Patents by Inventor Osamu Tobita

Osamu Tobita 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).

  • Pierced earring with improved nut
    Patent number: 5669239
    Abstract: A pierced earring includes a pin member provided midway thereof with an engaging groove, and a nut including a cylindrical fastener body having therein a split groove or slit extending in the direction of the length thereof, an engaging ridge formed on an inner peripheral surface thereof and a guide part tapering at one end of the fastener body. Intimate union between the engaging ridge of the cylindrical fastener body and the engaging groove of the pin member is attained by insertion of the pin member through the guide part into the cylindrical fastener body.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: September 23, 1997
    Assignee: Setsuko Ishida
    Inventor: Osamu Tobita