Patents by Inventor Peter Burtscher
Peter Burtscher 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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Publication number: 20170282262Abstract: A reversible cutting insert for milling has first and second cutting edges formed at the transitions from the top and bottom surfaces to a lateral face. The cutting insert has a 4-fold rotational symmetry. A reference plane extends perpendicular to the axis of symmetry. The cutting edges have four cutting edge portions. One cutting edge portion is a main edge and a wiper edge that are connected by a rounded cutting corner. The first and second cutting edges are at the greatest distance from the reference plane in the region of the cutting corners. Main and wiper clearance faces directly adjoin an assigned main edge and wiper edge, respectively, in the circumferential lateral face. Exterior angles between the main clearance faces and the reference plane are greater than exterior angles between the wiper clearance faces and the reference plane.Type: ApplicationFiled: August 11, 2015Publication date: October 5, 2017Inventor: PETER BURTSCHER
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Publication number: 20170239736Abstract: A tool for machining has a main body, a seat formed on the main body, a fastening screw, and a cutting insert. The seat has a base surface for supporting an underside of the cutting insert and a lateral bearing surface. A bore for receiving the fastening screw is formed in the base surface, the bore has a threaded bore portion and, closer toward the base surface, a thread-free bore portion. The cutting insert is fastened to the seat such that the head portion of the fastening screw is supported on the through-hole in the cutting insert. The threaded portion of the fastening screw engages with the threaded bore and the fastening screw is elastically deflected such that a thread-free shank portion bears against the thread-free bore portion on a side remote from the lateral bearing surface and is spaced apart from the thread-free bore portion.Type: ApplicationFiled: November 23, 2015Publication date: August 24, 2017Inventors: PETER BURTSCHER, JOSEF PRAST
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Publication number: 20170172855Abstract: Radically polymerizable dental material, which contains at least one compound of Formula I: The material preferably additionally contains a radically polymerizable monomer, an initiator for the radical polymerization and filler. It is characterized by a low polymerization contraction stress.Type: ApplicationFiled: July 9, 2015Publication date: June 22, 2017Inventors: Norbert Moszner, Urs-Karl Fischer, Iris Lamparth, Peter Burtscher, Robert Liska, Christian Gorsche, Konstanze Seidler, Paul Gauss
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Publication number: 20170156993Abstract: Radically polymerizable dental material, which contains at least one compound of Formula I: and at least one thermolabile radically polymerizable compound and/or at least one photolabile radically polymerizable compound. The materials are characterized by debonding-on-demand properties.Type: ApplicationFiled: July 9, 2015Publication date: June 8, 2017Inventors: Norbert Moszner, Kai Rist, Iris Lamparth, Peter Burtscher, Christian Gorsche, Robert Liska
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Patent number: 9669478Abstract: A milling tool has a tool shank and a cutting head fastened to the forward end of the tool shank by way of a clamping connection. The clamping connection has a protrusion with clamping faces, and a recess with centering faces that interact with the clamping faces. Each of the centering faces has a first region where the centering faces are spaced from a longitudinal axis of the tool shank by a first distance and a second region at a smaller distance. The first region merges into the second region. The clamping faces of the protrusion are introducible into the recess between the first regions of the centering faces and are movable, by rotation of the cutting head about the longitudinal axis, into a clamping position in which the clamping faces interact in a force-fit with the second regions of the centering faces.Type: GrantFiled: February 18, 2014Date of Patent: June 6, 2017Assignee: Ceratizit Austria GmbHInventors: Peter Burtscher, Josef Prast
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Publication number: 20170143592Abstract: Monomer mixture for the preparation of dental materials, which contains at least one low-volatile monomethacrylate, at least one highly viscous polyfunctional methacrylate and at least one low-viscosity polyfunctional methacrylate.Type: ApplicationFiled: February 26, 2015Publication date: May 25, 2017Inventors: Norbert MOSZNER, Peter BURTSCHER, Alexandros GIANASMIDIS
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Publication number: 20170128328Abstract: Radically polymerizable dental material which contains as initiator for the radical polymerization a combination of a thiourea derivative and a bisacyldialkylgermanium compound.Type: ApplicationFiled: March 19, 2015Publication date: May 11, 2017Applicant: IVOCLAR VIVADENT AGInventors: Norbert MOSZNER, Peter BURTSCHER, Alexandros GIANASMIDIS
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Publication number: 20170066065Abstract: An indexable cutting insert for face milling with high feed rates has: an upper side, a lower side with a smaller outer circumference than the upper side, and side surfaces connecting the upper and lower sides. Rounded cutting corners are formed at the transition between the side surfaces and the upper side. The cutting corners are connected via convexly arched cutting edges, each running convexly curved from one cutting corner to an adjacent cutting corner. Adjacent the cutting edges, the side surfaces have main flanks extending along the respective cutting edge in a continuously convexly curved manner from one cutting corner to an adjacent cutting corner. The main flanks extend in the direction of the lower side only over part of the height of the side surfaces and merge in a stepped manner into secondary surfaces which are set back inward.Type: ApplicationFiled: February 19, 2015Publication date: March 9, 2017Inventor: PETER BURTSCHER
