Patents by Inventor Joachim E. Klee
Joachim E. Klee 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: 12589055Abstract: The present invention is related to a dental composition comprising: (a) at least one polymerizable monomer having at least one ethylenically unsaturated group; (b) a radical initiator system comprising (i) a photosensitizer having an absorption maximum ranging from 400 nm to 800 nm; (ii) a coinitiator; and (iii) a compound of the following formula (1): wherein R1 and R2, which may be the same or different, independently represent a hydrogen atom, a C1-6 alkyl group, or a C1-6 alkoxy group; R3 and R4, which may be the same or different, independently represent a hydrogen atom, or a C1-6 alkyl group, or R3 and R4 may represent a bond so that the carbon atoms to which R3 and R4 are bonded are linked by a double bond; R5 and R6, which may be the same or different, independently represent a hydrogen atom, or a C1-6 alkyl group, or R5 and R6 may represent a bond so that the carbon atoms to which R5 and R6 are bonded are linked by a double bond; L represents a single bond or a group —CRH—, whereinType: GrantFiled: September 10, 2020Date of Patent: March 31, 2026Assignee: Dentsply Sirona Inc.Inventors: Joachim E. Klee, Florian Szillat, Jacques Lalevée, Julie Kirschner, Fabrice Morlet-Savary
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Patent number: 12491141Abstract: The present invention is related to a dental root canal filling composition comprising at least one di- or polyepoxide; at least one primary monoamine; and at least one diamine; wherein the at least one primary monoamine comprises at least one cyclic non-aromatic hydrocarbon group and at least one primary amino group; wherein said at least one primary amino group is directly attached to said at least one cyclic non-aromatic hydrocarbon group; or wherein said at least one primary amino group is comprised by a hydrocarbon moiety, which is directly attached to said at least one cyclic non-aromatic hydrocarbon group.Type: GrantFiled: December 17, 2020Date of Patent: December 9, 2025Assignee: Dentsply Sirona Inc.Inventors: Joachim E. Klee, Matthias Worm
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Patent number: 12396929Abstract: Disclosed herein is a dental material containing a polymerizable hydrolysis stable polycyclic amide monomer. The present disclosure relates to methods of making and use of the polymerizable hydrolysis stable polycyclic amide monomer for the preparation of a dental polymerizable hydrolysis stable polycyclic amide monomer composition. The present disclosure further relates to a cured dental material obtained by polymerizing the dental material.Type: GrantFiled: April 9, 2020Date of Patent: August 26, 2025Assignee: Dentsply Sirona Inc.Inventors: Helmut Ritter, Joachim E. Klee, Hui Lu, Kira Neuhaus
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Publication number: 20250161169Abstract: Described herein is a dental composition containing a polymerizable compound having at least one optionally derivatized ?-hydroxy urethane unit. The polymerizable compound having at least one optionally derivatized ?-hydroxy urethane unit is obtained without use of organo-metal catalysts and isocyanates and by a reaction between an at least one component A having at least one cyclic carbonate group with an at least one component B having at least one of primary amine functional group and secondary amine functional group. The present disclosure relates to use of the polymerizable compound having at least one optionally derivatized ?-hydroxy urethane unit for the preparation of a dental composition, in particular a dental composite, a glass ionomer, a dental cement, a dental sealant, and a dental adhesive.Type: ApplicationFiled: October 21, 2024Publication date: May 22, 2025Applicant: DENTSPLY SIRONA Inc.Inventors: Joachim E. KLEE, Matthias WORM, Christian SCHEUFLER, Oilver ELSNER, Thomas TIGGES
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Patent number: 12268763Abstract: The present invention is related to a curable dental two-pack composition comprising: (a) a first paste comprising (a-1) one or more crosslinker having at least four primary amino groups; and (b) a second paste comprising (b-1) one or more compounds polymerizable with a crosslinker of the first paste in a step-growth polymerization reaction; wherein (b-1) the compound polymerizable with the crosslinker compounds is a compound of the following formula (II): wherein A is a hydrocarbon group which may contain one or more hetero atoms selected from oxygen and sulfur atoms; R1 is as defined in claim 1; R4, R5, R6 and R7 are independent from each other and represent a hydrogen atom or a methyl group and the Y, which are independent from each other represent a single bond, an oxygen atom, a sulfur atom, an ester bond or a urethane bond.Type: GrantFiled: November 8, 2019Date of Patent: April 8, 2025Assignee: Dentsply Sirona Inc.Inventors: Matthias Worm, Joachim E. Klee, Helmut Ritter, Özgür Capar, Laura Hartmann, Moniralsadat Tabatabai
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Publication number: 20250082550Abstract: A dental composition comprising (a) a polymerizable monomer; and (b) an initiator system comprising (b-1) a sensitizer or an oxidizing agent of a redox initiator system; and (b-2) a coinitiator of the following formula (I): Q-X ??(I) ?wherein Q and X are as defined in claim 1.Type: ApplicationFiled: November 4, 2024Publication date: March 13, 2025Applicant: Dentsply Sirona Inc.Inventors: Joachim E. Klee, Oliver Elsner, Florian Szillat, Caroline Renn
