Patents by Inventor Uwe Walz

Uwe Walz 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: 11918664
    Abstract: The present invention relates to an aqueous dental glass ionomer composition for use in the treatment of cavitated carious lesions, which composition comprises a water-soluble, polymerizable polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the polymerizable polymer has a polymer backbone and pendant groups having one or more polymerizable carbon-carbon double bonds. The dental glass ionomer composition is used as a permanent direct restoration.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: March 5, 2024
    Assignee: DENTSPLY SIRONA INC.
    Inventors: Florian Szillat, Caroline Renn, Christoph Weber, Uwe Walz, Joachim Klee
  • Patent number: 11857650
    Abstract: The present invention relates to a dental composition comprising a dental filler containing a structural filler and silanated glass flakes. Furthermore, the present invention relates to the use of silanated glass flakes for preparing a dental composition.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: January 2, 2024
    Assignee: DENTSPLY SIRONA INC.
    Inventors: Christoph Weber, Uwe Walz, Stephanie Noerpel
  • Publication number: 20220031576
    Abstract: An additive manufacturing process comprising: (a) providing a curable composition comprising: (i) a filler comprising glassflakes having a diameter D3,99 as determined by light scattering in the range of from 5 to 150 ?m; and (ii) one or more curable compounds; (b) controlling an apparatus to form an object by using the curable composition, whereby the curable composition passes a discharge orifice having a minimum diameter ?min, wherein the ratio of the minimum diameter of the discharge orifice to the diameter D3,99 of the glassflakes (?min/D3,99) is in the range of 2 to less than 10; and wherein the median diameter D3,50 of the glassflakes is larger than the thickness of the glassflakes.
    Type: Application
    Filed: November 27, 2019
    Publication date: February 3, 2022
    Applicant: DENTSPLY SIRONA INC.
    Inventors: Stephanie NOERPEL, Thomas TIGGES, Uwe WALZ, Christoph WEBER
  • Publication number: 20210308019
    Abstract: The present invention relates to an aqueous dental glass ionomer composition for use in the treatment of cavitated carious lesions, which composition comprises a water-soluble, polymerizable polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the polymerizable polymer has a polymer backbone and pendant groups having one or more polymerizable carbon-carbon double bonds. The dental glass ionomer composition is used as a permanent direct restoration.
    Type: Application
    Filed: June 10, 2021
    Publication date: October 7, 2021
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: SZILLAT Florian, Caroline Renn, Christoph Weber, Uwe Walz, Joachim Klee
  • Patent number: 11071693
    Abstract: The present invention relates to an aqueous dental glass ionomer composition for use in the treatment of cavitated carious lesions, which composition comprises a water-soluble, polymerizable polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the polymerizable polymer has a polymer backbone and pendant groups having one or more polymerizable carbon-carbon double bonds. The dental glass ionomer composition is used as a permanent direct restoration.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: July 27, 2021
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Szillat Florian, Caroline Renn, Christoph Weber, Uwe Walz, Joachim Klee
  • Patent number: 10624821
    Abstract: The present invention relates to an aqueous dental glass ionomer composition comprising (A) a reactive particulate glass, (B) a water-soluble, polymerizable polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the polymerizable polymer has a polymer backbone and hydrolysis-stable pendant groups having one or more polymerizable carbon-carbon double bonds, wherein the polymerizable polymer is obtainable by a process comprising a) a step of copolymerizing a mixture comprising (i) a first copolymerizable monomer comprising at least one optionally protected carboxylic acid group and a first polymerizable organic moiety, and (ii) a second copolymerizable monomer comprising one or more optionally protected primary and/or secondary amino groups and a second polymerizable organic moiety, for obtaining an amino group containing copolymer; b) a step of coupling to the amino group containing copolymer a compound having a polymerizable moiety and a functional
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: April 21, 2020
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Caroline Renn, Oliver Elsner, Julia Gansel, Christian Scheufler, Uwe Walz, Christoph Weber, Joachim E. Klee, Maxmilian Maier
  • Patent number: 10610462
    Abstract: The present disclosure relates to an aqueous dental glass ionomer composition comprising a reactive particulate glass, a water-soluble, polymerizable polymer which is reactive with the particulate glass in a cement reaction, a hydrolysis-stable, water-soluble monomer having a single polymerizable double bond and optionally a carboxylic acid group or hydroxyl group; and a polymerization initiator system, wherein the polymerizable polymer is obtainable by a process comprising a step of polymerizing a mixture comprising a first polymerizable monomer comprising at least one optionally protected carboxylic acid group and a first polymerizable organic moiety, and optionally a second copolymerizable monomer comprising one or more optionally protected primary and/or secondary hydroxyl and/or amino group(s) and a second polymerizable organic moiety, for obtaining an water-soluble polymer; a step of coupling to the water-soluble polymer a compound having a polymerizable moiety and a functional group reactive with an op
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: April 7, 2020
    Assignee: DENTSPLY SIRONA INC.
