Patents by Inventor Yoshino Yousuke

Yoshino Yousuke 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).

  • Expansion anchor
    Patent number: 5116176
    Abstract: An expansion anchor capable of being expanded by thrusting a lock plug into a contacted portion to spread a clamp member having acutely angular peripheral edges. When the anchor is expanded within a hole in a rigid material such as concrete, the angular edges of the clamp member bite into the rigid material, so that the anchor is no longer removable from the rigid material.
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: May 26, 1992
    Assignee: Yoshino Seiki Inc.
    Inventor: Yoshino Yousuke