Patents by Inventor Christian Ritzberger

Christian Ritzberger 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).

  • Coated Dental Powder
    Publication number: 20080138768
    Abstract: The present invention relates to an inorganic dental powder, coated with at least one layer comprising inorganic and/or organic substances or consisting thereof, and to a process for its preparation.
    Type: Application
    Filed: January 19, 2006
    Publication date: June 12, 2008
    Inventors: Wolfram Holand, Christian Ritzberger, Norbert Moszner, Harald Kerschbaumer, Volker Rheinberger, Ricardo Dellagiacoma
  • Inorganic-Inorganic Composite Material And Method For Producing The Same
    Publication number: 20080118894
    Abstract: Process for producing an inorganic-inorganic composite material, in which an open-pore, crystalline oxide ceramic shaped part is produced from an oxide ceramic powder or a powder of an oxide ceramic mixture after shape-imparting processing and presintering, an infiltration substance is applied to this shaped part in vacuo and at room temperature, and the oxide ceramic is sintered in a densifying manner under an air atmosphere and at ambient pressure to form an inorganic-inorganic composite material.
    Type: Application
    Filed: January 27, 2005
    Publication date: May 22, 2008
    Inventors: Frank Rothbrust, Christian Ritzberger, Wolfram Holand, Volker Rheinberger
  • Translucent and radio-opaque glass ceramics
    Patent number: 7371702
    Abstract: Radio-opaque glass ceramics are described which have high chemical durability and adjustable translucency, brightness and coefficient of thermal expansion.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: May 13, 2008
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Holand, Volker M. Rheinberger
  • Process for the preparation of colored blanks and dental shaped parts
    Publication number: 20070292597
    Abstract: The invention relates to compositions based on ZrO2, and single- and multi-colored blanks made from oxide ceramics, and a process for their preparation, in which oxide ceramic powder is coated with a coloring substance, the coated powders are preferably graded and at least one colored powder is filled into a compression mould, the colored powder or powders are compressed to produce a shaped body, and the compressed shaped body is sintered to produce a blank, and to the use of these blanks for the preparation of dental restorations.
    Type: Application
    Filed: May 18, 2007
    Publication date: December 20, 2007
    Applicant: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Holand, Frank Rothbrust, Harald Kerschbaumer, Volker Rheinberger