Patents by Inventor Helmar B. Mayr
Helmar B. Mayr 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: 11826215Abstract: A system having at least one dental blank and an associated shade guide. The dental blank exhibits a non-uniform color shading, and the shade guide comprises a plurality of shade specimens each exhibiting a particular color shading representing the same color shading present in a partial area within the dental blank. A method of making a dental restoration includes the use of the system. The invention facilitates making a dental restoration having a color shading resembling the color shading of a natural tooth.Type: GrantFiled: June 22, 2020Date of Patent: November 28, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Malte Korten, Helmar B. Mayr
-
Patent number: 11534264Abstract: The invention relates to a preformed dental composite crown being characterized by its shape and chemical composition, the shape being characterized as follows: having an occlusal top surface and depending buccal, mesial, distal and lingual side surfaces, the side surfaces being connected to each other and forming a crown cervix, the wall thickness of the crown at the crown cervix being lower than 0.6 mm; at least two of opposing depending side surfaces having a concave shape; the chemical composition of the material the preformed dental composite crown is made of being a hardened composition comprising the following components: nano-filler(s) in an amount from 20 to 70 wt. %, resin matrix in an amount from 20 to 75 wt. %, wt. % with respect to the weight of the chemical composition, the resin matrix comprising urethane(meth)acrylate(s) and (meth)acrylate(s) not comprising a urethane moiety.Type: GrantFiled: March 9, 2020Date of Patent: December 27, 2022Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Andreas Herrmann, Gallus Schechner, Reinhold Hecht, Helmar B. Mayr, Malte Korten, Bernhard Hofmann, Gioacchino Raia, Till Meurer
-
Patent number: 11345087Abstract: A device for progressively building up an object from a light hardenable material. The device has a perforated build platform for the object. The build platform forms a build surface that faces a light source. The build platform and the light source are positionable relative to each other by computer control. The device is further configured for supplying the light hardenable material through the perforation of the build platform for building up the object. The invention enables the making of colored objects by stereolithography.Type: GrantFiled: July 28, 2017Date of Patent: May 31, 2022Assignee: 3M Innovative Properties CompanyInventors: Malte Korten, Gioacchino Raia, Adrian S. Eckert, Bernhard Hofmann, Christian A. Richter, Bastian P. Kirchner, Anja Friedrich, Helmar B. Mayr, Carsten Franke, Gallus Schechner
-
Patent number: 11339095Abstract: The invention relates to the use of a printing sol as construction material in an additive manufacturing process for producing a 3-dim article, the printing sol comprising solvent(s), nano-sized crystalline zirconia particles in an amount from 2 to 25 vol.-% with respect to the volume of the sol, the average primary particle size of the nano-sized crystalline zirconia particles being in a range up to 50 nm, a first monomer being a polymerizable surface modification agent represented by formula A-B, with A being capable of attaching to the surface of the nano-sized crystalline zirconia particles and B being a radiation curable group, optionally a second monomer, the second monomer comprising at least one radiation curable moiety but no acidic or silane group(s), photo initiator(s). The invention also relates to a ceramic article obtainable according to such a process.Type: GrantFiled: May 26, 2016Date of Patent: May 24, 2022Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Helmar B. Mayr, Malte Korten, Christine M. Andres, Brant U. Kolb, Holger Hauptmann, Gallus Schechner, Michael Jahns, Kathleen M. Humpal, Melissa A. Lackey, Paul D. Pennington
-
Patent number: 11202694Abstract: A method of making a dental article, has steps of (i) providing a layer of sinter powder, (ii) providing a solidifiable binder to form a circumferential fixation zone (114) which encloses a portion of the powder layer. The method further has the step of repeating steps (i) and (ii) with each fixation zone (114) of one layer being in contact with a fixation zone (114) of an adjacent layer such that a plurality of the fixation zones (114) together form a coherent hollow sleeve (116) extending across the layers. The corresponding plurality of powder portions in combination form a contiguous batch (118) of powder captured in the sleeve. The method facilitates the manufacturing of sintered dental articles.Type: GrantFiled: July 11, 2016Date of Patent: December 21, 2021Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Malte Korten, Helmar B. Mayr, Gioacchino Raia, Daniel D. Oberpertinger, Martin Goetzinger, Peter Bissinger
-
Publication number: 20210268730Abstract: A method of building up at least a first (10) and a second (20) physical workpiece from a light hardenable material (105) on a 3D printing device (100). The method has the steps of providing to the 3D printing device a first dataset for building up a first workpiece; starting a first print job based on the first dataset; providing to the same 3D printing device a second dataset for building up a second workpiece after the start the first print job; and starting a second print job based on the second dataset before finishing the first print job.Type: ApplicationFiled: June 26, 2019Publication date: September 2, 2021Inventors: Malte Korten, Gioacchino Raia, Adrian S. Eckert, Helmar B. Mayr, Dietmar Blees
-