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Patent number: 12151005Abstract: Described herein is a dental composition containing a polymerizable compound having at least one optionally derivatized ?-hydroxy urethane unit. The polymerizable compound having at least one optionally derivatized ?-hydroxy urethane unit is obtained without use of organo-metal catalysts and isocyanates and by a reaction between an at least one component A having at least one cyclic carbonate group with an at least one component B having at least one of primary amine functional group and secondary amine functional group. The present disclosure relates to use of the polymerizable compound having at least one optionally derivatized ?-hydroxy urethane unit for the preparation of a dental composition, in particular a dental composite, a glass ionomer, a dental cement, a dental sealant, and a dental adhesive.Type: GrantFiled: December 17, 2019Date of Patent: November 26, 2024Assignee: DENTSPLY SIRONA INC.Inventors: Joachim E. Klee, Matthias Worm, Christian Scheufler, Oliver Elsner, Thomas Tigges
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Patent number: 12097271Abstract: Dental root canal filling composition comprising (a) one or more diepoxides; (b) one or more primary monoamines and/or disecondary diamines; (c) a particulate filler, wherein the one or more diepoxides are selected from compounds of the following formula (I) or a salt thereof:Type: GrantFiled: April 9, 2020Date of Patent: September 24, 2024Assignee: DENTSPLY SIRONA INC.Inventors: Joachim E. Klee, Matthias Worm
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Publication number: 20240180791Abstract: The present invention relates to a dental composition comprising a specific radically polymerizable compound and a radical initiator system. Furthermore, the present invention relates to the specific radically polymerizable compound and its use in a dental composition. The specific radically polymerizable compound of the present invention has an allyl (meth)acrylamide group and a phosphoric acid ester group.Type: ApplicationFiled: February 8, 2024Publication date: June 6, 2024Applicant: DENTSPLY SIRONA Inc.Inventors: Christoph FIK, Maximilian MAIER, Joachim E. KLEE, Christian SCHEUFLER
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Patent number: 11931432Abstract: The present invention relates to a dental composition comprising a specific radically polymerizable compound and a radical initiator system. Furthermore, the present invention relates to the specific radically polymerizable compound and its use in a dental composition. The specific radically polymerizable compound of the present invention has an allyl (meth)acrylamide group and a phosphoric acid ester group.Type: GrantFiled: December 13, 2017Date of Patent: March 19, 2024Assignee: DENTSPLY SIRONA INC.Inventors: Christoph Fik, Maximilian Maier, Joachim E. Klee, Christian Scheufler
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Patent number: 11883510Abstract: The present invention relates to a dental composition comprising a photoinitiator system comprising a particulate carrier supporting a coinitiator covalently bonded to the surface of the carrier. Furthermore, the present invention relates to a use of the particulate carrier in a dental composition. The particulate carrier displays multiple covalently bonded tertiary amino groups and/or tertiary phosphine groups on the surface, for crosslinking monomers, oligomers and/or polymers having one or more polymerizable double bonds.Type: GrantFiled: October 4, 2022Date of Patent: January 30, 2024Assignee: DENTSPLY SIRONA INC.Inventors: Maximilian Maier, Joachim E. Klee, Christian Scheufler, Caroline Renn, Florian Szillat
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Patent number: 11844848Abstract: The present invention relates to a photocurable dental composition comprising a specific polymerization initiator system containing the combination of a photoinitiator compound and a coinitiator compound being a sulfinate compound or a sulfonate compound. The present invention also relates to the use of this polymerization initiator system in a photocurable dental composition.Type: GrantFiled: October 9, 2018Date of Patent: December 19, 2023Assignee: DENTSPLY SIRONA INC.Inventors: Florian Szillat, Maximilian Maier, Caroline Renn, Oliver Elsner, Joachim E. Klee, Jorg Kempter, Jacques Lalevee, Mariem Bouzrati-Zerelli, Julie Kirschner
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Publication number: 20230132972Abstract: The present invention relates to a process for the preparation of a dental resin-modified glass ionomer composition comprising a polymerizable polyacidic polymer, wherein the process comprises the following steps as further defined in claim 1.Type: ApplicationFiled: December 11, 2017Publication date: May 4, 2023Applicant: DENTSPLY SIRONA Inc.Inventors: Christian SCHEUFLER, Maximilian MAIER, Joachim E. KLEE, Caroline RENN
