Patents by Inventor Harald Bürke

Harald Bürke 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).

  • Lithium Silicate Materails
    Publication number: 20090291820
    Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.
    Type: Application
    Filed: July 27, 2009
    Publication date: November 26, 2009
    Applicant: IVOCLAR VIVADENT AG
    Inventors: Marcel Schweiger, Volker M. Rheinberger, Harald Bürke, Wolfram Höland
  • Lithium silicate glass ceramic
    Patent number: 7452836
    Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: November 18, 2008
    Assignee: Ivoclar Vivadent AG
    Inventors: Elke Apel, Wolfram Höland, Marcel Schweiger, Christian van t'Hoen, Harald Bürke, Volker M. Rheinberger
  • Method for operating a press furnace, and press furnace
    Publication number: 20080099939
    Abstract: The invention relates to a method for operating a press furnace, in particular for dental materials, with an embedding compound into which the preferably ceramic dental material can be introduced via a press ram (26), the speed of penetration of the press ram (26) being detected, wherein, during the pressing operation, an increase in the speed of penetration and/or a decrease is detected, and, based on this, a signal is output.
    Type: Application
    Filed: October 20, 2007
    Publication date: May 1, 2008
    Inventors: Rudolf Jussel, Harald Bürke
  • Lithium silicate materials
    Patent number: 7316740
    Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: January 8, 2008
    Assignee: Ivoclar Vivadent AG
    Inventors: Marcel Schweiger, Volker M. Rheinberger, Harald Bürke, Wolfram Höland