Patents by Inventor Friedrich Sernetz
Friedrich Sernetz 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: 7481651Abstract: To create an orthodontic device with a base having a base surface for fixing the device to a tooth, and a slot for receiving an archwire, which is defined by a bottom surface and two side surfaces arranged on either side of the bottom surface and aligned in substantially parallel spaced relation to each other, and which extends in a substantially straight line through the base in the longitudinal direction of the base on a side thereof facing away from the base surface, and with a cover element for at least partially covering the open side of the slot facing the bottom surface, which is convertible and is easier to handle during the conversion, and which offers the wearer an increased degree of security, it is proposed that the side surfaces of the slot have a positively locking guide, which is aligned substantially parallel in relation to the longitudinal direction of the slot, and in which the cover element is slidably and detachably held on the base.Type: GrantFiled: December 27, 2005Date of Patent: January 27, 2009Assignee: Dentaurum J.P. Winkelstroeter KGInventors: Friedrich Sernetz, Walter Ehrenberger, Rainer Weber, Klaus Wigger
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Publication number: 20070092855Abstract: A molding can be worked by removing material to produce dental parts of improved mechanical properties is provided, the molding consisting of a dental alloy powder dense-sintered by hot-isostatic pressing.Type: ApplicationFiled: September 15, 2006Publication date: April 26, 2007Applicant: DENTAURUM J.P. WINKELSTROETER KGInventors: Friedrich SERNETZ, Jurgen LINDIGKEIT
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Publication number: 20060210942Abstract: To provide an orthodontic fastening element, in particular a bracket, comprising a molding made of a non-metallic material, the fastening element having increased acceptance, particularly among younger patients, by virtue of the fact that it has at least in a partial region a lasting colored tint that is distinctly different from the color of the teeth, it is proposed according to the invention that the fastening element comprises an ion-doped ceramic material.Type: ApplicationFiled: March 8, 2006Publication date: September 21, 2006Applicant: DENTAURUM J.P. WINKELSTROETER KGInventors: Mark Pace, Michael Reise, Friedrich Sernetz, Klaus Wigger
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Publication number: 20060172248Abstract: To create an orthodontic device with a base having a base surface for fixing the device to a tooth, and a slot for receiving an archwire, which is defined by a bottom surface and two side surfaces arranged on either side of the bottom surface and aligned in substantially parallel spaced relation to each other, and which extends in a substantially straight line through the base in the longitudinal direction of the base on a side thereof facing away from the base surface, and with a cover element for at least partially covering the open side of the slot facing the bottom surface, which is convertible and is easier to handle during the conversion, and which offers the wearer an increased degree of security, it is proposed that the side surfaces of the slot have a positively locking guide, which is aligned substantially parallel in relation to the longitudinal direction of the slot, and in which the cover element is slidably and detachably held on the base.Type: ApplicationFiled: December 27, 2005Publication date: August 3, 2006Applicant: DENTAURUM J.P. Winkelstroeter KGInventors: Friedrich Sernetz, Walter Ehrenberger, Rainer Weber, Klaus Wigger
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Publication number: 20050181332Abstract: The invention relates to a lingual retainer which can be connected at both ends to the teeth of a patient by means of an adhesive connection in order to maintain the position of the corrected teeth of the patient in said corrected position. The retainer avoids known problems encountered with conventional material and also exhibits good flexibility as well as good biocompatibility and a high patient comfort. It can also be used over a long period of time (in extreme cases, for a lifetime) without any detrimental effects on health. The retainer is made of one material which is either titanium or a titanium alloy.Type: ApplicationFiled: March 18, 2005Publication date: August 18, 2005Applicant: Dentaurum J. P. Winkelstroeter KGInventor: Friedrich Sernetz
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Patent number: 5429499Abstract: In order to improve the mechanical strength of an orthodontic aid produced on a plastics basis, without having to tolerate any appreciable reduction in the transparency of the bracket, it is suggested that a reinforcement increasing the mechanical strength be arranged at least in those areas acted upon by tooth correction forces, this reinforcement being produced with the use of a ceramic material.Type: GrantFiled: August 10, 1993Date of Patent: July 4, 1995Assignee: Dentaurum J.P. Winkelstroeter KGInventor: Friedrich Sernetz
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Patent number: 5383784Abstract: Auxiliary orthodontic appliance, namely expansion screw for the maxilla or mandible, bracket or buccal tube, which in order to improve its properties consists of titanium or an alloy on the basis of titanium and the surfaces of which are formed by a titanium oxide skin.Type: GrantFiled: September 1, 1993Date of Patent: January 24, 1995Assignee: Dentaurum J. P. Winkelstroeter KGInventor: Friedrich Sernetz
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Patent number: 5326259Abstract: In order to so improve a metallic orthodontic aid having an optically visible marking area that the marking is easy to apply and is also visible up to a definable number of recycling process cycles, it is proposed that the marking area be a surface of an additionally produced layer with a remelt structure.Type: GrantFiled: April 16, 1993Date of Patent: July 5, 1994Assignee: Dentaurum J.P. Winkelstroeter KGInventors: Friedrich-Wilhelm Rohlcke, Friedrich Sernetz
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Patent number: 5242298Abstract: Shaped bodies of transparent, polycrystalline alumina are produced in a green body is formed in a first step using pure, fine-grained alumina wherein, in the given circumstances, the green body is freed from the auxiliary agents used int he production by burning-out in a second step, wherein pretreat is carried out as a subsequent third step, and wherein the compaction to transparent, polycrystalline alumina takes place in a fourth step, in order to render the method more economical, it is suggested that the pretreatment be carried out in such a way as to produce a closed surface on the shaped body and that pressure from all sides at elevated temperature be used to compact the shaped body in the fourth step.Type: GrantFiled: November 14, 1991Date of Patent: September 7, 1993Assignee: Dentaurum J. P. Winkelstroeter KGInventor: Friedrich Sernetz
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Patent number: 5238402Abstract: In order to so improve a metallic orthodontic aid having an optically visible marking area that the marking is easy to apply and is also visible up to a definable number of recycling process cycles, it is proposed that the marking area be a surface of an additionally produced layer with a remelt structure.Type: GrantFiled: April 13, 1989Date of Patent: August 24, 1993Assignee: Dentaurum J. P. Winkelstroeter KGInventors: Friedrich-Wilhelm Rohlcke, Friedrich Sernetz
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Patent number: 4968459Abstract: A method for the production of shaped bodies of transparent polycrystalline alumina having a yellowish color tone. A green body is formed using pure, fine-grained alumina. The auxiliary agents are burned out of the green body. The green body is treated in such a way as to produce a closed surface on the shaped body. The body is compacted to a transparent, polycrystalline alumina body. Finally, the body is annealed in air to impart a yellowish color tone to the body.Type: GrantFiled: April 7, 1989Date of Patent: November 6, 1990Assignee: Dentaurum J.P. Winkelstroeter KGInventor: Friedrich Sernetz
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Patent number: 4699637Abstract: A hydrogen permeation membrane in the form of a metal coating such as palium and alloys of palladium less than 100 microns in thickness supported by a fabric with a mesh width not exceeding 50 microns. A diffusion blocking material such as nickel and alloys of nickel may be provided. The metal coating may be in the range of about 10 to 30 microns, and the mesh width may be in the range of about 2 to 20 microns.Type: GrantFiled: September 10, 1984Date of Patent: October 13, 1987Assignee: Kernforschungsanlage Julich Gesellschaft mit beschrankter HaftungInventors: Nicolas Iniotakis, Claus-Benedict von der Decken, Heinrich Fedders, Werner Frohling, Friedrich Sernetz