Patents by Inventor Earl D. Dietz

Earl D. Dietz 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: 3975203
    Abstract: A filler composition for tooth filling and facing compositions comprising (1) a finely divided inorganic material, and (2) a barium aluminosilicate glass or other glass having an effective amount of radiopaque oxide that renders the resultant glass radiopaque to X-rays used by dentists. The filler composition is mixed with an organic polymer such as methyl methacrylate to provide a tooth filling and facing composition having an outstanding combination of desirable properties including a color resembling that of natural teeth, a suitable index of refraction, hardness, wear resistant, a relatively low thermal expansion matching that of natural teeth, and being radiopaque to X-rays used by dentists.
    Type: Grant
    Filed: February 20, 1974
    Date of Patent: August 17, 1976
    Assignee: Owens-Illinois, Inc.
    Inventor: Earl D. Dietz