Patents by Inventor Urs Karl Fischer

Urs Karl Fischer 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).

  • Patent number: 10342744
    Abstract: Radically polymerizable dental material, which contains at least one compound of Formula I: The material preferably additionally contains a radically polymerizable monomer, an initiator for the radical polymerization and filler. It is characterized by a low polymerization contraction stress.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: July 9, 2019
    Assignees: Ivoclar Vivadent AG, Technische Universität Wien
    Inventors: Norbert Moszner, Urs-Karl Fischer, Iris Lamparth, Peter Burtscher, Robert Liska, Christian Gorsche, Konstanze Seidler, Paul Gauss
  • Publication number: 20190194362
    Abstract: Polymerizable compositions are described which contain, as photoinitiator, at least one acyltin compound according to the general formula (I):
    Type: Application
    Filed: September 4, 2017
    Publication date: June 27, 2019
    Inventors: Norbert Moszner, Urs Karl Fischer, Peter Burtscher, Robert Liska, Patrick Knaack, Moritz Mitterbauer
  • Patent number: 10322070
    Abstract: The invention relates to dental materials which contain at least one compound of Formula I The materials are characterized by very good mechanical properties after curing.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: June 18, 2019
    Assignee: Ivoclar Vivadent AG
    Inventors: Norbert Moszner, Jörg Angermann, Urs-Karl Fischer, Martina Hauner
  • Publication number: 20190167533
    Abstract: Vinylcyclopropane of general formulae I in which X, Y in each case are O or NH, wherein X and Y cannot have the same meaning, R1 is a linear or branched C1-C8-alkyl radical, which can be interrupted by O, S, an ester group or a urethane group, R2 is a linear or branched C2-C10-alkylene radical, which can be interrupted by O, S, an ester group or a urethane group, R3 is a hydrocarbon radical with 1 to 20 carbon atoms, which additionally can contain one or more N, O or S atoms, and n is 1, 2, 3 or 4, preferably 1 or 2. The vinylcyclopropanes are characterized by a low shrinkage and a high reactivity on radical polymerization and are suitable in particular for the preparation of dental materials.
    Type: Application
    Filed: August 1, 2017
    Publication date: June 6, 2019
    Applicant: Ivoclar Vivadent AG
    Inventors: Norbert MOSZNER, Yohann CATEL, Urs Karl FISCHER, Sven TAUSCHER
  • Publication number: 20190015301
    Abstract: Radically polymerizable, difunctional phenylene sulfide according to Formula I in which X, Y independently of each other in each case are absent or are O or NR6, R1, R2 independently of each other in each case are H, a linear or branched C1 to C10 alkyl radical, —OR7, —SR8, Cl or Br, R3 is absent or is a C1-C10 alkylene radical which can be interrupted by O or S, R4 is absent or is a C1-C10 alkylene radical which can be interrupted by O or S, wherein R3 and R4 cannot be absent at the same time, R5 is H or a C1-C5 alkyl radical, R6, R7, R8 independently of each other in each case are H or a linear or branched C1 to C10 alkyl radical, a, b, c, d independently of each other in each case are 0 or 1 and e is 1 or 2.
    Type: Application
    Filed: July 11, 2018
    Publication date: January 17, 2019
    Inventors: Norbert Moszner, Urs Karl Fischer, Pascal Fässler
  • Publication number: 20190010172
    Abstract: Radically polymerizable silane according to the general formula I in which R1 is a linear or branched aliphatic C1-C9-alkyl radical, phenyl or alkylated phenyl radical, R2, R3 independently of each other in each case are absent or are a linear or branched aliphatic C1-C20-alkylene radical, which can be interrupted by S or O atoms, R4, R5, R6 independently of each other in each case are —Cl, —O—CH3, —O—C2H5, —CH3 or —C2H5, X is CH2 or O, Y is absent, or is O or NR?, wherein R? is H or a C1-5-alkyl radical, and Z is absent, or is O, NR?, —CO—O—, —CO—NR?—, —O—CO—O—, —O—CO—NR?—, or —NR?—CO—NR?—, wherein R? is H or a C1-5-alkyl radical and wherein the radicals R2 and R3 cannot be absent at the same time and Z is absent if R2 or R3 is absent, polycondensates based thereon and fillers surface-modified therewith.
