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).

  • GLASS CERAMIC WITH QUARTZ SOLID SOLUTION PHASES
    Publication number: 20240132396
    Abstract: Quartz solid solution glass ceramics and precursors thereof are described. which are characterized by very good mechanical and optical properties and can be used in particular as restorative materials in dentistry.
    Type: Application
    Filed: February 17, 2022
    Publication date: April 25, 2024
    Inventors: Markus RAMPF, Marc DITTMER, Christian RITZBERGER
  • LITHIUM SILICATE MATERIALS
    Publication number: 20240099819
    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: August 28, 2023
    Publication date: March 28, 2024
    Inventors: Marcel Schweiger, Volker Rheinberger, Harald Bürke, Wolfram Höland, Elke Signer-Apel, Christian Ritzberger, Dmitri Brodkin
  • Fluorescent glass ceramics and glasses with europium content
    Patent number: 11905207
    Abstract: The invention relates to glass ceramics and glasses with a europium content, containing the following components: Component wt.-% SiO2 30.0 to 75.0 Al2O3 10.0 to 45.0 Europium, calculated as Eu2O3 0.05 to 5.0 and which are suitable in particular for the production of dental restorations, the fluorescence properties of which largely correspond to those of natural teeth.
    Type: Grant
    Filed: March 15, 2022
    Date of Patent: February 20, 2024
    Assignee: Ivoclar Vivadent AG
    Inventors: Marc Dittmer, Ronny Hengst, Christian Ritzberger
  • PROCESS FOR THE PREPARATION OF A ZIRCONIA BLANK
    Publication number: 20230404723
    Abstract: A zirconia blank produced by introducing a zirconia suspension into a porous mould and demoulding the blank formed as well as the use of the optionally presintered blank formed for the preparation of a dental restoration using a very short dense-sintering process.
    Type: Application
    Filed: September 1, 2023
    Publication date: December 21, 2023
    Inventors: Bo Jiang, Christian Ritzberger, Frank Rothbrust
  • PROCESS AND SLIP FOR THE PRODUCTION OF CERAMIC SHAPED BODIES MADE OF ZIRCONIUM OXIDE BY 3D INKJET PRINTING
    Publication number: 20230347548
    Abstract: Process and slip for the production of ceramic shaped parts made of zirconium oxide ceramic by a 3D inkjet printing process. The slip contains zirconium oxide which is suspended in a liquid 5 medium, wherein the slip has a zirconium oxide content of from 68 to 88 wt.-% and contains not more than 5 wt.-% organic components. The process for the production of ceramic components comprises the layered shaping and subsequent sintering of the desired component from the slip.
    Type: Application
    Filed: July 3, 2023
    Publication date: November 2, 2023
    Inventors: Christian Ritzberger, Johannes Renner
  • Process for the production of a dental restoration
    Patent number: 11793613
    Abstract: The invention relates to a process for the production of a dental restoration, in which an oxide ceramic material (a) is subjected to a first heat treatment, (b) is subjected to a second heat treatment and (c) is cooled, wherein the heat treatment in step (a) is effected at lower pressure than the heat treatment in step (b).
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: October 24, 2023
    Assignee: Ivoclar Vivadent AG
    Inventors: Frank Rothbrust, Bo Jiang, Rudolf Jüssel, Christian Ritzberger
  • Lithium silicate materials
    Patent number: 11744685
    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: June 27, 2022
    Date of Patent: September 5, 2023
    Assignee: Ivoclar Vivadent AG
    Inventors: Marcel Schweiger, Volker Rheinberger, Harald Bürke, Wolfram Höland, Elke Signer-Apel, Christian Ritzberger, Dmitri Brodkin
  • Process and slip for the production of ceramic shaped bodies made of zirconium oxide by 3D inkjet printing
    Patent number: 11738478
    Abstract: Process and slip for the production of ceramic shaped parts made of zirconium oxide ceramic by a 3D inkjet printing process. The slip contains zirconium oxide which is suspended in a liquid medium, wherein the slip has a zirconium oxide content of from 68 to 88 wt.-% and contains not more than 5 wt.-% organic components. The process for the production of ceramic components comprises the layered shaping and subsequent sintering of the desired component from the slip.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: August 29, 2023
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Johannes Renner
  • SELF-ADHESIVE DENTAL COMPOSITE CEMENT WITH GOOD TRANSPARENCY BASED ON ACID-TREATED FILLERS
    Publication number: 20230201083
    Abstract: A radically polymerizable dental material having at least one radically polymerizable monomer without acid groups, at least one radically polymerizable monomer containing an acid group, at least one fluoroaluminosilicate glass filler and/or radiopaque glass filler, and at least one initiator for the radical polymerization, wherein the filler is an acid-treated fluoroaluminosilicate glass filler and/or radiopaque glass filler.
    Type: Application
    Filed: December 28, 2022
    Publication date: June 29, 2023
    Inventors: Norbert Moszner, Alexandros Gianasmidis, Delphine Catel, Yohann Catel, Andy Brot, Tim Haldner, Christian Ritzberger, Philipp Bielec, Marc Dittmer, Barbara Grabenbauer
  • LITHIUM SILICATE GLASS CERAMIC COMPRISING COPPER
    Publication number: 20230202905
    Abstract: Lithium silicate glass ceramics and precursors thereof are described, which comprise copper and are characterized by very good mechanical and optical properties and can be used in particular as restorative materials in dentistry.