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Publication number: 20170007505Abstract: Dental material, which contains an ene compound with two or more C—C multiple bonds and a thiol according to general Formula (1) or an oligomer based on such a thiol, wherein n, p and m are chosen such that the thiol has a total of at least 3 SH groups.Type: ApplicationFiled: February 24, 2015Publication date: January 12, 2017Inventors: Norbert Moszner, Peter Burtscher, Urs-Karl Fischer, Helmut Ritter, Monir Tabatabai, Andreas Utterodt
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Patent number: 9532930Abstract: The invention relates to a composition with at least one polymerizable binder, wherein the composition contains a photoinitiator mixture which contains (a) at least one diacylgermanium compound of general formula (I) in which R1, R2 independently of each other are a linear C1-4-alkyl, or C2-4-alkenyl radical, which can be substituted by one or more polymerizable groups; R3, R4 independently of each other are in each case H, halogen, a branched or linear C1-4-alkyl or —O—C1-4-alkyl radical; R5, R6, R7 independently of each other are in each case H, halogen, a linear C1-20-alkyl, -alkenyl, -alkoxy or -alkenoxy radical, which can be interrupted by one or more —O—, —S— or —NR8— radicals and substituted by one or more polymerizable groups; and R8 independently is in each case H, a C1-20-alkyl, -alkenyl, -alkoxy or -alkenoxy radical, (b) at least one ?-diketone and (c) at least one accelerator, as well as the use of the composition for example for producing a filling composite.Type: GrantFiled: April 11, 2013Date of Patent: January 3, 2017Assignee: Ivoclar Vivadent AGInventors: Peter Burtscher, Norbert Moszner, Volker Rheinberger
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Patent number: 9522100Abstract: The invention relates to a dental restorative material on the basis of at least one compound of one of the Formulae The invention also relates to the use of the dental restorative materials according to the invention for preparing dental composites, preferably composite blanks, which are suitable in particular for mechanical processing by means of computer-aided processing techniques such as milling and grinding processes, and which are suitable above all for preparing dental restoration materials such as inlays, onlays, crowns, bridges or veneering materials.Type: GrantFiled: December 15, 2014Date of Patent: December 20, 2016Assignee: Ivoclar Vivadent AGInventors: Norbert Moszner, Peter Burtscher, Ulrich S. Schubert, Martin Hager, Bobby Happ, Benedict Sandmann
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Patent number: 9333150Abstract: The invention relates to a dental restorative material on the basis of at least one compound of Formula I A-[X-Q-(Y-CG)n]m?? Formula I, wherein CG represents in each case independently an azide group N3 or an alkyne group selected from the group consisting of —CR1R2—C?CH, with the proviso that the dental restorative material comprises at least one compound of Formula I comprising an azide group and at least one compound of Formula I comprising an alkyne group. The invention also relates to the use of the dental restorative materials according to the invention for preparing dental composites, preferably composite blanks, which are suitable in particular for mechanical processing by means of computer-aided processing techniques such as milling and grinding processes, and which are suitable above all for preparing dental restoration materials such as inlays, onlays, crowns, bridges or veneering materials.Type: GrantFiled: December 9, 2013Date of Patent: May 10, 2016Assignee: Ivoclar Vivadent AGInventors: Norbert Moszner, Peter Burtscher, Urs Karl Fischer, Thomas Hirt, Ulrich S. Schubert, Martin Hager, Bobby Happ, Benedict Sandmann
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Patent number: 9289359Abstract: Curable multicomponent dental material, including a first paste, which contains (i) one or more acid group-free radically polymerizable monomers and (ii) basic filler, and a second paste, which contains (iii) one or more acid group-containing radically polymerizable monomers and (iv) non-basic filler, wherein the multicomponent dental material contains at least one initiator (v) for radical polymerization in at least paste (A) or (B).Type: GrantFiled: July 9, 2009Date of Patent: March 22, 2016Assignee: Ivoclar Vivadent AGInventors: Peter Burtscher, Marion Eder, Axel Kammann
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Publication number: 20150375309Abstract: A milling tool has a tool shank and a cutting head fastened to the forward end of the tool shank by way of a clamping connection. The clamping connection has a protrusion with clamping faces, and a recess with centering faces that interact with the clamping faces. Each of the centering faces has a first region where the centering faces are spaced from a longitudinal axis of the tool shank by a first distance and a second region at a smaller distance. The first region merges into the second region. The clamping faces of the protrusion are introducible into the recess between the first regions of the centering faces and are movable, by rotation of the cutting head about the longitudinal axis, into a clamping position in which the clamping faces interact in a force-fit with the second regions of the centering faces.Type: ApplicationFiled: February 18, 2014Publication date: December 31, 2015Applicant: CERATIZIT AUSTRIA GMBHInventors: PETER BURTSCHER, JOSEF PRAST
