Patents by Inventor Patricia E. Vidal

Patricia E. Vidal 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).

  • Plunger for a pressing furnace
    Patent number: 6484791
    Abstract: A disposable plunger for use in a pressing furnace for the fabrication of dental restorations. The plunger is fabricated of a partially sintered ceramic material. The plunger is fabricated by known casting methods. The mold used for making the plunger can be supplied by a manufacturer of molds or can be easily made by using an alumina or similar plunger as a model. Laborious cleaning and grinding are not required with plungers herein described. Cracking problems that occur with prior art plungers are decreased, if not completely eliminated.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: November 26, 2002
    Assignee: Jeneric/Pentron, Inc.
    Inventor: Patricia E. Vidal
  • Plunger for a pressing furnace
    Patent number: 6302186
    Abstract: A disposable plunger for use in a pressing furnace for the fabrication of dental restorations. The plunger is fabricated of a refractory investment material such as gypsum-bonded, phosphate-bonded or ethyl silicate-bonded investment materials. The plunger is fabricated by known casting methods. The mold used for making the plunger can be supplied by a manufacturer of molds or can be easily made by using an alumina or similar plunger as a model. Laborious cleaning and grinding are not required with plungers herein described. Cracking problems that occur with prior art plungers are decreased, if not completely eliminated.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: October 16, 2001
    Assignee: Jeneric/Pentron, Inc.
    Inventor: Patricia E. Vidal