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).

  • Composite ceramic material comprising zirconia
    Patent number: 8889576
    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: April 13, 2011
    Date of Patent: November 18, 2014
    Assignee: Ivoclar Vivadent AG
    Inventors: Wolfram Höland, Elke Apel, Christian Ritzberger, Frank Rothbrust, Heinrich Kappert, Volker Rheinberger, Jérôme Chevalier, Helen Reveron, Nicolas Courtois, Ricardo Dellagiacomo
  • Lithium Silicate Glass Ceramic And Glass With Transition Metal Oxide
    Publication number: 20140335473
    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: May 12, 2014
    Publication date: November 13, 2014
    Applicant: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Wolfram Höland, Marcel Schweiger, Volker Rheinberger
  • Process for the preparation of dental restorations
    Patent number: 8865606
    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: September 26, 2011
    Date of Patent: October 21, 2014
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Wolfram Höland, Marcel Schweiger, Volker Rheinberger
  • LITHIUM SILICATE GLASS CERAMIC AND LITHIUM SILICATE GLASS COMPRISING A HEXAVALENT METAL OXIDE
    Publication number: 20140232030
    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: Application
    Filed: October 11, 2012
    Publication date: August 21, 2014
    Applicant: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Höland, Volker Rheinberger
  • LITHIUM SILICATE GLASS CERAMIC AND LITHIUM SILICATE GLASS COMPRISING A TETRAVALENT METAL OXIDE
    Publication number: 20140223965
    Abstract: Lithium silicate glass ceramics and glasses containing specific oxides of tetravalent elements are described which crystallize at low temperatures and are suitable in particular as dental materials.
    Type: Application
    Filed: October 11, 2012
    Publication date: August 14, 2014
    Applicant: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Höland, Volker Rheinberger
  • LITHIUM SILICATE GLASS CERAMIC AND LITHIUM SILICATE GLASS COMPRISING A TRIVALENT METAL OXIDE
    Publication number: 20140225290
    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: Application
    Filed: October 11, 2012
    Publication date: August 14, 2014
    Applicant: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Höland, Volker Rheinberger
  • LITHIUM SILICATE GLASS CERAMIC AND LITHIUM SILICATE GLASS COMPRISING A DIVALENT METAL OXIDE
    Publication number: 20140228196
    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: October 11, 2012
    Publication date: August 14, 2014
    Applicant: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Höland, Volker Rheinberger
  • Shaded zirconia ceramics
    Patent number: 8796166
    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: April 4, 2012
    Date of Patent: August 5, 2014
    Assignee: Ivoclar Vivadent AG
    Inventors: Wolfram Höland, Christian Ritzberger, Elke Apel, Frank Rothbrust, Jérôme Chevalier, Dmitri Brodkin
  • Lithium silicate glass ceramic and glass with ZrO2 content
    Patent number: 8778075
    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: August 5, 2013
    Date of Patent: July 15, 2014
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Ricardo Dellagiacomo, Marcel Schweiger, Harald Bürke, Wolfram Höland, Volker Rheinberger
  • 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 Materials
    Publication number: 20130296156
    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 12, 2013
    Publication date: November 7, 2013
    Inventors: Elke Apel, Wolfram Höland, Marcel Schweiger, Christian van t'Hoen, Harald Burke, 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 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
  • Phosphosilicate glass ceramic
    Patent number: 8263508
    Abstract: A phosphosilicate glass ceramic with nanoscale fluoroapatite and leucite crystals. The glass ceramic is very similar to natural tooth material in terms of its optical properties. The glass ceramic has a low linear thermal expansion coefficient and a low pressing temperature and is therefore particularly suitable for pressing on metal alloys to produce dental restoration.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: September 11, 2012
    Assignee: Ivoclar Vivadent AG
    Inventors: Urs Bolle, Marcel Schweiger, Elke Apel, Wolfram Höland, 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