    Type: Application
    Filed: July 2, 2018
    Publication date: January 10, 2019
    Inventors: Norbert Moszner, Jörg Angermann, Urs Karl Fischer, Iris Lamparth, Yohann Catel, Robert Liska
  • Publication number: 20180369075
    Abstract: Radically polymerizable dental material, which contains at least one sulphonic acid ester of Formula 1: in which A is H, CN, an aromatic, cycloaliphatic, linear or branched aliphatic C1-C30-hydrocarbon radical or a combination thereof; X is COO— or —CON(R1)— or is absent; B is an aromatic, cycloaliphatic, linear or branched aliphatic C1-C30-hydrocarbon radical, or a combination thereof; R1 is hydrogen or an aromatic, cycloaliphatic, linear or branched aliphatic C1-C10-hydrocarbon radical; m is an integer from 1 to 6, n is an integer from 1 to 6 and p is an integer from 1 to 6; wherein m and p cannot simultaneously be greater than 1. The compounds of Formula 1 are active as chain transfer agents in radical polymerization.
    Type: Application
    Filed: May 2, 2016
    Publication date: December 27, 2018
    Applicant: Technische Universität Wien
    Inventors: Norbert Moszner, Iris Lamparth, Urs Karl Fischer, Kai Rist, Peter Burtscher, Robert Liska, Christian Gorsche, Konstanze Seidler
  • Publication number: 20180318178
    Abstract: Dental material which contains (a) at least one mono- or multifunctional radically polymerizable monomer, (b) at least one organic halogen compound as initiator for the radical polymerization, (c) at least one transition metal compound as catalyst and (d) at least one reducing agent. The material is characterized by a high storage stability at room temperature and does not have the disadvantages associated with peroxides.
    Type: Application
    Filed: January 8, 2016
    Publication date: November 8, 2018
    Inventors: Norbert MOSZNER, Urs Karl FISCHER, Ulrich S. SCHUBERT, Martin HAGER
  • Publication number: 20180265527
    Abstract: Acyl germanium compound according to general formula [RmAr—(C?O)—]4—Ge and process for the preparation thereof. The compound is suitable as initiator for radical polymerization.
    Type: Application
    Filed: September 26, 2016
    Publication date: September 20, 2018
    Inventors: Norbert Moszner, Iris Lamparth, Urs Karl Fischer, harald Stüger, Michael Haas, Georg Gescheidt Demner
  • Publication number: 20180042822
    Abstract: The invention relates to dental materials which contain at least one compound of Formula I The materials are characterized by very good mechanical properties after curing.
    Type: Application
    Filed: February 11, 2016
    Publication date: February 15, 2018
    Inventors: Norbert Moszner, Jörg Angermann, Urs-Karl Fischer, Martina Hauner
  • Publication number: 20180036209
    Abstract: Dental material which contains at least one vinylcyclopropane of the general formulae I, in which A, B independently of each other are in each case OH or COOH; X, Y independently of each other are in each case O or NH; R1, R2 independently of each other are in each case H or an aliphatic linear or branched C1-C10 hydrocarbon radical which can be interrupted by O, S or an ester group; and n, m independently of each other are in each case 0, 1 or 2, wherein, if X=Y=O, R1?H and R2?H, n+m?1. The vinylcyclopropanes are characterized by a low shrinkage and a high reactivity on radical polymerization and are suitable in particular for the preparation of dental materials.
    Type: Application
    Filed: July 27, 2017
    Publication date: February 8, 2018
    Inventors: Norbert Moszner, Yohann CateI, Urs Karl Fischer, Sven Tauscher
  • Patent number: 9877898
    Abstract: Dental material, which contains an ene compound with two or more C—C multiple bonds and a thiol according to general Formula (1) or an oligomer based on such a thiol, wherein n, p and m are chosen such that the thiol has a total of at least 3 SH groups.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: January 30, 2018
    Assignee: Ivoclar Vivadent AG
    Inventors: Norbert Moszner, Peter Burtscher, Urs-Karl Fischer, Helmut Ritter, Monir Tabatabai, Andreas Utterodt
  • Publication number: 20170172855
    Abstract: Radically polymerizable dental material, which contains at least one compound of Formula I: The material preferably additionally contains a radically polymerizable monomer, an initiator for the radical polymerization and filler. It is characterized by a low polymerization contraction stress.
