Patents by Inventor Gottfried Rohner
Gottfried Rohner 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: 9931188Abstract: A dental color key having at least two different color patterns or samples with different tooth colors. The entire surface area of the color key (10) may be smaller than the buccal and/or labial surface area, that is to say the vestibular surface area of two teeth, and the color patterns or samples (12) are attached adjacent to one another and particularly mounted to one single tooth.Type: GrantFiled: October 17, 2014Date of Patent: April 3, 2018Assignee: Ivoclar Vivadent AGInventors: Gottfried Rohner, Diethard Bertsch, Michael Brotzge
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Patent number: 9883931Abstract: The present invention relates to a device and a method for the application of composites in tooth cavities. The device consists of a spray gun with integrated lighting for light-polymerizable composites, a measuring unit and a control unit. The composites are applied under controlled, precisely dosed exposure to polymerization light. According to the invention, the composite initially runs onto the walls of the cavity or onto previously introduced filling material and then, as a result of the light exposure, is transformed into the gel state. Thus, a large part of the polymerization shrinkage of the composite occurs while the composite is still plastically deformable so that any formation of gaps is compensated by the composite continuing to flow. It is only at this point in time that a sufficiently high dosage of light is applied for complete curing to occur.Type: GrantFiled: September 18, 2013Date of Patent: February 6, 2018Assignee: Ivoclar Vivadent AGInventors: Michael Gente, Simone Dudda, Arnd Peschke, Gottfried Rohner, Ulrich Salz, Andreas Facher
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Patent number: 9763760Abstract: The invention relates to an apparatus for irradiating an object, in particular for light-curing a dental object by means of a first radiation, the apparatus comprising at least one radiation source for emitting the first radiation, the apparatus further comprising at least one radiation sensor for measuring at least a second radiation, and the apparatus further comprising a housing. The second radiation is the first radiation reelected by the object.Type: GrantFiled: September 21, 2015Date of Patent: September 19, 2017Assignee: Ivoclar Vivadent AGInventors: Bruno Senn, Wolfgang Plank, Gottfried Rohner
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Patent number: 9662188Abstract: The invention relates to a method for producing a dental restoration part, in which method, geometrical data, in particular data with respect to spatial dimensions, position and/or volume of the restoration part, are determined and stored in order to form a virtual restoration part. In a further process step, the virtual restoration part is provided for the tooth (10) to be replaced by using data of the tooth (10) to be replaced, a neighboring tooth (60) and/or a tooth stump, and said data is stored as color data and is used for the computer-assisted production of the virtual restoration part.Type: GrantFiled: February 13, 2012Date of Patent: May 30, 2017Assignee: Ivoclar Vivadent AGInventors: Jürgen Laubersheimer, Wolfram Murr, Gottfried Rohner, Nadja Schlechtriemen
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Patent number: 9592635Abstract: The invention relates to a method for the construction of a shaped body from photopolymerizable material by using lithography-based generative production (rapid prototyping), in which a layer of liquid photopolymerizable material is defined on a production platform (1, 2, 3, 4), the layer is polymerized in an exposure region having a predetermined contour by exposure, a further layer of photopolymerizable material is defined on the polymerized layer, the layer defined last is polymerized by exposure in an exposure region having a predetermined contour for the layer defined last, and the latter two steps are repeated until a shaped body having a predetermined shape has been formed by the sequence of cured layers with contours predetermined layer by layer, wherein ink is applied onto at least one layer inside the predetermined contour, wherein the production platform is suspended moveably and wherein the production platform is brought, after the polymerization of a layer in a processing station for polymerizingType: GrantFiled: June 4, 2013Date of Patent: March 14, 2017Assignees: Ivoclar Vivadent AG, Technische Universität WienInventors: Jorg Ebert, Wolfgang Wachter, Gottfried Rohner, Jurgen Stampfl
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Publication number: 20170065382Abstract: The invention relates to a dental furnace comprising a firing hood equipped with a heating device that is movably supported for the opening and closing of the dental furnace relative to a base intended for receiving a dental restoration part, and further comprising a heat detection device that is directed towards an area above the base, in particular towards one or more dental restoration parts, and further comprising a control or regulating device for the dental furnace that is coupled to the heat detection device, wherein the heat detection device is configured as a thermal imaging camera (30) which is directed towards the area above the base while the firing hood (12) is partially or completely opened, and which feeds an at least two-dimensional image in the form of a matrix of the one or more inserted dental restoration parts (60) to the control or regulating device and/or to a muffle (26) that is intended for the generation of the dental restoration parts (60).Type: ApplicationFiled: October 28, 2016Publication date: March 9, 2017Inventors: Gottfried Rohner, Rudolf Jussel
