Patents by Inventor Andreas R. Maurer
Andreas R. Maurer 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: 10952933Abstract: The invention relates to a kit of parts comprising a Base Paste (B) and a Catalyst Paste (C), Base Paste (B) comprising a cationically hardenable component, Catalyst Paste (C) comprising a starter component suitable to contribute to the hardening of the cationically hardenable compound, the composition obtained when combining the compositions of Base Paste (B) and Catalyst Paste (C) comprising in addition a porous water-adsorbing component and water, the porous water-adsorbing component being selected from molecular sieves, zeolites, silica gel and mixtures thereof, wherein either the porous water-adsorbing component is present in Base Paste (B) and the water is present in Catalyst Paste (C), or the water-adsorbing component is present in Catalyst Paste (C) and the water is present in Base Paste (B).Type: GrantFiled: June 30, 2016Date of Patent: March 23, 2021Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Joachim Zech, Hendrik Grupp, Christoph Schulte, Andreas R. Maurer, Peter U. Osswald
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Patent number: 10751262Abstract: The invention relates to a curable dental composition comprising a cationically hardenable compound (A) comprising at least two aziridine moieties, a starter (B) being suitable to cure the hardenable compound (A), polymeric particles as filler component (C), the polymeric particles having a maximum particle size of 150 ?m or below and the component(s) the polymeric particles are made of being based on fluoropolymers comprising more than 99% monomer repeating units of tetra fluoro ethylene. The invention also relates to the use of such composition for producing a dental impression material or a dental retraction material.Type: GrantFiled: December 8, 2015Date of Patent: August 25, 2020Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Andreas R. Maurer, Hendrik Grupp, Joachim W. Zech, Arne Thaler, Kai H. Lochhaas, Klaus Hintzer, Christoph Schulte
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Patent number: 10729622Abstract: A process for taking a dental impression and/or conducting a dental retraction. The process includes the steps of: (a) providing a composition (A) having the consistency (a1), composition (A) including curable components, and a catalyst suitable to initiate or catalyze the curing of the curable components, composition (A) being contained in a device, (b) applying a portion (I) of composition (A) with a consistency (a2) into the sulcus of a tooth, (c) applying a portion (II) of composition (A) with a consistency (a1) in contact with composition (A) applied in step (b), (d) removing portion (I) together with portion (II) of composition (A) from the surface of the tooth, consistency (a2) being higher than consistency (a1).Type: GrantFiled: May 19, 2016Date of Patent: August 4, 2020Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Andreas R. Maurer, Joachim W. Zech, Christoph Schulte, Peter U. Osswald, Rudolf Schmid, Hendrik Grupp, Marc Peuker, Helmut Pauser, Manfred Harre, Andreas J. Boehm
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Patent number: 10682290Abstract: The present invention relates to a kit of parts comprising Paste (A), Paste (B) and Paste (C), the pastes being characterized as follows: Paste (A) comprising at least one polyorganosiloxane with at least two olefinically unsaturated groups, and at least one organohydrogenpolysiloxane, at least one alkylsiloxane having at least one carbinol, silanol, alkoxy, carboxyl or amino group, optionally filler(s) and optionally additive(s); Paste (B) comprising at least one polyorganosiloxane optionally with olefinically unsaturated groups, at least one addition cure catalyst, optionally at least one alkylsiloxane having at least one carbinol, silanol, alkoxy, carboxyl or amino group, optionally filler(s) and optionally additive(s) Paste (C) comprising a softener, a condensation cure catalyst, optionally filler(s), and optionally additive(s) optionally at least one polyorganosiloxane optionally with olefinically unsaturated groups.Type: GrantFiled: May 23, 2016Date of Patent: June 16, 2020Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Henning Hoffmann, Peter U. Osswald, Joachim W. Zech, Andreas R. Maurer
