Patents by Inventor Jurgen Hausselt
Jurgen Hausselt 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: 7910510Abstract: The present invention relates to dielectric ceramics, thin and/or thick layers produced therefrom and a method for the production thereof and the use of the dielectrics and of the thin and/or thick layers.Type: GrantFiled: April 16, 2007Date of Patent: March 22, 2011Assignee: Forschungszentrum Karlsruhe GmbHInventors: Florian Paul, Jürgen Hausselt, Joachim Binder, Hans-Joachim Ritzhaupt-Kleissl, Andre Giere, Patrick Scheele, Rolf Jakoby
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Publication number: 20090297804Abstract: The present invention relates to dielectric ceramics, thin and/or thick layers produced therefrom and a method for the production thereof and the use of the dielectrics and of the thin and/or thick layers.Type: ApplicationFiled: April 16, 2007Publication date: December 3, 2009Inventors: Florian Paul, Jürgen Hausselt, Joachim Binder, Hans-Joachim Ritzhaupt-Kleissl, Andre Giere, Patrick Scheele, Rolf Jakoby
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Patent number: 7566674Abstract: In dental ceramics containing zirconium dioxide and silicon-dioxide with a Zr/Si ratio of between 0.5 and 1.0, 1 to 12 wt % of aluminum oxide and up to 2 wt % of an alkali- or earth alkali metal oxide, those materials are selectively mixed with yttrium-stabilized zirconium dioxide with a Zr/Si ratio of the mixture being between 0.5 and 1 wt % and also a silicon organic compound as well as a compression aid, and a green body is formed from the mixture by milling, which green body is then sintered.Type: GrantFiled: February 12, 2007Date of Patent: July 28, 2009Assignee: Forschungszentrum Karlsruhe GmbHInventors: Joachim Binder, Jürgen Hausselt, Hans-Joachim Ritzhaupt-Kleissl, Nadja Schlechtriemen, Stefan Stolz
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Patent number: 7499625Abstract: The invention relates to a fiber optic material which comprises a polymer and at least one organic compound introduced therein. Said organic compound is a condensed aromatic ring system having two or more aromatic rings that are isocyclic or heterocyclic, wherein every heteroatom is associated with exactly one ring if the ring is heterocyclic. The fiber optic material according to the invention is preferably used for the core of an optical waveguide.Type: GrantFiled: March 20, 2004Date of Patent: March 3, 2009Assignee: Forschungszentrum Karlsruhe GmbHInventors: Thomas Hanemann, Johannes Böhm, Jürgen Hausselt
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Publication number: 20070221500Abstract: The invention relates to a method for producing ceramic structures and gradient structures whose particle size distribution has at least partly smaller values than the particle size distribution of the suspension from which the same are produced. According to the inventive method, a suspension containing ceramic particles is provided between a couple of electrodes, whereupon an electric field is applied to the couple of electrodes while the electrode surfaces of the couple of electrodes are placed perpendicular to a component of a gravitational field such that a fraction of the particles is deposited on the electrode of the couple of electrodes, which is located upstream of the component of the gravitational field, in the form of a ceramic structure.Type: ApplicationFiled: August 5, 2004Publication date: September 27, 2007Applicant: Forschungzentrum Karlsruhe GmbHInventors: Jurgen Hausselt, Melanie Dauscher, Holger Von Both
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Publication number: 20070142206Abstract: In dental ceramics containing zirconium dioxide and sili-con-dioxide with a Zr/Si ratio of between 0.5 and 1.0, 1 to 12 wt % of aluminum oxide and up to 2 wt % of an alkali - or earth alkali metal oxide, those materials are selectively mixed with yttrium-stabilized zirconium dioxide with a Zr/Si ratio of the mixture being between 0.5 and 1 wt % and also a silicon organic compound as well as a compression aid, and a green body is formed from the mixture by milling, which green body is then sintered.Type: ApplicationFiled: February 12, 2007Publication date: June 21, 2007Inventors: Joachim Binder, Jurgen Hausselt, Hans-Joachim Ritzhaupt-Kleissl, Nadja Schlechtriemen, Stefan Stolz
