Patents by Inventor Hideo Okayasu

Hideo Okayasu 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).

  • Prick-preventing shoe
    Patent number: 5003709
    Abstract: Herein disclosed is a prick-preventing shoe, in which is sandwiched between a grounding sole and an inner sole a prick-preventing metallic core shaped to match the shape of the grounding sole and having at least its portion made of a sheet of an amorphous metal. The prick-preventing shoe has its prick prevention and flexibility compatible with each other so that it is advantageous to enjoy the spongy step accompanied by the bendability.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: April 2, 1991
    Assignee: Rikio Co., Ltd.
    Inventors: Kenji Okayasu, Hideo Okayasu