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Patent number: 10548819Abstract: The invention features a composition which can or is to be used in a dental retraction, the composition comprising liquid a liquid and a layer type 1:1 silicate mineral and a layer type 2:1 silicate mineral in a ratio from about 50/50 to 5/95 wt.-% with respect to each other. The invention also relates to a container containing the dental retraction composition and to a kit comprising parts A and B, wherein part A comprises the dental retraction composition and part B comprises at least one accessory selected from the group of applier, dental impression material, retraction cap(s), a container for storing and dispensing the composition and combinations thereof. The invention further features a process of dispensing a dental retraction composition, the process comprising the steps: providing a dental retraction composition contained in a container, placing the container in an applier, and using the applier for dispensing the dental retraction composition out of the container.Type: GrantFiled: May 24, 2010Date of Patent: February 4, 2020Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Andreas R. Maurer, Christoph Schulte, Rüdiger Hampe, Johannes M. Leykauff, Helmut Pauser
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Publication number: 20190110960Abstract: The present invention relates to a hardenable dental composition comprising (A) a curable component comprising curable moieties (AC), (B) a crosslinker component as component (B) capable of crosslinking said component (A), (C) a catalyst as component (C) capable of catalyzing a crosslinking reaction of component (A) and component (B), (D) polymeric particles as filler component (D), the polymeric particles having a maximum particle size of 150 ?m or below and being composed of organic polymers, silicone elastomers or a combination or mixture thereof and preferably (E1) an inorganic filler component having a BET surface from 50 to 400 m2/g. The invention also relates to the use of a polymeric particulate filler component (D) for producing a hardenable dental composition, the hardenable dental composition being in particular useful as dental impression or dental retraction material or for dental impression or dental retraction purposes.Type: ApplicationFiled: December 3, 2015Publication date: April 18, 2019Inventors: Andreas R. Maurer, Peter Bissinger, Christoph Schulte, Arne Thaler, Joachim W. Zech, Johann Fetz, Peter U. Osswald, Johannes M. Leykauff
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Patent number: 10195120Abstract: The invention relates to a curable dental retraction composition comprising alginate and a solvent, with the proviso that essentially no crosslinker in an amount effective to start setting of the curable dental retraction composition is present. The invention also relates to a container containing said composition and to a kit comprising two parts, wherein the first part comprises the curable dental retraction composition of the present invention and the second part comprises a crosslinker being able to start setting of the dental retraction composition.Type: GrantFiled: September 9, 2008Date of Patent: February 5, 2019Assignee: 3M Innovative Properties CompanyInventors: Ruediger Hampe, Thomas Klettke, Andreas R. Maurer, Christoph Schulte
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Publication number: 20180221248Abstract: The invention is directed to a process for taking a dental impression and/or conducting a dental retraction, the process comprising the steps of (a) providing a composition (A) having the consistency (a1), composition (A) comprising curable components, and a catalyst suitable to initiate or catalyze the curing of the curable components, composition (A) being contained in a device, (b) applying a portion (I) of composition (A) with a consistency (a2) into the sulcus of a tooth, (c) applying a portion (II) of composition (A) with a consistency (a1) in contact with composition (A) applied in step (b), (d) removing portion (I) together with portion (II) of composition (A) from the surface of the tooth, consistency (a2) being higher than consistency (a1).Type: ApplicationFiled: May 19, 2016Publication date: August 9, 2018Inventors: Andreas R. Maurer, Joachim W. Zech, Christoph Schulte, Peter U. Osswald, Rudolf Schmid, Hendrik Grupp, Marc Peuker, Helmut Pauser, Manfred Harre, Andreas J. Boehm
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Publication number: 20180200156Abstract: The invention relates to a kit of parts comprising a Base Paste (B) and a Catalyst Paste (C), Base Paste (B) comprising a cationically hardenable component, Catalyst Paste (C) comprising a starter component suitable to contribute to the hardening of the cationically hardenable compound, the composition obtained when combining the compositions of Base Paste (B) and Catalyst Paste (C) comprising in addition a porous water-adsorbing component and water, the porous water-adsorbing component being selected from molecular sieves, zeolites, silica gel and mixtures thereof, wherein either the porous water-adsorbing component is present in Base Paste (B) and the water is present in Catalyst Paste (C), or the water-adsorbing component is present in Catalyst Paste (C) and the water is present in Base Paste (B).Type: ApplicationFiled: June 30, 2016Publication date: July 19, 2018Inventors: Joachim Zech, Hendrik Grupp, Christoph Schulte, Andreas R. Maurer, Peter U. Osswald