    Inventors: Caroline Renn, Oliver Elsner, Maximilian Maier, Florian Szillat, Joachim Klee, Christoph Weber, Uwe Walz, Christian Scheufler, Helmut Ritter, Andrew Lichkus, Xiaoming Jin
  • Publication number: 20190343730
    Abstract: The present invention relates to an aqueous dental glass ionomer composition for use in the treatment of cavitated carious lesions, which composition comprises a water-soluble, polymerizable polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the polymerizable polymer has a polymer backbone and pendant groups having one or more polymerizable carbon-carbon double bonds. The dental glass ionomer composition is used as a permanent direct restoration.
    Type: Application
    Filed: December 13, 2017
    Publication date: November 14, 2019
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: SZILLAT Florian, Caroline RENN, Christoph WEBER, Uwe WALZ, Joachim Klee
  • Publication number: 20190231648
    Abstract: The present invention relates to a dental composition comprising a dental filler containing a structural filler and silanated glass flakes. Furthermore, the present invention relates to the use of silanated glass flakes for preparing a dental composition.
    Type: Application
    Filed: June 30, 2017
    Publication date: August 1, 2019
    Applicant: DENTSPLY SIRONA inc.
    Inventors: Christoph WEBER, Uwe WALZ, Stephanie NOERPEL
  • Patent number: 10272017
    Abstract: An aqueous dental glass ionomer composition comprising (A) a reactive particulate glass, (B) a water-soluble polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, (C) a water-soluble, hydrolysis-stable monomer having a single polymerizable double bond and optionally a carboxylic acid group or hydroxyl group; (D) a water-soluble, hydrolysis-stable polymerizable crosslinker having at least two polymerizable carbon-carbon double bonds; and (E) a polymerization initiator system.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: April 30, 2019
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Caroline Renn, Oliver Elsner, Florian Szillat, Joachim Klee, Christoph Weber, Uwe Walz, Christian Scheufler, Andrew Lichkus, Xiaoming Jin
  • Publication number: 20180353391
    Abstract: The present invention relates to an aqueous dental glass ionomer composition comprising (A) a reactive particulate glass, (B) a water-soluble, polymerizable polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the polymerizable polymer has a polymer backbone and hydrolysis-stable pendant groups having one or more polymerizable carbon-carbon double bonds, wherein the polymerizable polymer is obtainable by a process comprising a) a step of copolymerizing a mixture comprising (i) a first copolymerizable monomer comprising at least one optionally protected carboxylic acid group and a first polymerizable organic moiety, and (ii) a second copolymerizable monomer comprising one or more optionally protected primary and/or secondary amino groups and a second polymerizable organic moiety, for obtaining an amino group containing copolymer; b) a step of coupling to the amino group containing copolymer a compound having a polymerizable moiety and a functional
    Type: Application
    Filed: June 13, 2016
    Publication date: December 13, 2018
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Caroline RENN, Oliver ELSNER, Julia GANSEL, Christian SCHEUFLER, Uwe WALZ
  • Patent number: 10040969
    Abstract: A process for the preparation of composite filler particles, comprising: (a) coating a particulate filler having a median particle size (D50) of from 1 to 1200 nm; (b) agglomerating the coated particulate filler, for providing a granulation of the coated particulate filler wherein the granulation contains the coated particulate filler particles whereby the at least one coating layer may be crosslinked by crosslinking groups obtained by reacting the reactive groups and optionally a further crosslinking agent.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: August 7, 2018
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Simon Stelzig, Jörg Kempter, Stephanie Noerpel, Joachim E. Klee, Andreas Facher, Uwe Walz, Christoph Weber
  • Publication number: 20170296442
    Abstract: An aqueous dental glass ionomer composition comprising (A) a reactive particulate glass, (B) a water-soluble polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, (C) a water-soluble, hydrolysis-stable monomer having a single polymerizable double bond and optionally a carboxylic acid group or hydroxyl group; (D) a water-soluble, hydrolysis-stable polymerizable crosslinker having at least two polymerizable carbon-carbon double bonds; and (E) a polymerization initiator system.