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Patent number: 7208037Abstract: The invention proposes to produce a mixture that is shrink-resistant, or has a freely selectable degree of shrinkage, and can be used as a molding compound, and a method for producing a corresponding oxide-ceramic sintered body. The molding compound comprises an intermetallic compound and a wax. In the method for producing an oxide-ceramic sintered body, a green body is molded from a molding compound of this type, dewaxed and sintered in an oxidizing atmosphere to form a ceramic sintered body. The molding compound is suited for producing dentures and dental fillings.Type: GrantFiled: July 31, 2001Date of Patent: April 24, 2007Assignee: Forschungszentrum Karlsruhe, GmbHInventors: Joachim Binder, Jürgen Hausselt, Hans-Joachim Ritzhaupt-Kleissl, Kirsten Honnef, Shikha Ray, Volker Hennige
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Publication number: 20060204202Abstract: The invention relates to a fiber optic material which comprises a polymer and at least one organic compound introduced therein. Said organic compound is a condensed aromatic ring system having two or more aromatic rings that are isocyclic or heterocyclic, wherein every heteroatom is associated with exactly one ring if the ring is heterocyclic. The fiber optic material according to the invention is preferably used for the core of an optical waveguide.Type: ApplicationFiled: March 20, 2004Publication date: September 14, 2006Applicant: Forschungszintrum Karlsruhe GmbHInventors: Thomas Hanemann, Johannes Bohm, Jurgen Hausselt
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Publication number: 20050140070Abstract: In a method of manufacturing metallic or ceramic microparts using a three-dimensional body formed by first and second polymer fractions in a two-component injection molding process, wherein one of the polymer fractions comprises an electrically non-conductive polymer and the second an electrically conductive polymer, the polymer fraction used for the first injection molding step has a higher melting point than the polymer fraction used in the second injection molding step and the metal micropart is formed by galvanic deposition of a metal from an electrolyte and the ceramic micropart is formed by electrophoretic deposition of ceramic material from a ceramic suspension or colloid on the electrically conductive polymer fraction surface of a substrate surface of the interim body.Type: ApplicationFiled: February 8, 2005Publication date: June 30, 2005Inventors: Guido Finnah, Jurgen Hausselt, Niis Holstein, Thomas Johann, Volker Piotter, Robert Ruprecht, Gerhard Schanz
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Publication number: 20040012127Abstract: The invention proposes to produce a mixture that is shrink-resistant, or has a freely selectable degree of shrinkage, and can be used as a molding compound, and a method for producing a corresponding oxide-ceramic sintered body. The molding compound comprises an intermetallic compound and a wax. In the method for producing an oxide-ceramic sintered body, a green body is molded from a molding compound of this type, dewaxed and sintered in an oxidizing atmosphere to form a ceramic sintered body. The molding compound is suited for producing dentures and dental fillings.Type: ApplicationFiled: August 4, 2003Publication date: January 22, 2004Inventors: Joachim Binder, Jurgen Hausselt, Hans-Joachim Ritzhaupt-Kleissl, Kirsten Honnef, Ray Sikha, Volker Hennige
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Patent number: 6632853Abstract: Dental composites containing hybrid fillers and process for their production. Dental compounds are disclosed which contain two- or multi-phase inorganic fillers in an organic polymer matrix. These are characterized by improved abrasion resistance.Type: GrantFiled: August 27, 2001Date of Patent: October 14, 2003Assignees: Degussa AG, Forschungszentrum Karlsruhe GmbHInventors: Jochen Alkemper, Joachim Binder, Harald Rentsch, Hans-Joachim Ritzhaupt-Kleissl, Jürgen Hausselt
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Patent number: 6573020Abstract: In a method for the manufacture, by means of lithography, of ceramic small and micro-parts, a pre-ceramic silicon containing polymer layer is deposited on a highly temperature resistant substrate and then dried at room temperature. The layer is then exposed in an image pattern to electromagnetic radiation and the exposed layer is developed in an organic solvent to remove the non-exposed areas. The preparation is then pyrolyzed at more than 900° C. and finally sintered at a temperature of at least 1600° C. to form a ceramic structured layer on the substrate.Type: GrantFiled: September 30, 2000Date of Patent: June 3, 2003Assignee: Forschungszentrum Karlsruhe GmbHInventors: Thomas Hanemann, Jürgen Hausselt