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Publication number: 20180125764Abstract: The present invention relates to a kit of parts comprising Paste (A), Paste (B) and Paste (C), the pastes being characterized as follows: Paste (A) comprising at least one polyorganosiloxane with at least two olefinically unsaturated groups, and at least one organohydrogenpolysiloxane, at least one alkylsiloxane having at least one carbinol, silanol, alkoxy, carboxyl or amino group, optionally filler(s) and optionally additive(s); Paste (B) comprising at least one polyorganosiloxane optionally with olefinically unsaturated groups, at least one addition cure catalyst, optionally at least one alkylsiloxane having at least one carbinol, silanol, alkoxy, carboxyl or amino group, optionally filler(s) and optionally additive(s) Paste (C) comprising a softener, a condensation cure catalyst, optionally filler(s), and optionally additive(s) optionally at least one polyorganosiloxane optionally with olefinically unsaturated groups.Type: ApplicationFiled: May 23, 2016Publication date: May 10, 2018Inventors: Henning Hoffmann, Peter U. Osswald, Joachim W. Zech, Andreas R. Maurer
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Publication number: 20170326038Abstract: The invention relates to a curable dental composition comprising a cationically hardenable compound (A) comprising at least two aziridine moieties, a starter (B) being suitable to cure the hardenable compound (A), polymeric particles as filler component (C), the polymeric particles having a maximum particle size of 150 ?m or below and the component(s) the polymeric particles are made of being based on fluoropolymers comprising more than 99% monomer repeating units of tetra fluoro ethylene. The invention also relates to the use of such composition for producing a dental impression material or a dental retraction material.Type: ApplicationFiled: December 8, 2015Publication date: November 16, 2017Inventors: Andreas R. Maurer, Hendrik Grupp, Joachim W. Zech, Arne Thaler, Kai H. Lochhaas, Klaus Hintzer, Christoph Schulte
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Publication number: 20170037166Abstract: The invention provides a method for making a fluoropolymer and a method for preparing a fluorinated surfactant.Type: ApplicationFiled: October 21, 2016Publication date: February 9, 2017Inventors: Klaus Hintzer, Michael Juergens, Harald Kaspar, Herbert Koenigsmann, Andreas R. Maurer, Werner Schwertfeger, Tilman C. Zipplies
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Publication number: 20160317265Abstract: A device for dispensing a dental paste comprises a first nozzle for delivering the paste and a second nozzle for delivering a gas stream. The device is adapted for simultaneously delivering the gas stream and the paste toward a working area. The invention helps minimizing efforts in a dental treatment and maximizing the quality of that dental treatment.Type: ApplicationFiled: December 8, 2014Publication date: November 3, 2016Applicant: 3M Innovative Properties CompanyInventors: Andreas R. Maurer, Christoph Schulte, Helmut Pauser, Ruediger Hampe, Johannes M. Leykauff, Marc Peuker
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Publication number: 20160151125Abstract: A device for dispensing a dental material has a cartridge and a ball-shaped closure member. The cartridge and the closure member in combination form a rotary slide valve for selectively opening and closing a cartridge outlet for the dental material, such that the device can be operated between an operative position in which the cartridge outlet is open and a storage position in which the cartridge outlet is closed. The device further has a cannula which is removably receivable within the closure member. The cannula in the operative position of the device is mechanically locked against removal. The cannula further has an annular seal which in the operative position extends into the outlet.Type: ApplicationFiled: June 23, 2014Publication date: June 2, 2016Inventors: Helmut Pauser, Andreas R. Maurer
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Patent number: 8962708Abstract: The invention relates to a curable dental composition comprising a curable polyether group containing polymer as component (A), an initiator capable of initiating a curing reaction of component (A) as component (B) and a certain F-containing compound as component (C). The invention also relates to a method of production and use of the curable dental composition or a respective kit of parts for the preparation of or as impression material or for the preparation of crowns and bridges.Type: GrantFiled: June 9, 2010Date of Patent: February 24, 2015Assignee: 3M Innovative Properties CompanyInventors: Andreas R. Maurer, Christoph Schulte, Peter U. Osswald, Joachim W. Zech, Hendrik Grupp, Peter Bissinger
