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 materials
    Patent number: 9434639
    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: December 11, 2014
    Date of Patent: September 6, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Elke Signer-Apel, Wolfram Höland, Marcel Schweiger, Christian Ritzberger, Harald Bürke, Volker Rheinberger
  • LITHIUM DISILICATE-APATITE GLASS CERAMIC WITH TRANSITION METAL OXIDE
    Publication number: 20160236971
    Abstract: Lithium disilicate-apatite glass ceramics comprising transition metal oxide are described which are characterized by a high chemical stability, and the translucence of which can be adjusted as desired, and which can therefore be used in particular as restoration material in dentistry.
    Type: Application
    Filed: November 5, 2014
    Publication date: August 18, 2016
    Inventors: Markus Rampf, Christian RITZBERGER, Marcel SCHWEIGER, Wolfram HÖLAND
  • Lithium silicate glass ceramic and lithium silicate glass comprising a trivalent metal oxide
    Patent number: 9402699
    Abstract: Lithium silicate glass ceramics and glasses containing specific oxides of trivalent elements are described which crystallize at low temperatures and are suitable in particular as dental materials.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: August 2, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Höland, Volker Rheinberger
  • Composite ceramic material comprising zirconia
    Patent number: 9403721
    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: Grant
    Filed: October 16, 2014
    Date of Patent: August 2, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Wolfram Holand, Elke Signer-Apel, Christian Ritzberger, Frank Rothbrust, Heinrich Kappert, Volker Rheinberger, Jerome Chevalier, Helen Reveron, Nicolas Courtois, Ricardo Dellagiacomo
  • Lithium silicate glass ceramic and lithium silicate glass comprising a hexavalent metal oxide
    Patent number: 9403714
    Abstract: Lithium silicate glass ceramics and glasses containing specific oxides of hexavalent elements are described which crystallize at low temperatures and are suitable in particular as dental materials.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: August 2, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Höland, Volker Rheinberger
  • PROCESS FOR THE PREPARATION OF DENTAL RESTORATIONS
    Publication number: 20160206519
    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: March 29, 2016
    Publication date: July 21, 2016
    Inventors: Christian Ritzberger, Wolfram Höland, Marcel Schweiger, Volker Rheinberger
  • Lithium disilicate-apatite glass-ceramic
    Patent number: 9371249
    Abstract: Lithium disilicate apatite glass-ceramics are described which are characterized by a high chemical stability and can therefore be used in particular as restoration material in dentistry.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: June 21, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Wolfram Holand, Marcel Schweiger, Volker Rheinberger
  • Controlling Of Sintering Kinetics Of Oxide Ceramics
    Publication number: 20160157971
    Abstract: The invention relates to multi-layer oxide ceramic bodies and in particular to presintered multi-layer oxide ceramic blanks and oxide ceramic green bodies suitable for dental applications. These bodies can be thermally densified by further sintering without distortion and are thus particularly suitable for the manufacture of dental restorations. The invention also relates to a process for the manufacture of such multi-layer oxide ceramic bodies as well as to a process for the manufacture of dental restorations using the multi-layer oxide ceramic bodies.
    Type: Application
    Filed: July 21, 2014
    Publication date: June 9, 2016
    Inventors: Frank ROTHBRUST, Christian RITZBERGER, Dmitri BRODKIN, Ajmal KHAN, Marcel SCHWEIGER
  • Process for the preparation of dental restorations
    Patent number: 9326835
    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: Grant
    Filed: August 22, 2014
    Date of Patent: May 3, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Wolfram Höland, Marcel Schweiger, Volker Rheinberger
  • Lithium silicate glass ceramic and glass with transition metal oxide
    Patent number: 9321674
    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: Grant
    Filed: May 12, 2014
    Date of Patent: April 26, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Wolfram Höland, Marcel Schweiger, Volker Rheinberger
  • Lithium Silicate Materials
    Publication number: 20160106526
    Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools.
