Patents by Inventor Yoshiitsu Tominaga

Yoshiitsu Tominaga 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).

  • Pre-coated steel sheets and process for production thereof
    Patent number: 4370387
    Abstract: A precoated steel sheet and a process for production thereof is provided which comprises coating a resin composition comprising mainly an acryloxyloxy- or methacryloyloxy-terminated polyester on the surface of a steel sheet, said acryloyloxy- or methacryloyloxy-terminated polyester being prepared by reacting a hydroxy-terminated polyester comprising (a) a dicarboxylic acid unit containing about 10 to about 80 mol % of a terephthalic acid unit and (b) dihydric alcohol unit containing about 30 mol % or more of a dihydric alcohol unit containing 3 or more carbon atoms, and having a number average molecular weight of about 400 to about 5,000, with acrylic acid or methacrylic acid, and curing the thus-coated resin composition by irradiating the sheet with an electron beam.
    Type: Grant
    Filed: March 19, 1981
    Date of Patent: January 25, 1983
    Assignees: Toagosei Chemical Industry Co., Ltd., Nippon Steel Corporation
    Inventors: Nagaharu Ueno, Joji Oka, Hidejiro Asano, Takahisa Ogasawara, Kiyokazu Mizutani, Yoshiitsu Tominaga