Patents by Inventor Masayoshi Ogaya

Masayoshi Ogaya 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).

  • Process for manufacturing ferritic stainless steel sheet having good formability, surface appearance and corrosion resistance
    Patent number: 4374683
    Abstract: A ferritic stainless steel containing 12.00-25.00% of Cr, 0.1-2.0% of Cu and 0.2-2.0% of Nb with sulfur being restricted to not greater than 0.02%, preferably not greater than 0.005% is hot rolled with a finishing temperature of 850.degree. C. or less, which is lower than the usual finishing temperature, and the resulting hot rolled steel strip is annealed at a relatively high temperature of 950.degree.-1050.degree. C. The resulting cold rolled steel sheet, though it is less expensive, possesses good formability, ridging resistance, surface appearance and corrosion resistance, and is particularly suitable for making ornamental articles, such as automotive mouldings.
    Type: Grant
    Filed: February 24, 1981
    Date of Patent: February 22, 1983
    Assignees: Sumitomo Metal Industries, Ltd., Nippon Stainless Steel Co., Ltd.
    Inventors: Masao Koike, Yutaka Hayashi, Masayoshi Ogaya