus, heat treatment thereof and ball joint apparatus using the same
    Patent number: 5954897
    Abstract: A die-casting aluminum base alloy consisting of, by weight %,Zn:10.about.25%, Si:6.about.10%,Cu:0.5.about.3.0%, Mn:0.1.about.0.5%,Mg:0.02.about.0.08%, Fe:less than 1.3%,and the rest of Al and unavoidable impurity.This alloy can be heat treated at low temperature from 260.degree. C. to 450.degree. C., at which steel parts inserted in this alloy will not deteriorate.This alloy has excellent mechanical strength, stress corrosion cracking resistance and wear resistance, and can be used for ball joints apparatus such as a stabilizer conrod for automobile.
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: September 21, 1999
    Assignee: Nisso Metalochemical Co., Ltd.
    Inventors: Minoru Ohtake, Yutaka Fujiwara