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).
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Patent number: 11918664Abstract: 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: GrantFiled: June 10, 2021Date of Patent: March 5, 2024Assignee: DENTSPLY SIRONA INC.Inventors: Florian Szillat, Caroline Renn, Christoph Weber, Uwe Walz, Joachim Klee
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Patent number: 11857650Abstract: 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: GrantFiled: June 30, 2017Date of Patent: January 2, 2024Assignee: DENTSPLY SIRONA INC.Inventors: Christoph Weber, Uwe Walz, Stephanie Noerpel
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Publication number: 20220031576Abstract: 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: ApplicationFiled: November 27, 2019Publication date: February 3, 2022Applicant: DENTSPLY SIRONA INC.Inventors: Stephanie NOERPEL, Thomas TIGGES, Uwe WALZ, Christoph WEBER
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Publication number: 20210308019Abstract: 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: ApplicationFiled: June 10, 2021Publication date: October 7, 2021Applicant: DENTSPLY SIRONA Inc.Inventors: SZILLAT Florian, Caroline Renn, Christoph Weber, Uwe Walz, Joachim Klee
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Patent number: 11071693Abstract: 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: GrantFiled: December 13, 2017Date of Patent: July 27, 2021Assignee: DENTSPLY SIRONA Inc.Inventors: Szillat Florian, Caroline Renn, Christoph Weber, Uwe Walz, Joachim Klee
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Patent number: 10624821Abstract: 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 functionalType: GrantFiled: June 13, 2016Date of Patent: April 21, 2020Assignee: DENTSPLY SIRONA Inc.Inventors: Caroline Renn, Oliver Elsner, Julia Gansel, Christian Scheufler, Uwe Walz, Christoph Weber, Joachim E. Klee, Maxmilian Maier
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Patent number: 10610462Abstract: 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 opType: GrantFiled: April 13, 2017Date of Patent: April 7, 2020Assignee: 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
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Publication number: 20190343730Abstract: 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: ApplicationFiled: December 13, 2017Publication date: November 14, 2019Applicant: DENTSPLY SIRONA Inc.Inventors: SZILLAT Florian, Caroline RENN, Christoph WEBER, Uwe WALZ, Joachim Klee
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Publication number: 20190231648Abstract: 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: ApplicationFiled: June 30, 2017Publication date: August 1, 2019Applicant: DENTSPLY SIRONA inc.Inventors: Christoph WEBER, Uwe WALZ, Stephanie NOERPEL
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Patent number: 10272017Abstract: 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: GrantFiled: April 13, 2017Date of Patent: April 30, 2019Assignee: DENTSPLY SIRONA Inc.Inventors: Caroline Renn, Oliver Elsner, Florian Szillat, Joachim Klee, Christoph Weber, Uwe Walz, Christian Scheufler, Andrew Lichkus, Xiaoming Jin
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Publication number: 20180353391Abstract: 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 functionalType: ApplicationFiled: June 13, 2016Publication date: December 13, 2018Applicant: DENTSPLY SIRONA Inc.Inventors: Caroline RENN, Oliver ELSNER, Julia GANSEL, Christian SCHEUFLER, Uwe WALZ
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Patent number: 10040969Abstract: 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: GrantFiled: October 1, 2015Date of Patent: August 7, 2018Assignee: DENTSPLY SIRONA Inc.Inventors: Simon Stelzig, Jörg Kempter, Stephanie Noerpel, Joachim E. Klee, Andreas Facher, Uwe Walz, Christoph Weber
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Publication number: 20170296442Abstract: 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: ApplicationFiled: April 13, 2017Publication date: October 19, 2017Applicant: DENTSPLY SIRONA Inc.Inventors: Caroline RENN, Oliver Elsner, Florian Szillat, Joachim Klee, Christoph Weber, Uwe Walz, Christian Scheufler, Andrew Lichkus, Xiaoming Jin
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Publication number: 20170296441Abstract: 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 optType: ApplicationFiled: April 13, 2017Publication date: October 19, 2017Applicant: 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
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Publication number: 20160024334Abstract: 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: ApplicationFiled: October 1, 2015Publication date: January 28, 2016Applicant: DENTSPLY INTERNATIONAL INC.Inventors: Simon STELZIG, Jörg KEMPTER, Stephanie NOERPEL, Joachim E. KLEE, Andreas, Uwe WALZ, Christoph WEBER
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Patent number: 9193849Abstract: 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: GrantFiled: December 14, 2012Date of Patent: November 24, 2015Assignee: DENTSPLY International Inc.Inventors: Simon Stelzig, Jörg Kempter, Stephanie Noerpel, Joachim E. Klee, Andreas Facher, Uwe Walz, Christoph Weber
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Publication number: 20150105489Abstract: 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: ApplicationFiled: December 18, 2014Publication date: April 16, 2015Inventors: Joachim E. KLEE, Uwe WALZ, Christoph WEBER
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Publication number: 20130158157Abstract: 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: ApplicationFiled: December 14, 2012Publication date: June 20, 2013Applicant: DENTSPLY INTERNATIONAL INC.Inventors: Simon STELZIG, Jörg Kempter, Stephanie Noerpel, Joachim E. KLEE, Andreas FACHER, Uwe WALZ, Christoph WEBER
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Patent number: 8198388Abstract: 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: GrantFiled: December 15, 2004Date of Patent: June 12, 2012Assignee: Dentsply International Inc.Inventors: Joachim E. Klee, Uwe Lehmann, Uwe Walz
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Publication number: 20110288196Abstract: 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: ApplicationFiled: August 2, 2011Publication date: November 24, 2011Inventors: Uwe Walz, Joachim E. Klee