Patents by Inventor Tien H. Shen

Tien H. Shen 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).

  • Patent number: 5662750
    Abstract: A method of producing an aluminum article comprising the steps of: (a) providing stock including an aluminum alloy comprising about 1.0 to 1.3 wt.% silicon, about 0.40 to 0.80 wt.% magnesium, about 0.02 to 0.20 wt.% of an element selected from the group consisting of manganese and chromium, not more than about 0.70 wt.% copper, the remainder substantially aluminum, incidental elements and impurities; (b) hot rolling the stock at a temperature ranging from about 980.degree. to 1025.degree. F. to obtain a gauge thickness ranging from about 0.20 to 0.10 inches; (c) solution heat treating at a temperature ranging from about 1000.degree. to 1030.degree. F. for a time period of about 3 to 10 minutes; (d) rapid quenching at a rate of about 500.degree. F./second to a threshold temperature of about 200.degree. F. for a time period ranging from about 2 to 10 minutes; (e) cooling to room temperature at a rate above 1.8.degree. F.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: September 2, 1997
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventor: Tien H. Shen