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Patent number: 8672678Abstract: A nozzle head (5) for a powder jet device (1), for use in applying dental material, comprises a first fluid flow path (8) for delivering a powder/fluid mixture to a first discharge nozzle (8A). A second fluid flow path (6) is provided for delivering a liquid to a second discharge nozzle (6A) located adjacent the first discharge nozzle (8A), so that the materials discharged by the first and second discharge nozzles combine at a desired location to form a dental composition. A nozzle-clearing member (10) is located inside the nozzle head and is movable to remove powder material from the first discharge nozzle when the flow of powder/fluid mixture to the nozzle ceases.Type: GrantFiled: May 28, 2009Date of Patent: March 18, 2014Assignee: 3M Innovative Properties CompanyInventors: Jens Gramann, Ruediger Hampe, Thomas Klettke, Ingo R. Haeberlein, Christoph Schulte, Andreas R. Maurer, Martin Goetzinger, Sebastian Guggenmos
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Patent number: 8633288Abstract: Compounds represented by formula (Rf-Q-X)s—Z. Each Rf is independently a partially fluorinated or fully fluorinated group selected from Rfa-(O)r—CHF—(CF2)n—; [Rfb-(O)tC(L)H—CF2—O]m—W—; CF3CFH—O—(CF2)p—; CF3—(O—CF2)z—; and CF3—O—(CF2)3—O—CF2—. Methods of reducing surface tension of a liquid, making foams, and treating a surface using the compounds are also disclosed.Type: GrantFiled: July 15, 2009Date of Patent: January 21, 2014Assignee: 3M Innovative Properties CompanyInventors: Rudolf J. Dams, Michael S. Terrazas, Klaus Hintzer, Zai-Ming Qiu, Miguel A. Guerra, Andreas R. Maurer, Harald Kaspar, Kai H. Lochhaas, Michael Juergens, Tilman C. Zipplies, Werner Schwertfeger
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Patent number: 8614265Abstract: A method of making a fluoropolymer dispersion by first providing a fluoropolymer dispersion comprising fluoropolymer particles and one or more fluorinated surfactants selected from fluorinated carboxylic acids or salts thereof having the general formula: [Rf—O-L-COO?]iXi+??(I) wherein L represents a linear fully fluorinated alkylene group, Rf represents a linear fully fluorinated aliphatic group or a linear fully fluorinated aliphatic group interrupted with one oxygen atom, Xi+ represents a cation having the valence i and i is 1, 2 or 3; then adding one or more non-fluorinated surfactants selected from anionic and non-ionic surfactants followed by reducing the total amount of the one or more fluorinated surfactants to an amount of not more than 500 ppm, for example not more than 250 ppm based on the total weight of the dispersion while maintaining or increasing the amount of solids in the dispersion.Type: GrantFiled: June 12, 2012Date of Patent: December 24, 2013Assignee: 3M Innovative Properties CompanyInventors: Klaus Hintzer, Michael Jürgens, Harald Kaspar, Herbert Koenigsmann, Kai Helmut Lochhaas, Andreas R. Maurer, Werner Schwertfeger, Tilman Zipplies, Ludwig Mayer, Michael C. Dadalas, George G. I. Moore, Jay F. Schulz, Richard M. Flynn
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Patent number: 8476385Abstract: A composition including at least one first divalent unit represented by formula: Each Rf is independently selected from the group consisting of Rfa—(O)t—CHF—(CF2)n—; [Rfa—(O)t—C(L)H—CF2—O]m—W—; Rfb-O—(CF2)p-; F(CkF2k)—(O—CkF2k)P—O—CF2—; and CF3—O—(CF2)3—(OCF(CF3)—CF2)Z—O-L1-. Each Q is independently selected from the group consisting of a bond, —C(O)—N(R1)—, and —C(O)—O—. Each X is independently selected from the group consisting of alkylene and arylalkylene, wherein alkylene and arylalkylene are each optionally interrupted by at least one ether linkage and optionally terminated by —N(R1)—C(O)— or —O—C(O)—. R and R1 are each independently selected from the group consisting of hydrogen and alkyl having from 1 to 4 carbon atoms. Rfa represents a partially or fully fluorinated alkyl group having from 1 to 10 carbon atoms and optionally interrupted with at least one oxygen atom. Rfb is selected from the group consisting of CF3CFH— and F(CjF2j)-.Type: GrantFiled: June 6, 2008Date of Patent: July 2, 2013Assignee: 3M Innovative Properties CompanyInventors: Rudolf J. Dams, Miguel A. Guerra, Klaus Hintzer, Michael Jürgens, Harald Kaspar, Kai H. Lochhaas, Andreas R. Maurer, Zai-Ming Qiu, Werner Schwertfeger, Michael S. Terrazas, Tilman C. Zipplies
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Patent number: 8466210Abstract: The present invention relates to a curable dental composition comprising a surfactant and an F-containing compound. The dental composition can be used e.g. as impression material and/or for the production of crown and bridges.Type: GrantFiled: December 17, 2008Date of Patent: June 18, 2013Assignee: 3M Innovative Properties CompanyInventors: Joachim W. Zech, Peter U. Osswald, Henning Hoffmann, Andreas R. Maurer, Peter Bissinger, Klaus Hintzer