Patents by Inventor Wolfram Höland

Wolfram Höland 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 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
  • 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
  • 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
  • Lithium silicate glass ceramic and lithium silicate glass comprising a monovalent metal oxide
    Patent number: 9101439
    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: Grant
    Filed: October 11, 2012
    Date of Patent: August 11, 2015
    Assignee: Ivoclar Vivadent, AG
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Höland, Volker Rheinberger
  • Inorganic-inorganic composite material and method for producing the same
    Patent number: 9090511
    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: September 22, 2011
    Date of Patent: July 28, 2015
    Assignee: Ivoclar Vivadent AG
    Inventors: Frank Rothbrust, Christian Ritzberger, Volker Rheinberger, Wolfram Höland
  • CeO2-STABILIZED ZrO2 CERAMICS FOR DENTAL APPLICATIONS
    Publication number: 20150191397
    Abstract: The present invention is directed to a porous pre-densified CeO2 stabilized ZrO2 ceramic having a density of 50.0 to 95.0%, relative to the theoretical density of zirconia, and an open porosity of 5 to 50% as well as to a densified CeO2 stabilized ZrO2 ceramic having a density of 97.0 to 100.0%, relative to the theoretical density of zirconia, and wherein the grains of the ceramic have an average grain size of 50 to 1000 nm, methods for the preparation of the pre-densified and densified ceramics and their use for the manufacture of dental restorations.
    Type: Application
    Filed: June 20, 2013
    Publication date: July 9, 2015
    Inventors: Christian Ritzberger, Frank Rothbrust, Marcel Schweiger, Nicolas Courtois, Jérôme Chevalier, Helen Reveron, Wolfram Höland, Volker Rheinberger
  • LITHIUM SILICATE MATERIALS
    Publication number: 20150094197
    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: December 11, 2014
    Publication date: April 2, 2015
    Inventors: Elke Signer-Apel, Wolfram Höland, Marcel Schweiger, Christian Ritzberger, Harald Bürke, Volker Rheinberger
  • Lithium silicate materials
    Patent number: 8940651
    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 12, 2013
    Date of Patent: January 27, 2015
    Assignee: Ivoclar Vivadent AG
    Inventors: Elke Signer-Apel, Wolfram Höland, Marcel Schweiger, Christian Ritzberger, Harald Bürke, Volker Rheinberger
  • Process For The Preparation Of Dental Restorations
    Publication number: 20140363792
    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: August 22, 2014
    Publication date: December 11, 2014
    Inventors: Christian Ritzberger, Wolfram Höland, Marcel Schweiger, Volker Rheinberger