    Type: Application
    Filed: December 19, 2022
    Publication date: June 29, 2023
    Inventors: Marc DITTMER, Markus RAMPF, Christian RITZBERGER, Katrin SULSER
  • LITHIUM SILICATE GLASS CERAMIC COMPRISING TIN
    Publication number: 20230202906
    Abstract: Lithium silicate glass ceramics and precursors thereof are described, which contain tin and are characterized by very good mechanical and optical properties and can be used in particular as restorative materials in dentistry.
    Type: Application
    Filed: December 19, 2022
    Publication date: June 29, 2023
    Inventors: Marc DITTMER, Christian RITZBERGER, Markus RAMPF, Katrin SULSER
  • FORMING APPARATUS FOR A DENTAL OBJECT
    Publication number: 20230121316
    Abstract: A forming apparatus (100) for a dental object (101), having a forming means (127) for producing a predetermined spatial shape of the dental object (101); and a radiation source (105) for emitting radiation having a wavelength shorter than 350 nm onto the material (129) of the dental object (101).
    Type: Application
    Filed: October 13, 2022
    Publication date: April 20, 2023
    Inventors: Markus RAMPF, Marc DITTMER, Christian NIEDRIG, Christian RITZBERGER
  • EXPOSURE DEVICE FOR ILLUMINATING A DENTAL OBJECT
    Publication number: 20230119981
    Abstract: An exposure apparatus (100) for illuminating a dental object (101), including a chamber (103) for receiving the dental object (101); and a radiation source (105) for emitting radiation having a wavelength shorter than 350 nm into the chamber (103).
    Type: Application
    Filed: October 13, 2022
    Publication date: April 20, 2023
    Inventors: Christian Niedrig, Christian Ritzberger, Marc Dittmer, Markus Rampf
  • OVEN FOR HEATING A DENTAL OBJECT
    Publication number: 20230125010
    Abstract: An oven (100) for heating a dental object (101), having a chamber (103) for receiving the dental object (101); a radiation source (105) for emitting radiation having a wavelength smaller than 350 nm into the chamber (103); and heating means (113) for heating the dental object (101) in the chamber (103).
    Type: Application
    Filed: October 13, 2022
    Publication date: April 20, 2023
    Inventors: Christian RITZBERGER, Markus RAMPF, Marc DITTMER, Christian NIEDRIG
  • LITHIUM SILICATE GLASS CERAMIC WITH EASY MACHINABILITY
    Publication number: 20230073207
    Abstract: A lithium silicate glass ceramic having lithium metasilicate as main crystal phase and having not more than 30 wt.-% of lithium metasilicate crystals and having the following components in the amounts indicated: Component Wt.-% SiO2 71.0 to 82.0 Li2O 6.0 to 14.0 MeI2O 4.0 to 15.0 Al2O3 2.0 to 10.0 P2O5 0.5 to 7.0, wherein MeI2O is selected from Na2O, K2O, Rb2O, Cs2O and mixtures thereof, and wherein the molar ratio of SiO2 to Li2O is in the range of 2.5 to 5.0.
    Type: Application
    Filed: August 19, 2022
    Publication date: March 9, 2023
    Inventor: Christian Ritzberger
  • LITHIUM SILICATE GLASS CERAMIC WITH EASY MACHINABILITY
    Publication number: 20230072037
    Abstract: A lithium silicate glass ceramic having lithium metasilicate as main crystal phase and having not more than 30 wt.-% of lithium metasilicate crystals.
    Type: Application
    Filed: August 19, 2022
    Publication date: March 9, 2023
    Inventor: Christian Ritzberger
  • Process for the preparation of a glass-ceramic blank for dental purposes
    Patent number: 11583374
    Abstract: The invention relates to a process for the preparation of a glass-ceramic blank for dental purposes with lithium silicate as crystal phase, in which lithium silicate blanks that are no longer required and in particular residues thereof are used as starting material and which allows the production of a homogeneous starting glass within a short time.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: February 21, 2023
    Assignee: Ivoclar Vivadent AG
    Inventor: Christian Ritzberger
  • PROCESS FOR THE PREPARATION OF A DENTAL RESTORATION
    Publication number: 20230051424
    Abstract: The invention relates to a process for the preparation of a dental restoration, in which an oxide ceramic material is (a) subjected to at least one heat treatment, and (b) cooled, wherein the cooling comprises (b1) a first cooling step with the cooling rate T1 and (b2) a second cooling step with the cooling rate T2 and wherein the absolute value of the cooling rate T2 is less than the absolute value of the cooling rate T1.
    Type: Application
    Filed: August 15, 2022
    Publication date: February 16, 2023
    Inventors: Corina Serban, Frank Rothbrust, Christian Ritzberger, Sebastian Krolikowski
  • Method For Manufacturing A Multi-Color Dental Restoration
    Publication number: 20230012752
    Abstract: A process for the preparation of multi-coloured dental restorations is described, in which glasses and glass ceramics with various compositions are given the shapes of dental restorations and colour changes are effected in the glasses and glass ceramics by irradiating them with artificial electromagnetic radiation and subjecting them to a heat treatment.
    Type: Application
    Filed: December 22, 2020
    Publication date: January 19, 2023
    Inventors: Christian Ritzberger, Marc Dittmer, Markus Rampf, Christian Niedrig
  • Dental Opaquer Composition
    Publication number: 20220370299
    Abstract: The invention relates to a dental opaquer composition which can be used to increase the opacity of zirconium oxide ceramics. In addition, the invention relates to a process for producing a dental restoration, in which the opacity of the zirconium oxide ceramic is increased by using the opaquer composition.
    Type: Application
    Filed: May 19, 2022
    Publication date: November 24, 2022
    Inventors: Corina Serban, Frank Rothbrust, Christian Ritzberger, Sebastian Krolikowski, Vasiliki-Kallirroi Stoumari, Katja Ott, Christin Wildner