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Publication number: 20170030649Abstract: In a dental furnace having a firing chamber (12) with a base and at least one receiving portion for dental restoration parts (40). The receiving portion has a plurality of support elements (26) that are arranged adjacent to one another and in particular have the same thickness, wherein said support elements (26) support the dental restoration part (40) during the firing process.Type: ApplicationFiled: October 14, 2016Publication date: February 2, 2017Inventors: Gottfried ROHNER, Rudolf JUSSEL
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Patent number: 9557114Abstract: The invention relates to a dental furnace wherein a firing chamber is heated up in a first heating-up period at a first heating-up rate of more than 501 K/min, in particular more than 1001 K/min, which heats the furnace to at least 10001 C, in particular to 1100-12501 C. The first heating-up period is followed by an intermediate heating period, which is at least five minutes long, in particular at least ten minutes long, the gradient or heating-up rate of which is adapted to the material to be sintered in the dental furnace (10), and wherein this is followed by an end heating-up period (44) during which heating up is effected at a heating-up rate of more than 301 K/min, in particular approximately 501 K/min, and wherein during this the furnace temperature is held for at least five minutes, in particular for at least 25 minutes, above the temperature toward the end of the first heating-up period, and wherein forced cooling of the furnace (10) is performed after this.Type: GrantFiled: April 13, 2015Date of Patent: January 31, 2017Assignee: Ivoclar Vivadent AGInventors: Gottfried Rohner, Walter Pokorny, Robert Grunenfelder, Frank Rothbrust
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Patent number: 9492253Abstract: In a dental furnace that comprises a firing chamber (12) having a base and at least one receiving portion for dental restoration parts (40) it is provided that the receiving portion comprises a plurality of support elements (26) that are arranged adjacent to one another and in particular have the same thickness, wherein said support elements (26) support the dental restoration part (40) during the firing process.Type: GrantFiled: April 25, 2011Date of Patent: November 15, 2016Assignee: Ivoclar Vivadent AGInventors: Gottfried Rohner, Rudolf Jussel
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Patent number: 9480544Abstract: The invention relates to a dental furnace comprising a firing hood equipped with a heating device that is movably supported for the opening and closing of the dental furnace relative to a base intended for receiving a dental restoration part, and further comprising a heat detection device that is directed towards an area above the base, in particular towards one or more dental restoration parts, and further comprising a control or regulating device for the dental furnace that is coupled to the heat detection device, wherein the heat detection device is configured as a thermal imaging camera (30) which is directed towards the area above the base while the firing hood (12) is partially or completely opened, and which feeds an at least two-dimensional image in the form of a matrix of the one or more inserted dental restoration parts (60) to the control or regulating device and/or to a muffle (26) that is intended for the generation of the dental restoration parts (60).Type: GrantFiled: December 20, 2013Date of Patent: November 1, 2016Assignee: Ivoclar Vivadent AGInventors: Gottfried Rohner, Rudolf Jussel
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Publication number: 20160195334Abstract: The invention relates to a dental furnace wherein a firing chamber is heated up in a first heating-up period at a first heating-up rate of more than 50° K/min, in particular more than 100° K/min, which heats the furnace to at least 1000° C., in particular to 1100-1250° C. The first heating-up period is followed by an intermediate heating period, which is at least five minutes long, in particular at least ten minutes long, the gradient or heating-up rate of which is adapted to the material to be sintered in the dental furnace (10), and wherein this is followed by an end heating-up period (44) during which heating up is effected at a heating-up rate of more than 30° K/min, in particular approximately 50° K/min, and wherein during this the furnace temperature is held for at least five minutes, in particular for at least 25 minutes, above the temperature toward the end of the first heating-up period, and wherein forced cooling of the furnace (10) is performed after this.Type: ApplicationFiled: January 13, 2016Publication date: July 7, 2016Inventors: Gottfried Rohner, Walter Pokorny, Robert Grunenfelder, Frank Rothbrust
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Publication number: 20160008115Abstract: The invention relates to an apparatus for irradiating an object, in particular for light-curing a dental object by means of a first radiation, the apparatus comprising at least one radiation source for emitting the first radiation, the apparatus further comprising at least one radiation sensor for measuring at least a second radiation, and the apparatus further comprising a housing. The second radiation is the first radiation reelected by the object.Type: ApplicationFiled: September 21, 2015Publication date: January 14, 2016Inventors: Bruno Senn, Wolfgang Plank, Gottfried Rohner
