Patents by Inventor Volker Rheinberger

Volker Rheinberger 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).

  • Publication number: 20170121216
    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: January 11, 2017
    Publication date: May 4, 2017
    Inventors: Christian RITZBERGER, Elke APEL, Wolfram HÖLAND, Volker RHEINBERGER
  • Patent number: 9532930
    Abstract: The invention relates to a composition with at least one polymerizable binder, wherein the composition contains a photoinitiator mixture which contains (a) at least one diacylgermanium compound of general formula (I) in which R1, R2 independently of each other are a linear C1-4-alkyl, or C2-4-alkenyl radical, which can be substituted by one or more polymerizable groups; R3, R4 independently of each other are in each case H, halogen, a branched or linear C1-4-alkyl or —O—C1-4-alkyl radical; R5, R6, R7 independently of each other are in each case H, halogen, a linear C1-20-alkyl, -alkenyl, -alkoxy or -alkenoxy radical, which can be interrupted by one or more —O—, —S— or —NR8— radicals and substituted by one or more polymerizable groups; and R8 independently is in each case H, a C1-20-alkyl, -alkenyl, -alkoxy or -alkenoxy radical, (b) at least one ?-diketone and (c) at least one accelerator, as well as the use of the composition for example for producing a filling composite.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: January 3, 2017
    Assignee: Ivoclar Vivadent AG
    Inventors: Peter Burtscher, Norbert Moszner, Volker Rheinberger
  • Publication number: 20160368814
    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: September 2, 2016
    Publication date: December 22, 2016
    Inventors: Elke Signer-Apel, Wolfram Höland, Marcel Schweiger, Christian Ritzberger, Harald Bürke, Volker Rheinberger
  • Publication number: 20160302897
    Abstract: Lithium silicate glass ceramics and glasses comprising specific oxides of trivalent elements are described which crystallize at low temperatures and are suitable in particular as dental materials.
    Type: Application
    Filed: June 27, 2016
    Publication date: October 20, 2016
    Inventors: Christian RITZBERGER, Elke APEL, Wolfram HÕLAND, Volker RHEINBERGER
  • Publication number: 20160302898
    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: June 28, 2016
    Publication date: October 20, 2016
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Höland, Volker Rheinberger
  • Publication number: 20160257607
    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: Application
    Filed: May 17, 2016
    Publication date: September 8, 2016
    Inventors: Christian RITZBERGER, Wolfram HOLAND, Marcel SCHWEIGER, Volker RHEINBERGER
  • 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
  • Patent number: 9403726
    Abstract: A process for the preparation of a ceramic or glass ceramic shaped article using stereolithography and using a slip based on a radically polymerizable binder, polymerization initiator and filler, which comprises (A) at least one acidic monomer of general formula I (B) photoinitiator, and (C) ceramic and/or glass ceramic particles.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: August 2, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Urs Karl Fischer, Norbert Moszner, Volker Rheinberger, Wolfgang Wachter, Johannes Homa, Werner Längle
  • 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
  • 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
  • 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
  • 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
  • Patent number: 9393181
    Abstract: Dental material which contains a polymerizable phthalic acid derivative of the general Formula I: with R1=H, methyl or a C1-C5 alkyl residue; R2=H, a phenyl, benzyl or C1-C8 alkyl residue; Q1=is absent or is a C1-C15 alkylene residue, wherein the carbon chain can be interrupted by O or S; Q2=is absent or a (n+1)-valent aliphatic C1-C20 residue, wherein the carbon chain can be interrupted by O or S and wherein Q1 and Q2 cannot be absent simultaneously; X=is absent, is O, S or (—CO—NR4—)—, wherein R4 is H, CH3 or C2H5; Y=is absent, is O, S or (—CO—NR5—)—, wherein R5 is H, CH3 or C2H5; n, m=independently of one another in each case mean 1, 2 or 3; R3=H, CH3, C2H5, Cl, Br or OCH3, and wherein the two carboxyl groups of the benzene ring can together form an anhydride group.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: July 19, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Thorsten Bock, Urs Karl Fischer, Iris Lamparth, Norbert Moszner, Volker Rheinberger
  • Patent number: 9387056
    Abstract: The invention relates to the use of a composite resin composition comprising (a) at least one polyreactive binder, (b) a first photopolymerization initiator having an absorption maximum at a wavelength of less than 400 nm, (c) a second photopolymerization initiator having an absorption maximum at a wavelength of at least 400 nm and (d) an absorber having an absorption maximum at a wavelength of less than 400 nm, for the stereolithographic production of a dental shaped part based on composite resin. The invention also relates to a process for the stereolithographic production of a dental shaped part and the use of the composite resin composition in this process.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: July 12, 2016
    Assignees: Ivoclar Vivadent AG, Technische Universitat Wien
    Inventors: Wolfgang Wachter, Jörg Ebert, Dieter Voser, Norbert Moszner, Volker Rheinberger, Jürgen Stampfl
  • 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
  • Patent number: 9339443
    Abstract: The invention relates to a dental restorative material which comprises (a) at least one antimicrobially active compound of Formula (I) [AG]m-R1—Z—SP—Y—R2—[WG]p??(I), or a filler that is surface-modified with at least one compound of Formula (I), (b) at least one radically polymerizable monomer and (c) at least one initiator for the radical polymerization. The invention also relates to a use of such dental restorative material for the preparation of an adhesive, primer, cement, coating material or filling material. The invention also relates to a dental material which comprises at least one compound of Formula (I), as well as a use of a compound of Formula (I) for modifying the surface of a substrate selected from ceramic materials, noble and non-noble metals, hard tooth structure, tooth enamel, dentine, collagen, soft tissue, mucous membrane and leather.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: May 17, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Ulrich Salz, Thorsten Bock, Christoph Peter Fik, Jörg Tiller, Volker Rheinberger
  • 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
  • Patent number: 9320686
    Abstract: The invention relates to a dental restorative material which comprises a thermolabile compound of Formula I: [(Z1)m-Q1-X)]k-T-[Y-Q2-(Z2)n]l??Formula I, in which T represents a thermolabile unit which contains at least one thermolabile group based on non-covalent interactions, Z1 and Z2 in each case independently represent a polymerizable group selected from vinyl groups, CH2?CR1—CO—O— and CH2?CR1—CO—NR2— or an adhesive group selected from —Si(OR)3, —COOH, —O—PO(OH)2, —PO(OH)2, —SO2OH and —SH, Q1 in each case independently is missing or represents an (m+1)-valent linear or branched aliphatic C1-C20 radical which can be interrupted by —O—, —S—, —CO—O—, —O—CO—, —CO—NR3—, —NR3—CO—, —O—CO—NR3—, —NR3—CO—O— or —NR3—CO—NR3—, Q2 in each case independently is missing or represents an (n+1)-valent linear or branched aliphatic C1-C20 radical which can be interrupted by —O—, —S—, —CO—O—, —O—CO—, —CO—NR3—, —NR3—CO—, —O—CO—NR3—, —NR3—CO—O— or —NR3—CO—NR3—, X and Y in each case independently are missing or represent —O—, —
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: April 26, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Norbert Moszner, Thomas Hirt, Kai Rist, Ulrich Salz, Christoph Weder, Gina Fiore, Christian Heinzmann, Volker Rheinberger
  • 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
  • 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