Patents by Inventor Robert T. Freller

Robert T. Freller 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: 4382784
    Abstract: A dental shade guide selector including a color tooth sample, a handle for manipulating the sample in the mouth and a holder for storing the color tooth samples. The color tooth sample includes a frame having a base plate and a rim bordering the plate. A layer of porcelain or the like is fused or otherwise fixidly attached on the plate inside the border of the rim. The plate has a front convex surface and a rear concave surface. The rim has a greater height at the incisor end of the tooth sample than at the gingival end of the tooth sample, so that the porcelain layer is thicker at the incisor end than at the gingival end. A pair of spaced apart feet extend outward from the rear surface of the plate to define a channel (curved) therebetween for receiving the support of the artificial tooth positioned in the mouth.
    Type: Grant
    Filed: July 2, 1980
    Date of Patent: May 10, 1983
    Inventor: Robert T. Freller