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).

  • LITHIUM SILICATE GLASS CERAMIC AND LITHIUM SILICATE GLASS COMPRISING A MONOVALENT METAL OXIDE
    Publication number: 20140135202
    Abstract: Lithium silicate glass ceramics and glasses comprising specific oxides of monovalent elements are described which crystallize at low temperatures and are suitable in particular as dental materials.
    Type: Application
    Filed: October 11, 2012
    Publication date: May 15, 2014
    Applicant: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Höland, Volker Rheinberger
  • Lithium silicate glass ceramic and glass with ZrO2 content
    Publication number: 20140000314
    Abstract: Lithium silicate glass ceramics and glasses are described which can advantageously be applied to zirconium oxide ceramics in particular by pressing-on in the viscous state and form a solid bond with these.
    Type: Application
    Filed: September 6, 2013
    Publication date: January 2, 2014
    Applicant: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Ricardo Dellagiacomo, Marcel Schweiger, Harald Bürke, Wolfram Höland, Volker Rheinberger
  • Lithium Silicate Glass Ceramic and Glass With ZrO2 Content
    Publication number: 20130323404
    Abstract: Lithium silicate glass ceramics and glasses are described which can advantageously be applied to zirconium oxide ceramics in particular by pressing-on in the viscous state and form a solid bond with these.
    Type: Application
    Filed: August 5, 2013
    Publication date: December 5, 2013
    Applicant: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Ricardo Dellagiacomo, Marcel Schweiger, Harald Büeke, Wolfram Höland, Volker Rheinberger
  • Lithium silicate glass ceramic and glass with ZrOcontent
    Patent number: 8557150
    Abstract: Lithium silicate glass ceramics and glasses are described which can advantageously be applied to zirconium oxide ceramics in particular by pressing-on in the viscous state and form a solid bond with these.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: October 15, 2013
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Ricardo Dellagiacomo, Marcel Schweiger, Harald Bürke, Wolfram Höland, Volker Rheinberger
  • Lithium silicate materials
    Patent number: 8546280
    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: July 1, 2011
    Date of Patent: October 1, 2013
    Assignee: Ivoclar Vivadent AG
    Inventors: Elke Apel, Wolfram Höland, Marcel Schweiger, Christian Ritzberger, Harald Bürke, Volker M. Rheinberger
  • Process for the preparation of coloured blanks and dental shaped parts
    Patent number: 8541329
    Abstract: The invention relates to compositions based on ZrO2, and single- and multi-coloured blanks made from oxide ceramics, and a process for their preparation, in which a) oxide ceramic powder is coated with a colouring substance, b) the coated powders are preferably graded and at least one coloured powder is filled into a compression mould, c) the coloured powder or powders are compressed to produce a shaped body, and d) the compressed shaped body is sintered to produce a blank, and to the use of these blanks for the preparation of dental restorations.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: September 24, 2013
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Höland, Frank Rothbrust, Harald Kerschbaumer, Volker Rheinberger
  • Lithium silicate glass ceramic and glass with ZrOcontent
    Patent number: 8536078
    Abstract: Lithium silicate glass ceramics and glasses containing at least 6.1 wt.-% ZrO2 are provided which can advantageously be applied to zirconium oxide ceramics in particular by pressing-on in the viscous state and forming a solid bond with the zirconium oxide ceramics.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: September 17, 2013
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Ricardo Dellagiacomo, Marcel Schweiger, Harald Burke, Wolfram Holand, Volker Rheinberger
  • Lithium silicate materials
    Patent number: 8444756
    Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: May 21, 2013
    Assignee: Ivoclar Vivadent AG
    Inventors: Marcel Schweiger, Volker Rheinberger, Harald Burke, Wolfram Holand, Elke Apel, Christian Ritzberger, Dmitri Brodkin
  • Primary particles coated with a chromophoric component
    Patent number: 8329296
    Abstract: The invention relates to primary particles of oxide-ceramic material, wherein the primary particles have an average particle size in the range from 10 to 1000 nm and are coated with a chromophoric component, a process for their preparation and their use in particular in the preparation of ceramic moldings and dental restorations. The invention further relates to a suspension based on oxide-ceramic material which contains the primary particles, and a process for the preparation of a ceramic moldings.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: December 11, 2012
    Assignee: Ivoclar Vivadent AG
    Inventors: Elke Apel, Christian Ritzberger, Wolfram Holand, Christoph Appert, Wolfgang Wachter, Volker Rheinberger
  • Lithium silicate glass ceramic and glass with ZrO2 content
    Publication number: 20120248642
    Abstract: Lithium silicate glass ceramics and glasses are described which can advantageously be applied to zirconium oxide ceramics in particular by pressing-on in the viscous state and form a solid bond with these.
    Type: Application
    Filed: September 26, 2011
    Publication date: October 4, 2012
    Applicant: IVOCLAR VIVADENT AG
    Inventors: Christian Ritzberger, Ricardo Dellagiacomo, Marcel Schweiger, Harald Bürke, Wolfram Höland, Volker Rheinberger
  • Process for the Preparation of Dental Restorations
    Publication number: 20120241991
    Abstract: The invention relates to a process for preparing dental restorations, wherein a lithium silicate glass ceramic or a lithium silicate glass is used which contains at least 8.5 wt.-% transition metal oxide selected from the group consisting of oxides of yttrium, oxides of transition metals with an atomic number from 41 to 79 and mixtures of these oxides.