    Type: Application
    Filed: July 9, 2015
    Publication date: June 22, 2017
    Inventors: Norbert Moszner, Urs-Karl Fischer, Iris Lamparth, Peter Burtscher, Robert Liska, Christian Gorsche, Konstanze Seidler, Paul Gauss
  • Patent number: 9668946
    Abstract: The invention relates to a dental restorative material which comprises a thermolabile or photolabile polymerizable compound of Formula I: [(Z1)m-Q1-X)]k-T-[Y-Q2-(Z2)n]l??Formula I, in which T represents a thermolabile or photolabile group, 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, wherein at least one Z1 or Z2 is a polymerizable group, 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
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: June 6, 2017
    Assignee: Ivoclar Vivadent AG
    Inventors: Norbert Moszner, Iris Lamparth, Thorsten Bock, Urs Karl Fischer, Ulrich Salz, Volker Rheinberger, Robert Liska
  • Publication number: 20170007505
    Abstract: Dental material, which contains an ene compound with two or more C—C multiple bonds and a thiol according to general Formula (1) or an oligomer based on such a thiol, wherein n, p and m are chosen such that the thiol has a total of at least 3 SH groups.
    Type: Application
    Filed: February 24, 2015
    Publication date: January 12, 2017
    Inventors: Norbert Moszner, Peter Burtscher, Urs-Karl Fischer, Helmut Ritter, Monir Tabatabai, Andreas Utterodt
  • 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: 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: 9333150
    Abstract: The invention relates to a dental restorative material on the basis of at least one compound of Formula I A-[X-Q-(Y-CG)n]m?? Formula I, wherein CG represents in each case independently an azide group N3 or an alkyne group selected from the group consisting of —CR1R2—C?CH, with the proviso that the dental restorative material comprises at least one compound of Formula I comprising an azide group and at least one compound of Formula I comprising an alkyne group. The invention also relates to the use of the dental restorative materials according to the invention for preparing dental composites, preferably composite blanks, which are suitable in particular for mechanical processing by means of computer-aided processing techniques such as milling and grinding processes, and which are suitable above all for preparing dental restoration materials such as inlays, onlays, crowns, bridges or veneering materials.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: May 10, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Norbert Moszner, Peter Burtscher, Urs Karl Fischer, Thomas Hirt, Ulrich S. Schubert, Martin Hager, Bobby Happ, Benedict Sandmann
  • Patent number: 9138382
    Abstract: Radically polymerizable macrocyclic polyethers or macrocyclic heteroanalogous polyethers, preferably crown ethers, heteroanalogous crown ethers and cryptands for use in dental materials is disclosed.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: September 22, 2015
    Assignee: Ivoclar Vivadent AG
    Inventors: Norbert Moszner, Frank Zeuner, Urs Karl Fischer, Volker M. Rheinberger, Iris Lamparth
  • Patent number: 8921450
    Abstract: The invention relates to a radically polymerizable monomer of formula (I) wherein W1 and W2 in each case independently represent H or X—R—Y—PG, wherein at least one of W1 and W2 represents X—R—Y—PG, X in each case independently is missing or represents an ether, ester, amide, urethane or urea group, Y in each case independently is missing or represents an ether, ester, amide, urethane or urea group, R in each case independently is missing or represents a C1-C16 alkylene radical which can be interrupted by one or more O atoms, wherein R can be missing only if X and/or Y is simultaneously also missing, and PG in each case independently represents a cyclic, ring-opening polymerizable group, a, b, c and d independently of each other can take the values 3 to 10.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: December 30, 2014
    Assignee: Ivoclar Vivadent AG
    Inventors: Norbert Moszner, Jörg Angermann, Urs Karl Fischer, Volker Rheinberger