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Publication number: 20020045149Abstract: Dental composites containing hybrid fillers and process for their production. Dental compounds are disclosed which contain two- or multi-phase inorganic fillers in an organic polymer matrix. These are characterized by improved abrasion resistance.Type: ApplicationFiled: August 27, 2001Publication date: April 18, 2002Inventors: Jochen Alkemper, Joachim Binder, Harald Rentsch, Hans-Joachim Ritzhaupt-Kleissl, Jurgen Hausselt
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Patent number: 6362251Abstract: Dental material based on polymerizable (for example ethylenically unsaturated) monomers, epoxides, ormocers, liquid crystal monomers, oxethanes, spiro-orthoesters or spiro-carbonates as binders, a catalyst for cold, hot and/or photo-polymerization, and fillers, and a process for its preparation. Porous glass ceramics, a process for their preparation and uses thereof are also described. Dental materials according to the invention are suitable as alternative materials to the use of amalgam fillings.Type: GrantFiled: September 30, 1999Date of Patent: March 26, 2002Assignee: Degussa-Huls AktiengesellschaftInventors: Jochen Alkemper, Harald Rentsch, Klaus Dermann, Hans-Joachim Ritzhaupt-Kleissl, Jurgen Hausselt, Philipp Albert, Corinna Gall
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Patent number: 4606887Abstract: As replacements for noble metal containing alloys fused to porcelain in dental prosthetics there are needed alloys based on cobalt-chromium-tungsten which have a hardness of less than 300 (HV 5), can be veneered faced with known dental ceramics without problems and can be worked without problem with the customary working techniques. Such alloys contain in addition to 42-69.5 weight % cobalt, 10-35 weight % chromium, and 5-25 weight % tungsten, 2-10 weight % iron, 1-4 weight % aluminum, 0-5 weight % rhenium, and 0-2 weight % titanium, whereby the sum of the content oc chromium, tungsten, and rhenium is between 27.5 and 45 weight % and the sum of aluminum and titanium is below 5 weight %.Type: GrantFiled: May 25, 1984Date of Patent: August 19, 1986Assignee: Degussa AktiengesellschaftInventors: Jurgen Hausselt, Dieter Kaufmann, Udo Englisch
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Patent number: 4576790Abstract: Low gold dental alloys, especially for firing on dental porcelains, should be easily worked, result in no discolorations and bubble formation in the firing, and have a physiologically replaceable hardness and a low melting interval. These properties are shown by alloys having 20 to 35 wt. % gold and 45 to 65 wt. % palladium if they also contain(a) 6 to 15 wt. % copper and 0 to 10 wt. % nickel,(b) 0 to 12 wt. % indium, 0 to 12 wt. % tin, and 0 to 4 wt. % gallium, with the proviso that the sum of the content of indium and tin added to two and one-half times the gallium content must give a value between 5 and 15 wt. %,(c) 0.1 to 1 wt. % iridium and/or rhenium and/or ruthenium, and(d) optionally 0 to 1 wt. % aluminum, 0 to 1 wt. % tantalum, 0 to 1 wt. % titanium and/or 0 to 5 wt. % silver.Type: GrantFiled: January 28, 1985Date of Patent: March 18, 1986Assignee: Degussa AktiengesellschaftInventors: Josef Rothaut, Jurgen Hausselt, Rudi Steinke, Angela Klaus
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Patent number: 4468251Abstract: There are applied gold containing preparations as intermediate layers for facing fired on alloys with ceramic compositions in the dental art. These gold preparations should improve the adhesiveness, form a structured surface and make possible a saving in the consumption of gold. This is accomplished with preparations that contain 60 to 95% gold powder, at least 50% of which are platelet shaped particles, 5-40% of a binder and in a given case up to 20 of a powder as an adhesive which is made of metals and/or non-metals.Type: GrantFiled: August 17, 1981Date of Patent: August 28, 1984Assignee: Degussa AktiengesellschaftInventors: Jurgen Hausselt, Harry Schiwiora, Manfred Stumke, Klaus Lutz
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Patent number: 4369068Abstract: Gold-containing preparations which improve the adhesiveness, guarantee an esthetic appearance, and should make possible a saving in gold consumption are needed for the production of intermediate layers for the facings of fired on alloys in the dental art with ceramic compositions. This is accomplished with preparation that contain 50 to 94% gold powder having a particle size <30.mu., 5-40% binder made of organic solvent and resin components are 1-20% of a metal powder whose particle size is greater than of the gold powder used and whose melting temperature is above that of gold.Type: GrantFiled: August 10, 1981Date of Patent: January 18, 1983Assignee: Degussa AktiengesellschaftInventors: Jurgen Hausselt, Harry Schiwiora, Manfred Stumke