    Type: Application
    Filed: September 26, 2011
    Publication date: September 27, 2012
    Applicant: IVOCLAR VIVADENT AG
    Inventors: Christian RITZBERGER, Wolfram HÖLAND, Marcel SCHWEIGER, Volker RHEINBERGER
  • Shaded Zirconia Ceramics
    Publication number: 20120196737
    Abstract: The invention relates to compositions based on Ce-stabilized 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. The compositions exhibit high fracture toughness and high flexural strength.
    Type: Application
    Filed: April 4, 2012
    Publication date: August 2, 2012
    Applicant: IVOCLAR VIVADENT AG
    Inventors: Wolfram Höland, Christian Ritzberger, Elke Apel, Frank Rothbrust, Jerome Chevalier, Dmitri Brodkin
  • Shaded zirconia ceramics
    Patent number: 8173562
    Abstract: The invention relates to compositions based on Ce-stabilized 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. The compositions exhibit high fracture toughness and high flexural strength.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: May 8, 2012
    Assignee: Ivoclar Vivadent AG
    Inventors: Wolfram Höland, Christian Ritzberger, Elke Apel, Frank Rothbrust, Jerome Chevalier, Dmitri Brodkin
  • Lithium silicate materials
    Patent number: 8162664
    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: July 1, 2011
    Date of Patent: April 24, 2012
    Assignee: Ivoclar Vivadent AG
    Inventors: Elke Apel, Wolfram Holland, Marcel Schweiger, Christian Ritzberger, Harald Burke, Volker Rheinberger
  • Inorganic-inorganic composite material and method for producing the same
    Publication number: 20120064490
    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: September 22, 2011
    Publication date: March 15, 2012
    Applicant: IVOCLAR VIVADENT AG
    Inventors: Frank Rothbrust, Christian Ritzberger, Wolfram Höland, Volker Rheinberger
  • PROCESS FOR THE PREPARATION OF COLOURED BLANKS AND DENTAL SHAPED PARTS
    Publication number: 20110319254
    Abstract: The invention relates to compositions based on ZrO2, and single- and multi-coloured blanks made from oxide ceramics, and a process for their preparation, in which a) oxide ceramic powder is coated with a colouring substance, b) the coated powders are preferably graded and at least one coloured powder is filled into a compression mould, c) the coloured powder or powders are compressed to produce a shaped body, and d) 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: September 2, 2011
    Publication date: December 29, 2011
    Applicant: IVOCLAR VIVADENT AG
    Inventors: Christian RITZBERGER, Elke APEL, Wolfram HÖLAND, Frank ROTHBRUST, Harald KERSCHBAUMER, Volker M. RHEINBERGER
  • Inorganic-inorganic composite material and method for producing the same
    Patent number: 8080189
    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: Grant
    Filed: January 27, 2005
    Date of Patent: December 20, 2011
    Assignee: Ivoclar Vivadent AG
    Inventors: Frank Rothbrust, Christian Ritzberger, Wolfram Höland, Volker Rheinberger
  • Lithium Silicate Glass Ceramic and Glass With ZrO2 Content
    Publication number: 20110256409
    Abstract: Lithium silicate glass ceramics and glasses are described which can advantageously be applied to zirconium oxide ceramics in particular by pressing-on in the viscous state and form a solid bond with these.
    Type: Application
    Filed: April 5, 2011
    Publication date: October 20, 2011
    Applicant: IVOCLAR VIVADENT AG
    Inventors: Christian RITZBERGER, Ricardo DELLAGIACOMO, Marcel SCHWEIGER, Harald BURKE, Wolfram H?LAND, Volker RHEINBERGER
  • Composite Ceramic Material Comprising Zirconia
    Publication number: 20110254181
    Abstract: The invention relates to a composite ceramic material which comprises: (a) a first phase based on zirconia containing CeO2 as stabilizer, and (b) a second phase based on an aluminate. The invention also relates to a ceramic powder composition, processes for the preparation of the composite ceramic material and the ceramic powder composition as well as uses thereof.
    Type: Application
    Filed: April 13, 2011
    Publication date: October 20, 2011
    Applicant: IVOCLAR VIVADENT AG
    Inventors: Wolfram Holand, Elke Apel, Christian Ritzberger, Frank Rothbrust, Heinrich Kappert, Volker Rheinberger, Jerome Chevalier, Helen Reveron, Nicolas Courtois, Ricardo Dellagiacomo
  • Lithium silicate glass ceramic and glass with transition metal oxide
    Publication number: 20110257000
    Abstract: The invention relates to a lithium silicate glass ceramic, which contains at least 8.5 wt.-% transition metal oxide selected from the group consisting of oxides of yttrium, oxides of transition metals with an atomic number from 41 to 79 and mixtures of these oxides. The invention also relates to a corresponding lithium silicate glass, a process for the preparation of the glass ceramic and of the glass as well as their use.
    Type: Application
    Filed: April 4, 2011
    Publication date: October 20, 2011
    Applicant: IVOCLAR VIVADENT AG
    Inventors: Christian RITZBERGER, Wolfram HOLAND, Marcel SCHWEIGER, Volker RHEINBERGER