Patents by Inventor Joseph Zel

Joseph Zel 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).

  • Publication number: 20070031789
    Abstract: The present invention relates to an aesthetic dental restoration having a layered structure, which dental restoration has the appearance of a natural tooth. In addition, the present invention relates to a method for preparing such dental restorations. Particularly, the invention is based on the control of interaction between opalescence and fluorescence.
    Type: Application
    Filed: October 6, 2006
    Publication date: February 8, 2007
    Inventors: Joseph Zel, Petrus Appelman, Eric Marinus Cornelissen, Marcel de Kler, Jurgen Gebhardt
  • Publication number: 20050064369
    Abstract: The present invention relates to an aesthetic dental restoration having a layered structure, which dental restoration has the appearance of a natural tooth. In addition, the present invention relates to a method for preparing such dental restorations. Particularly, the invention is based on the control of interaction between opalescence and fluorescence.
    Type: Application
    Filed: September 22, 2003
    Publication date: March 24, 2005
    Inventors: Joseph Zel, Petrus Appelman, Eric Marinus Cornelissen, Marcel Kler, Jurgen Gebhardt