Patents by Inventor Frank P. Fonvielle

Frank P. Fonvielle 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).

  • Leucite porcelain
    Patent number: 4604366
    Abstract: Porcelain compositions, especially dental porcelain compositions, which contain leucite crystals in controlled amounts in a glassy phase matrix to permit selective adjustment of the thermal coefficient of expansion of the porcelain compositions, including methods of preparing and using same and products derived therefrom.
    Type: Grant
    Filed: March 20, 1984
    Date of Patent: August 5, 1986
    Assignee: Dentsply Research & Development Corp.
    Inventors: Joseph M. Kacicz, Frank P. Fonvielle
  • Method and apparatus to produce artificial teeth for dentures
    Patent number: 4533325
    Abstract: This invention pertains to a method and apparatus to fabricate economical full arch unitary upper and lower sets of artificial teeth for use in preparing dentures for edentulous dental patients and attaching said sets of teeth to denture base material by a process developed for the purpose of utilizing these sets of teeth and converting them into finished upper and lower dentures by the use of a specialized apparatus. The process and apparatus, per se, are the subject of another related application and eliminates the conventional procedure of mounting individual artificial teeth in the normal process of fabricating dentures.
    Type: Grant
    Filed: July 1, 1983
    Date of Patent: August 6, 1985
    Assignee: Dentsply Research & Development Corp.
    Inventors: John J. Blair, Frank P. Fonvielle, Richard A. Smith, Barry D. Dehoff, Roger C. Shue