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Patent number: 9174375Abstract: The invention relates to a device for production of dental molded parts from a polymerizable plastic, with a flask (16) and with a heating device (40) for heating the polymerizable plastic in the flask (16). The heating device (40) is movable relative to the flask (16).Type: GrantFiled: December 9, 2013Date of Patent: November 3, 2015Assignee: Ivoclar Vivadent AGInventors: Wolfgang Wachter, Walter Pokorny, Gottfried Rohner, Robert Grunenfelder
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Patent number: 9161828Abstract: The invention relates to an apparatus for irradiating an object, in particular for light-curing a dental object by means of a first radiation, the apparatus comprising at least one radiation source for emitting the first radiation, the apparatus further comprising at least one radiation sensor for measuring at least a second radiation, and the apparatus further comprising a housing. The second radiation is the first radiation reelected by the object.Type: GrantFiled: May 19, 2009Date of Patent: October 20, 2015Assignee: Ivoclar Vivadent AGInventors: Bruno Senn, Wolfgang Plank, Gottfried Rohner
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Publication number: 20150230900Abstract: The present invention relates to a device and a method for the application of composites in tooth cavities. The device consists of a spray gun with integrated lighting for light-polymerizable composites, a measuring unit and a control unit. The composites are applied under controlled, precisely dosed exposure to polymerization light. According to the invention, the composite initially runs onto the walls of the cavity or onto previously introduced filling material and then, as a result of the light exposure, is transformed into the gel state. Thus, a large part of the polymerization shrinkage of the composite occurs while the composite is still plastically deformable so that any formation of gaps is compensated by the composite continuing to flow. It is only at this point in time that a sufficiently high dosage of light is applied for complete curing to occur.Type: ApplicationFiled: September 18, 2013Publication date: August 20, 2015Inventors: Michael Gente, Simone Dudda, Arndt Peschke, Gottfried Rohner, Ulrich Salz, Andreas Facher
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Publication number: 20150219397Abstract: The invention relates to a dental furnace wherein a firing chamber is heated up in a first heating-up period at a first heating-up rate of more than 501 K/min, in particular more than 1001 K/min, which heats the furnace to at least 10001 C, in particular to 1100-12501 C. The first heating-up period is followed by an intermediate heating period, which is at least five minutes long, in particular at least ten minutes long, the gradient or heating-up rate of which is adapted to the material to be sintered in the dental furnace (10), and wherein this is followed by an end heating-up period (44) during which heating up is effected at a heating-up rate of more than 301 K/min, in particular approximately 501 K/min, and wherein during this the furnace temperature is held for at least five minutes, in particular for at least 25 minutes, above the temperature toward the end of the first heating-up period, and wherein forced cooling of the furnace (10) is performed after this.Type: ApplicationFiled: April 13, 2015Publication date: August 6, 2015Inventors: Gottfried Rohner, Walter Pokorny, Robert Grunenfelder, Frank Rothbrust
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Patent number: 9067359Abstract: A method and a device for processing light-polymerizable material for the assembly of a mold, utilizing a lithography-based generative manufacturing technique wherein a layer of a light-polymerizable material, the material being located in at least one trough (4) having a particularly light-transmissive, horizontal bottom (6), is polymerized by illumination on at least one horizontal platform (12), the platform having a prespecified geometry and projecting into a trough (4), in an illumination field, wherein the platform (12) is displaced vertically to form a subsequent layer, light-polymerizable material is then added to the most recently formed layer, and repetition of the foregoing steps leads to the layered construction of the mold in the desired form, which arises from the succession of layer geometries.Type: GrantFiled: October 16, 2013Date of Patent: June 30, 2015Assignees: Ivoclar Vivadent AG, Technische Universitat WienInventors: Gottfried Rohner, Wolfgang Wachter, Christoph Appert, Johannes Patzer, Jürgen Stampfl
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Patent number: D732094Type: GrantFiled: January 18, 2013Date of Patent: June 16, 2015Assignee: Ivoclar Vivadent AGInventors: Rudolf Jussel, Walter Pokorny, Gottfried Rohner
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Patent number: D733890Type: GrantFiled: December 13, 2013Date of Patent: July 7, 2015Assignee: Ivoclar Vivadent AGInventors: Ronny Watzke, Robert Grünenfelder, Michael Brotzge, Gottfried Rohner
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Patent number: D758591Type: GrantFiled: June 1, 2015Date of Patent: June 7, 2016Assignee: Ivoclar Vivadent AGInventors: Ronny Watzke, Robert Grünenfelder, Michael Brotzge, Gottfried Rohner