    Type: Application
    Filed: December 30, 2015
    Publication date: April 21, 2016
    Inventors: Marcel Schweiger, Volker Rheinberger, Harald Bürke, Wolfram Höland, Elke Signer-Apel, Christian Ritzberger, Dmitri Brodkin
  • Lithium Silicate Glass Ceramic and Glass with ZrO2 Content
    Publication number: 20160106632
    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: December 22, 2015
    Publication date: April 21, 2016
    Inventors: Christian Ritzberger, Ricardo Dellagiacomo, Marcel Schweiger, Harald Bürke, Wolfram Höland, Volker Rheinberger
  • LITHIUM SILICATE GLASS CERAMIC AND GLASS WITH DIVALENT METAL OXIDE
    Publication number: 20160075593
    Abstract: Lithium silicate glass ceramics and glasses containing specific oxides of divalent elements are described which crystallize at low temperatures and are suitable in particular as dental materials.
    Type: Application
    Filed: November 20, 2015
    Publication date: March 17, 2016
    Inventors: Christian Ritzberger, Elke APEL, Wolfram HÖLAND, Volker RHEINBERGER
  • LITHIUM SILICATE GLASS CERAMIC AND GLASS WITH RUBIDIUM OXIDE CONTENT
    Publication number: 20160051349
    Abstract: The invention relates to the use of lithium silicate glass ceramics and glasses with rubidium oxide content for coating an oxide ceramic, a metal or an alloy.
    Type: Application
    Filed: April 8, 2014
    Publication date: February 25, 2016
    Inventors: Volker Rheinberger, Markus Rampf, Marc Dittmer, Christian Ritzberger, Wolfram Höland, Marcel Schweiger
  • Lithium silicate glass ceramic and glass with ZrOcontent
    Patent number: 9249048
    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 6, 2013
    Date of Patent: February 2, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Ricardo Dellagiacomo, Marcel Schweiger, Harald Bürke, Wolfram Höland, Volker Rheinberger
  • Lithium silicate materials
    Patent number: 9248078
    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: March 15, 2013
    Date of Patent: February 2, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Marcel Schweiger, Volker Rheinberger, Harald Burke, Wolfram Höland, Elke Apel, Christian Ritzberger, Dmitri Brodkin
  • Lithium silicate glass ceramic and lithium silicate glass comprising a divalent metal oxide
    Patent number: 9232989
    Abstract: Lithium silicate glass ceramics and glasses containing specific oxides of divalent elements are described which crystallize at low temperatures and are suitable in particular as dental materials.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: January 12, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Höland, Volker Rheinberger
  • LITHIUM SILICATE GLASS CERAMICS AND LITHIUM SILICATE GLASS CONTAINING CESIUM OXIDE
    Publication number: 20150374589
    Abstract: The invention relates to the use of lithium silicate glass ceramics and glasses with caesium oxide content, which are suitable in particular for veneering oxide ceramic restorations and metal restorations.
    Type: Application
    Filed: April 8, 2014
    Publication date: December 31, 2015
    Inventors: Markus RAMPF, Marc DITTMER, Wolfram HÖLAND, Urs BOLLE, Marcel SCHWEIGER, Volker RHEINBERGER, Christian RITZBERGER
  • BLANK FOR DENTAL PURPOSES
    Publication number: 20150374465
    Abstract: Blanks for dental purposes are described which have at least two layers, bonded to one another, of lithium silicate glasses and glass ceramics, wherein the layers differ in colour and the layers are monolithic.
    Type: Application
    Filed: February 7, 2014
    Publication date: December 31, 2015
    Inventors: Harald BÜRKE, Diana TAUCH, Marcel SCHWEIGER, Wolfram HÖLAND, Christian RITZBERGER, Volker RHEINBERGER
  • LITHIUM SILICATE GLASS CERAMIC AND GLASS WITH MONOVALENT METAL OXIDE
    Publication number: 20150299031
    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: June 26, 2015
    Publication date: October 22, 2015
    Inventors: Christian RITZBERGER, Elke APEL, Wolfram HÖLAND, Volker RHEINBERGER