    Type: Application
    Filed: April 13, 2017
    Publication date: October 19, 2017
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Caroline RENN, Oliver Elsner, Florian Szillat, Joachim Klee, Christoph Weber, Uwe Walz, Christian Scheufler, Andrew Lichkus, Xiaoming Jin
  • Publication number: 20170296441
    Abstract: The present disclosure relates to an aqueous dental glass ionomer composition comprising a reactive particulate glass, a water-soluble, polymerizable polymer which is reactive with the particulate glass in a cement reaction, a hydrolysis-stable, water-soluble monomer having a single polymerizable double bond and optionally a carboxylic acid group or hydroxyl group; and a polymerization initiator system, wherein the polymerizable polymer is obtainable by a process comprising a step of polymerizing a mixture comprising a first polymerizable monomer comprising at least one optionally protected carboxylic acid group and a first polymerizable organic moiety, and optionally a second copolymerizable monomer comprising one or more optionally protected primary and/or secondary hydroxyl and/or amino group(s) and a second polymerizable organic moiety, for obtaining an water-soluble polymer; a step of coupling to the water-soluble polymer a compound having a olymerizable moiety and a functional group reactive with an opt
    Type: Application
    Filed: April 13, 2017
    Publication date: October 19, 2017
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Caroline RENN, Oliver Elsner, Maximilian Maier, Florian Szillat, Joachim Klee, Christoph Weber, Uwe Walz, Christian Scheufler, Helmut Ritter, Andrew Lichkus, Xiaoming Jin
  • Publication number: 20160024334
    Abstract: A process for the preparation of composite filler particles, comprising: (a) coating a particulate filler having a median particle size (D50) of from 1 to 1200 nm; (b) agglomerating the coated particulate filler, for providing a granulation of the coated particulate filler wherein the granulation contains the coated particulate filler particles whereby the at least one coating layer may be crosslinked by crosslinking groups obtained by reacting the reactive groups and optionally a further crosslinking agent.
    Type: Application
    Filed: October 1, 2015
    Publication date: January 28, 2016
    Applicant: DENTSPLY INTERNATIONAL INC.
    Inventors: Simon STELZIG, Jörg KEMPTER, Stephanie NOERPEL, Joachim E. KLEE, Andreas, Uwe WALZ, Christoph WEBER
  • Patent number: 9193849
    Abstract: A process for the preparation of composite filler particles, comprising: (a) coating a particulate filler having a median particle size (D50) of from 1 to 1200 nm; (b) agglomerating the coated particulate filler, for providing a granulation of the coated particulate filler wherein the granulation contains the coated particulate filler particles whereby the at least one coating layer may be crosslinked by crosslinking groups obtained by reacting the reactive groups and optionally a further crosslinking agent.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: November 24, 2015
    Assignee: DENTSPLY International Inc.
    Inventors: Simon Stelzig, Jörg Kempter, Stephanie Noerpel, Joachim E. Klee, Andreas Facher, Uwe Walz, Christoph Weber
  • Publication number: 20150105489
    Abstract: The invention concerns a dental composition comprising bisacrylamides that are polymerizable by free-radical polymerization and by Michael-addition polymerization with amities. The application of polymerization and addition polymerization with amines opens the possibility to completely reacted materials that have no oxygen inhibited layers. The claimed bisacrylamides have an improved hydrolytic stability.
    Type: Application
    Filed: December 18, 2014
    Publication date: April 16, 2015
    Inventors: Joachim E. KLEE, Uwe WALZ, Christoph WEBER
  • Publication number: 20130158157
    Abstract: A process for the preparation of composite filler particles, comprising: (a) coating a particulate filler having a median particle size (D50) of from 1 to 1200 nm; (b) agglomerating the coated particulate filler, for providing a granulation of the coated particulate filler wherein the granulation contains the coated particulate filler particles whereby the at least one coating layer may be crosslinked by crosslinking groups obtained by reacting the reactive groups and optionally a further crosslinking agent.
    Type: Application
    Filed: December 14, 2012
    Publication date: June 20, 2013
    Applicant: DENTSPLY INTERNATIONAL INC.
    Inventors: Simon STELZIG, Jörg Kempter, Stephanie Noerpel, Joachim E. KLEE, Andreas FACHER, Uwe WALZ, Christoph WEBER
  • Patent number: 8198388
    Abstract: One-part self-etching, self-priming dental adhesive composition having a pH of at most 2, which comprises (a) a polymerizable acidic phosphoric acid ester monomer (b) one or more polymerizable acidic monomers (c) a polymerizable N-substituted alkylacrylic or acrylic acid amide monomer; (d) optionally an organic and/or inorganic acid; (e) an organic water soluble solvent and/or water; and (f) polymerization initiator, inhibitor and stabilizer.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: June 12, 2012
    Assignee: Dentsply International Inc.
    Inventors: Joachim E. Klee, Uwe Lehmann, Uwe Walz
  • Publication number: 20110288196
    Abstract: The invention concerns a dental composition comprising bisacrylamides that are polymerizable by free-radical polymerization and by Michael-addition polymerization with amines. The application of polymerization and addition polymerization with amines opens the possibility to completely reacted materials that have no oxygen inhibited layers. The claimed bisacrylamides have an improved hydrolytic stability.
    Type: Application
    Filed: August 2, 2011
    Publication date: November 24, 2011
    Inventors: Uwe Walz, Joachim E. Klee