Patents by Inventor Joseph G. Shafer

Joseph G. Shafer 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: 5660546
    Abstract: A home denture cleaning kit for cleaning dentures. The kit includes at least a one year's supply of dental pumice, at least a one year supply of tin oxide and an electric driven rotating brush. In a preferred embodiment the bristles of the brush are at least 1/2 inch long and no longer than about 1 1/4 inch and are aligned generally parallel to the axis of rotation of the brush. Dentures are cleaned by mixing about one gram of pumice with an equal quantity of water to form a paste which is applied to the dentures. The rotating brush is then used to brush the pumice-water paste against the denture material to remove film and surface stains such as those due to coffee and tea. After the teeth are cleaned, approximately 1/8 gram of tin oxide powder is mixed with an equal quantity of water and applied to the teeth portion of the dentures. The rotating buffing wheel is then used to buff the tin-oxide paste against the dentures in order to produce a shine on the dentures.
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: August 26, 1997
    Inventor: Joseph G. Shafer
  • Patent number: D323559
    Type: Grant
    Filed: March 21, 1989
    Date of Patent: January 28, 1992
    Assignee: Joseph G. Shafer
    Inventor: Joseph G. Shafer