Patent number: 11071607Abstract: A method of building up a dental object includes steps of (i) determining the three-dimensional shape of the object; (ii) mixing at least a first and a second component to form a hardenable composition; (iii) depositing the hardenable composition through a nozzle; (iv) performing steps (ii) and (iii) in combination with moving the nozzle by computer control based on said data. The invention helps providing an object like a dental restoration at maximized geometric and optical quality.Type: GrantFiled: November 9, 2016Date of Patent: July 27, 2021Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Helmar B. Mayr, Malte Korten, Carsten Franke, Robert Leland Wee Smithson
-
Publication number: 20200315761Abstract: A system having at least one dental blank and an associated shade guide. The dental blank exhibits a non-uniform color shading, and the shade guide comprises a plurality of shade specimens each exhibiting a particular color shading representing the same color shading present in a partial area within the dental blank. A method of making a dental restoration includes the use of the system. The invention facilitates making a dental restoration having a color shading resembling the color shading of a natural tooth.Type: ApplicationFiled: June 22, 2020Publication date: October 8, 2020Inventors: Malte Korten, Helmar B. Mayr
-
Patent number: 10759707Abstract: The present invention relates to a process for producing a ceramic article, the process comprising the steps of providing a printing sol, the printing sol comprising solvent, nano-sized particles, radiation curable monomer(s) and photoinitiator, the printing sol having a viscosity of less than 500 mPa*s at 23° C., processing the printing sol as construction material in an additive manufacturing process to obtain a 3-dim article being in a gel state, the 3-dim article having a Volume A, transferring the 3-dim article being in a gel state to a 3-dim article being in an aerogel state, heat treating the 3-dim article to obtain a sintered 3-dim ceramic article, the ceramic article having a Volume F, Volume A of the 3-dim article in a gel state being more than 500% of Volume F of the ceramic article in its sintered state. The invention also relates to a ceramic article obtainable according to such a process. The ceramic article can have the shape of a dental or orthodontic article.Type: GrantFiled: May 18, 2016Date of Patent: September 1, 2020Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Helmar B. Mayr, Malte Korten, Christine M. Andres, Brant U. Kolb, Holger Hauptmann, Gallus Schechner, Michael Jahns, Kathleen M. Humpa, Melissa A. Lackey
-
Patent number: 10709534Abstract: A system having at least one dental blank and an associated shade guide. The dental blank exhibits a non-uniform color shading, and the shade guide comprises a plurality of shade specimens each exhibiting a particular color shading representing the same color shading present in a partial area within the dental blank. A method of making a dental restoration includes the use of the system. The invention facilitates making a dental restoration having a color shading resembling the color shading of a natural tooth.Type: GrantFiled: November 10, 2014Date of Patent: July 14, 2020Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Malte Korten, Helmar B. Mayr
-
Publication number: 20200205935Abstract: The invention relates to a preformed dental composite crown being characterized by its shape and chemical composition, the shape being characterized as follows: having an occlusal top surface and depending buccal, mesial, distal and lingual side surfaces, the side surfaces being connected to each other and forming a crown cervix, the wall thickness of the crown at the crown cervix being lower than 0.6 mm; at least two of opposing depending side surfaces having a concave shape; the chemical composition of the material the preformed dental composite crown is made of being a hardened composition comprising the following components: nano-filler(s) in an amount from 20 to 70 wt. %, resin matrix in an amount from 20 to 75 wt. %, wt. % with respect to the weight of the chemical composition, the resin matrix comprising urethane(meth)acrylate(s) and (meth)acrylate(s) not comprising a urethane moiety.Type: ApplicationFiled: March 9, 2020Publication date: July 2, 2020Inventors: Andreas Herrmann, Gallus Schechner, Reinhold Hecht, Helmar B. Mayr, Malte Korten, Bernhard Hofmann, Gioacchino Raia, Till Meurer
-
Patent number: 10653501Abstract: A dental article includes a shell defining a volume, the shell including a circumferential base and an incisal/occlusal region distal from the circumferential base. A hardenable dental composition is located within the volume of the shell, and an isolation film is located at the circumferential base of the shell.Type: GrantFiled: September 30, 2015Date of Patent: May 19, 2020Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Bhaskar V. Velamakanni, Helmar B. Mayr, Holger Hauptmann
-
Patent number: 10610330Abstract: The invention relates to a preformed dental composite crown being characterized by its shape and chemical composition, the shape being characterized as follows: having an occlusal top surface and depending buccal, mesial, distal and lingual side surfaces, the side surfaces being connected to each other and forming a crown cervix, the wall thickness of the crown at the crown cervix being lower than 0.6 mm; at least two of opposing depending side surfaces having a concave shape; the chemical composition of the material the preformed dental composite crown is made of being a hardened composition comprising the following components: nano-filler(s) in an amount from 20 to 70 wt. %, resin matrix in an amount from 20 to 75 wt. %, wt. % with respect to the weight of the chemical composition, the resin matrix comprising urethane(meth)acrylate(s) and (meth)acrylate(s) not comprising a urethane moiety.Type: GrantFiled: February 22, 2017Date of Patent: April 7, 2020Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Andreas Herrmann, Gallus Schechner, Reinhold Hecht, Helmar B. Mayr, Malte Korten, Bernhard Hofmann, Gioacchino Raia, Till Meurer
-
