Patents by Inventor Robert De Luca

Robert De Luca 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).

  • Porcelain dental restoration having a plurality of uniform, color-matched layers
    Patent number: 4828117
    Abstract: A porcelain dental restoration having a plurality of layers including a translucent porcelain layer overlying a more opaque ceramic layer, wherein the color of each of the said two layers is uniform and wherein the colors of the said two layers match.
    Type: Grant
    Filed: July 18, 1984
    Date of Patent: May 9, 1989
    Assignee: Dentsply International Inc.
    Inventors: Carlino Panzera, Robert De Luca
  • Low silver dental amalgam alloy composition
    Patent number: 4370165
    Abstract: A composition adapted for amalgamation with mercury to form a dental amalgam, which consists essentially of a uniform mixture of:(a) A first alloy composed of at least 65 weight percent silver, up to 29 weight percent tin, up to 6 weight percent copper, and up to 2 weight percent zinc; and(b) A second alloy composed of from 46 to 51 weight percent silver, from 4 to 6 weight percent tin, and from 45 to 48 weight percent copper.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: January 25, 1983
    Assignee: Johnson & Johnson Dental Products Company
    Inventor: Robert De Luca