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Publication number: 20150164750Abstract: The invention relates to a dental restorative material on the basis of at least one compound of one of the Formulae The invention also relates to the use of the dental restorative materials according to the invention for preparing dental composites, preferably composite blanks, which are suitable in particular for mechanical processing by means of computer-aided processing techniques such as milling and grinding processes, and which are suitable above all for preparing dental restoration materials such as inlays, onlays, crowns, bridges or veneering materials.Type: ApplicationFiled: December 15, 2014Publication date: June 18, 2015Inventors: Norbert Moszner, Peter Burtscher, Ulrich S. Schubert, Martin Hager, Bobby Happ, Benedict Sandmann
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Publication number: 20150080490Abstract: The invention relates to a composition with at least one polymerizable binder, wherein the composition contains a photoinitiator mixture which contains (a) at least one diacylgermanium compound of general formula (I) in which R1, R2 independently of each other are a linear C1-4-alkyl, or C2-4-alkenyl radical, which can be substituted by one or more polymerizable groups; R3, R4 independently of each other are in each case H, halogen, a branched or linear C1-4-alkyl or —O—C1-4-alkyl radical; R5, R6, R7 independently of each other are in each case H, halogen, a linear C1-20-alkyl, -alkenyl, -alkoxy or -alkenoxy radical, which can be interrupted by one or more —O—, —S— or —NR8— radicals and substituted by one or more polymerizable groups; and R8 independently is in each case H, a C1-20-alkyl, -alkenyl, -alkoxy or -alkenoxy radical, (b) at least one ?-diketone and (c) at least one accelerator, as well as the use of the composition for example for producing a filling composite.Type: ApplicationFiled: April 11, 2013Publication date: March 19, 2015Inventors: Peter Burtscher, Norbert Moszner, Volker Rheinberger
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Patent number: 8974156Abstract: A cutting insert with a substantially triangular or square basic form is particularly suited for face milling at high feed rates. It has convex cutting edges, which are each made up of a circular arc and at least one straight portion. Each cutting edge has, adjoining a cutting corner, a straight face cutting edge that merges with a main cutting edge, having 1 to 3 straight portions, a circular portion with a radius of at most 80% of the radius Ri of the inscribed circle. The cutting edges have an all-round cutting edge chamfer with a chamfer angle ?. This chamfer angle ? has along the cutting corners a value in the range from ?10° to ?20° and changes continuously along sub-portions of the face cutting edge and main cutting edge and along the circular portion to a constant value in the range from 0° to ?10°.Type: GrantFiled: February 24, 2011Date of Patent: March 10, 2015Assignee: Ceratizit Austria GmbHInventor: Peter Burtscher
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Patent number: 8950983Abstract: A cutting tool has a main tool body and at least one insert seat disposed thereon. The seat has a bottom surface for mounting a cutting insert, and further has a dowel pin, which penetrates a through-hole of the mounted cutting insert and the bottom surface and can be fixed to the main tool body. A center longitudinal axis of the fixed dowel pin is arranged at an acute angle with respect to the bottom surface. The dowel pin contains a spherical segment for mounting on a bearing surface of the through-hole. The surface of the spherical segment is interrupted by a segment groove.Type: GrantFiled: June 8, 2010Date of Patent: February 10, 2015Assignee: Ceratizit Austria Gesellschaft mbHInventors: Peter Burtscher, Anton Diepold, Uwe Schleinkofer
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Publication number: 20140171536Abstract: The invention relates to a dental restorative material on the basis of at least one compound of Formula I A-[X-Q-(Y-CG)n]m??Formula I, wherein CG represents in each case independently an azide group N3 or an alkyne group selected from the group consisting of —CR1R2—C?CH, with the proviso that the dental restorative material comprises at least one compound of Formula I comprising an azide group and at least one compound of Formula I comprising an alkyne group. The invention also relates to the use of the dental restorative materials according to the invention for preparing dental composites, preferably composite blanks, which are suitable in particular for mechanical processing by means of computer-aided processing techniques such as milling and grinding processes, and which are suitable above all for preparing dental restoration materials such as inlays, onlays, crowns, bridges or veneering materials.Type: ApplicationFiled: December 9, 2013Publication date: June 19, 2014Inventors: Norbert Moszner, Peter Burtscher, Urs Urs Fischer, Thomas Hirt, Ulrich S. Schubert, Martin Hager, Bobby Happ, Benedict Sandmann
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Publication number: 20130330135Abstract: A cutting insert for machining has a substantially cylindrical main body with an axis, a lateral flank and opposing rake faces. Cutting edges are formed at the intersection of the flank and rake faces. The cutting edges have, in the direction of the axis, in each case at least two convexly curved sections which are connected together by concavely curved or substantially straight sections.Type: ApplicationFiled: February 23, 2012Publication date: December 12, 2013Applicant: CETATIZIT AUSTRIA GESELLSCHAFT MBHInventors: Peter Burtscher, Juergen Duwe, Markus Krabicher, Uwe Schleinkofer