Publication number: 20190176394Abstract: A device for progressively building up an object from a light hardenable material. The device has a perforated build platform for the object. The build platform forms a build surface that faces a light source. The build platform and the light source are positionable relative to each other by computer control. The device is further configured for supplying the light hardenable material through the perforation of the build platform for building up the object. The invention enables the making of colored objects by stereolithography.Type: ApplicationFiled: January 28, 2017Publication date: June 13, 2019Inventors: Malte Korten, Gioacchino Raia, Adrian S. Eckert, Bernhard Hofmann, Christian A. Richter, Bastian P. Kirchner, Anja Friedrich, Helmar B. Mayr, Carsten Franke, Gallus Schechner
-
Patent number: 10314675Abstract: A method of making a customized dental blank. The method has steps of obtaining from a dental practitioner a first color scheme and a different second color scheme as well as a first dimensional information for the first color scheme and a different second dimensional information for the second color scheme. The first and second dimensional information each relate to a size and/or a location within dimensions of the dental blank. The method further has the step of manufacturing the customized dental blank which has a first portion based on the first dimensional information according to the first color scheme and a second portion based on the second dimensional information according to the second color. Further the method has the step of providing the dental practitioner with the customized dental blank. The method helps facilitating the making of a dental restoration from a blank.Type: GrantFiled: July 23, 2015Date of Patent: June 11, 2019Assignee: 3M Innovative Properties CompanyInventors: Helmar B. Mayr, Malte Korten, Gallus Schechner
-
Patent number: 10245126Abstract: A method of making a dental restoration has the steps of capturing an image of a tooth, posterizing the image, determining a tooth color structure, providing information about a multicolored block having a block color structure, matching the tooth color structure and the block color structure, based on the matching, determining a position within the block in which the tooth color structure and the block color structure match, and machining the dental restoration from the block at the determined position. The invention helps facilitating the making of dental restorations at maximized aesthetics.Type: GrantFiled: October 16, 2015Date of Patent: April 2, 2019Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Malte Korten, Helmar B. Mayr
-
Publication number: 20190021815Abstract: The invention relates to a preformed dental composite crown being characterized by its shape and chemical composition, the shape being characterized as follows: having an occlusal top surface and depending buccal, mesial, distal and lingual side surfaces, the side surfaces being connected to each other and forming a crown cervix, the wall thickness of the crown at the crown cervix being lower than 0.6 mm; at least two of opposing depending side surfaces having a concave shape; the chemical composition of the material the preformed dental composite crown is made of being a hardened composition comprising the following components: nano-filler(s) in an amount from 20 to 70 wt. %, resin matrix in an amount from 20 to 75 wt. %, wt. % with respect to the weight of the chemical composition, the resin matrix comprising urethane(meth)acrylate(s) and (meth)acrylate(s) not comprising a urethane moiety.Type: ApplicationFiled: February 22, 2017Publication date: January 24, 2019Inventors: Andreas Herrmann, Gallus Schechner, Reinhold Hecht, Helmar B. Mayr, Malte Korten, Bernhard Hofmann, Gioacchino Raia, Till Meurer
-
Publication number: 20180325635Abstract: A method of building up a dental object includes steps of (i) determining the three-dimensional shape of the object; (ii) mixing at least a first and a second component to form a hardenable composition; (iii) depositing the hardenable composition through a nozzle; (iv) performing steps (ii) and (iii) in combination with moving the nozzle by computer control based on said data. The invention helps providing an object like a dental restoration at maximized geometric and optical quality.Type: ApplicationFiled: November 9, 2016Publication date: November 15, 2018Inventors: Helmar B. Mayr, Malte Korten, Carsten Franke, Robert Leland Wee Smithson
-
Publication number: 20180206952Abstract: A method of making a dental article, has steps of (i) providing a layer of sinter powder, (ii) providing a solidifiable binder to form a circumferential fixation zone (114) which encloses a portion of the powder layer. The method further has the step of repeating steps (i) and (ii) with each fixation zone (114) of one layer being in contact with a fixation zone (114) of an adjacent layer such that a plurality of the fixation zones (114) together form a coherent hollow sleeve (116) extending across the layers. The corresponding plurality of powder portions in combination form a contiguous batch (118) of powder captured in the sleeve. The method facilitates the manufacturing of sintered dental articles.Type: ApplicationFiled: July 11, 2016Publication date: July 26, 2018Inventors: Malte Korten, Helmar B. Mayr, Gioacchino Raia, Daniel D. Oberpertinger, Martin Goetzinger, Peter Bissinger
-
Patent number: 10028810Abstract: A method of capturing data from a patient's dentition with the steps of positioning a first optical sensor relative to patient's dentition, capturing the shape of a tooth in the patient's dentition, independent from capturing the shape, measuring a color at a location on the tooth, and providing a correlation between the location of the color and a coordinate in the captured shape. The invention helps providing a dental restoration at a relatively high optical, mechanical, and geometric quality.Type: GrantFiled: April 24, 2014Date of Patent: July 24, 2018Assignee: 3M Innovative Properties CompanyInventors: Malte Korten, Helmar B. Mayr, Gallus Schechner, Gioacchino Raia