Patents by Inventor Hirokazu Wantanabe

Hirokazu Wantanabe 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).

  • Patent number: 5212851
    Abstract: A snap-fit button comprising: a button body having on its front surface an ornamental; a snap member; a caulking member with which the button body and snap member are adapted to be caulked; a locking ring having on and along its outer peripheral portion a ridge and attached to a flange of the caulking member; a socket having an aperture for receiving the locking ring and having a taper diverging from an edge of the aperture toward a back surface of the button body, the socket being secured to the back surface of the button body; and a ring-shape spring disposed in the socket for resiliently engaging the locking ring.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: May 25, 1993
    Assignee: Yoshida Kogyo K.K.
    Inventor: Hirokazu Wantanabe