Patents by Inventor Tokushiro Hirano

Tokushiro Hirano 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).

  • Fiber-reinforced plastic material comprising stacked woven fabrics of differential weave in a plastic matrix
    Patent number: 5462791
    Abstract: There are disclosed fiber-reinforced plastic materials with a composite structure including at least two kinds of fibers as reinforcing materials, which have reciprocal thermal expansion and contraction properties, and a synthetic resin as a matrix. The fiber-reinforced plastic materials of the present invention have the excellent advantages of exhibiting an extremely small degree of deformation caused by their thermal contraction, even when used under cryogenic circumstances.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: October 31, 1995
    Assignees: Toyo Boseki Kabushiki Kaisha, Toshiba Corporation
    Inventors: Toshihiro Kashima, Masayuki Hoshino, Masachika Nakano, Tokushiro Hirano