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Patent number: 11628125Abstract: The present invention relates to an initiator modified polyacidic polymer having a covalently bonded initiator compound, and to a dental resin-modified glass ionomer composition comprising this polyacidic polymer. Furthermore, the present invention relates to a use of the initiator modified polyacidic polymer for the preparation of a dental composition. The covalently bonded initiator compound of the initiator modified polyacidic polymer may be any compound of a redox initiator system, a photoinitiator system, for example a Norrish type I or II photoinitiator, an electron donor component, a sensitizer component or a coinitiator component.Type: GrantFiled: August 30, 2018Date of Patent: April 18, 2023Assignee: DENTSPLY SIRONA INC.Inventors: Maximilian Maier, Joachim E. Klee, Christian Scheufler, Caroline Renn, Florian Szillat
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Publication number: 20230100120Abstract: The present invention relates to a dental composition comprising a photoinitiator system comprising a particulate carrier supporting a coinitiator covalently bonded to the surface of the carrier. Furthermore, the present invention relates to a use of the particulate carrier in a dental composition. The particulate carrier displays multiple covalently bonded tertiary amino groups and/or tertiary phosphine groups on the surface, for crosslinking monomers, oligomers and/or polymers having one or more polymerizable double bonds.Type: ApplicationFiled: October 4, 2022Publication date: March 30, 2023Applicant: DENTSPLY SIRONA INC.Inventors: Maximilian MAIER, Joachim E. KLEE, Christian SCHEUFLER, Caroline RENN, Florian SZILLAT
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Publication number: 20230014155Abstract: The present invention is related to a dental root canal filling composition comprising at least one di- or polyepoxide; at least one primary monoamine; and at least one diamine; wherein the at least one primary monoamine comprises at least one cyclic non-aromatic hydrocarbon group and at least one primary amino group; wherein said at least one primary amino group is directly attached to said at least one cyclic non-aromatic hydrocarbon group; or wherein said at least one primary amino group is comprised by a hydrocarbon moiety, which is directly attached to said at least one cyclic non-aromatic hydrocarbon group.Type: ApplicationFiled: December 17, 2020Publication date: January 19, 2023Applicant: DENTSPLY SIRONA Inc.Inventors: Joachim E. KLEE, Matthias WORM
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Publication number: 20230000727Abstract: The present invention is related to a dental composition comprising at least one polymerizable monomer having at least one ethylenically unsaturated group; and a radical initiator system comprising a photosensitizer haying an absorption maximum ranging from 400 nm to 800 nm; and at least one CH-acidic compound as coinitiator.Type: ApplicationFiled: August 28, 2020Publication date: January 5, 2023Applicant: DENTSPLY SIRONA Inc.Inventors: Joachim E. KLEE, Florian SZILLAT, Julie KIRSCHNER, Jacques LALEVEE
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Publication number: 20220331209Abstract: The present invention is related to a dental composition comprising: (a) at least one polymerizable monomer having at least one ethylenically unsaturated group; (b) a radical initiator system comprising (i) a photosensitizer having an absorption maximum ranging from 400 nm to 800 nm; (ii) a coinitiator; and (iii) a compound of the following formula (1): wherein R1 and R2, which may be the same or different, independently represent a hydrogen atom, a C1-6 alkyl group, or a C1-6 alkoxy group; R3 and R4, which may be the same or different, independently represent a hydrogen atom, or a C1-6 alkyl group, or R3 and R4 may represent a bond so that the carbon atoms to which R3 and R4 are bonded are linked by a double bond; R5 and R6, which may be the same or different, independently represent a hydrogen atom, or a C1-6 alkyl group, or R5 and R6 may represent a bond so that the carbon atoms to which R5 and R6 are bonded are linked by a double bond; L represents a single bond or a group —CRH—, whereinType: ApplicationFiled: September 10, 2020Publication date: October 20, 2022Applicant: DENTSPLY SIRONA Inc.Inventors: Joachim E. KLEE, Florian SZILLAT, Jacques LALEVÉE, Julie KIRSCHNER, Fabrice MORLET-SAVARY
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Patent number: 11433004Abstract: The present invention relates to a dental composition comprising (i) an acidic polymerizable compound of the following formula (Ia), (Ib) or (Ic): wherein X, Y, Y?, Z, L, R2, R3 and R4 are as defined in claim 1; and (ii) an initiator system. Furthermore, the present invention relates to the use of the polymerizable compound of formula (I) for the preparation of a dental composition.Type: GrantFiled: May 19, 2017Date of Patent: September 6, 2022Assignee: DENTSPLY SIRONA INC.Inventors: Christoph Fik, Sven Pohle, Joachim E. Klee, Marina Barudzija, Magnus Schmidt, Markus Ringwald
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Publication number: 20220202658Abstract: Disclosed herein is a dental material containing a polymerizable hydrolysis stable polycyclic amide monomer. The present disclosure relates to methods of making and use of the polymerizable hydrolysis stable polycyclic amide monomer for the preparation of a dental polymerizable hydrolysis stable polycyclic amide monomer composition. The present disclosure further relates to a cured dental material obtained by polymerizing the dental material.Type: ApplicationFiled: April 9, 2020Publication date: June 30, 2022Applicant: DENTSPLY SIRONA Inc.Inventors: Helmut RITTER, Joachim E. KLEE, Hui LU, Kira NEUHAUS