Patents Assigned to EMPA DÜBENDORF
  • Dental glass
    Patent number: 7795164
    Abstract: The present invention relates to a dental glass containing 50 to 70 wt. % of SiO2, 5 to 18 wt. % of Al2O3, 6.1 to 30 wt. % of MgO, 1 to 15 wt. % of La2O3, 1 to 15 wt. % of WO3, 0.1 to 8 wt. % of ZrO2, and optionally further oxides except for the oxides of Sr, Ba or alkali metals, wherein the stated quantities in total add up to 100 wt. %.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: September 14, 2010
    Assignees: Ivoclar Vivadent AG, Empa Dubendorf
    Inventors: Christian Ritzberger, Volker Rheinberger, Elke Apel, Peter Burtscher, Wolfram Höland, Thomas Graule, Simone Zürcher, Andri Vital
  • Dental Glass
    Publication number: 20090113936
    Abstract: The present invention relates to a dental glass containing 50 to 70 wt. % of SiO2, 5 to 18 wt. % of Al2O3, 6.1 to 30 wt. % of MgO, 1 to 15 wt. % of La2O3, 1 to 15 wt. % of WO3, 0.1 to 8 wt. % of ZrO2, and optionally further oxides except for the oxides of Sr, Ba or alkali metals, wherein the stated quantities in total add up to 100 wt. %.
    Type: Application
    Filed: September 25, 2006
    Publication date: May 7, 2009
    Applicants: IVOCLAR VIVADENT AG, EMPA DÜBENDORF
    Inventors: Christian Ritzberger, Volker Rheinberger, Elke Apel, Peter Burtscher, Wolfram Holand, Thomas Graule, Simone Zurcher, Andri Vital