Patents by Inventor Shigetada Yoneyama

Shigetada Yoneyama 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).

  • Throw away insert and end mills
    Patent number: 4252480
    Abstract: Improved throw away insert and end mills suitable for use with such an insert. The throw away insert has cutting edges which have a convex arcuate shape and have an identical radius of curvature larger than that of the circle circumscribing it at the noses thereof.
    Type: Grant
    Filed: May 3, 1979
    Date of Patent: February 24, 1981
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Tsuyoshi Mizuno, Shigetada Yoneyama