Patents by Inventor Dieter Sporn
Dieter Sporn 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: 8604149Abstract: The invention relates to a method for producing a polysilane-polycarbosilane copolymer solution. Said method comprises the preparation of a polysilane, obtained by the disproportionation of a methylchlorodisilane or a mixture of methylchlorodisilanes of formula Si2MenC16-n with a Lewis base as the catalyst, a subsequent thermal cross-linking of the polysilane to form an infusible polysilane-polycarbosilane copolymer that is soluble in inert solvents, in addition to the production of said solution by the dissolution of the polysilane-polycarbosilane copolymer in an inert solvent. The invention also relates to a method for producing oxygen-depleted ceramic fibers and other molded bodies with a composition similar to that of SiC. Said method comprises the spinning of the solution to obtain green fibers according to the dry spinning method and the pyrolysis of the dried green fibers in an inert gas atmosphere or a reductive atmosphere.Type: GrantFiled: May 2, 2005Date of Patent: December 10, 2013Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Juergen Clade, Erich Seider, Dieter Sporn, Erika Brendler, Thomas Lange, Gerhard Roewer, Dorit Mainhold
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Patent number: 8466076Abstract: The present invention pertains to a process for producing unmeltable polysilane-polycarbosilane copolymers which are soluble in inert solvents, comprising the steps providing the product of a disproportionation of a methylchlorodisilane or a mixture of several methylchlorodisilanes of the composition Si2MenCl6-n, wherein n=1?4, wherein the disproportionation was carried out with a Lewis base as a catalyst, wherein this product is a chlorine-containing, crude polysilane/oligosilane containing hydrocarbon groups, and thermally postcrosslinking the crude polysilane/oligosilane to a polysilane-polycarbosilane copolymer, characterized in that the chlorine content of the polysilane-polycarbosilane copolymer is lowered by reacting the crude polysilane/oligosilane with a substitution agent, by which chlorine bound therein is replaced with a chlorine-free substituent. Green fibers and low-oxygen/oxygen-free ceramic fibers with a very low chlorine content can be produced using this process.Type: GrantFiled: December 21, 2009Date of Patent: June 18, 2013Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Arne Ruedinger, Juergen Clade, Heiko Spaniol, Dieter Sporn
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Publication number: 20130011675Abstract: The invention relates to a method for producing a polysilane-polycarbosilane copolymer solution from which a ceramic material having a ratio of silicon to carbon in the range of 0.8:1.0 to 1.1:1.0 can be obtained after removal of the solvent and pyrolysis, comprising the following steps: generating a chloric raw polysilane/oligosilane containing hydrocarbon groups by means of disproportioning a methylchlorodisilane or a mixture of a plurality of methylchlorodisilanes of the composition Si2MenCl6-n, where n=1-4, wherein the disproportioning takes place by means of a Lewis base as a catalyst, thermally post-cross-linking the raw polysilane/oligosilane into a non-melting polysilane-polycarbosilane copolymer that is soluble in a neutral solvent, and producing said solution by means of dissolving the polysilane-polycarbosilane in a neutral solvent.Type: ApplicationFiled: November 22, 2010Publication date: January 10, 2013Inventors: Juergen Clade, Arne Ruedinger, Dieter Sporn
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Publication number: 20120131882Abstract: The present invention relates to a method for producing a laminated vacuum-tight connection between the glass pane and the frame, wherein said connection is formed by a thermal soldering material and can be produced directly by a soldering process, during which soldering material inserted between the frame and the glass pane is melted. For this purpose, during the manufacturing process, the glass pane receives the properties of a tempered safety glass pane (TSG) pursuant to DIN 12150-1.Type: ApplicationFiled: May 26, 2009Publication date: May 31, 2012Inventors: Dieter Sporn, Werner Hartman, Rolf Ostertag, Jürgen Meinhardt, Manfred Krauss
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Publication number: 20110263780Abstract: The present invention pertains to a process for producing unmeltable polysilane-polycarbosilane copolymers which are soluble in inert solvents, comprising the steps providing the product of a disproportionation of a methylchlorodisilane or a mixture of several methylchlorodisilanes of the composition Si2MenCl6-n, wherein n=1-4, wherein the disproportionation was carried out with a Lewis base as a catalyst, wherein this product is a chlorine-containing, crude polysilane/oligosilane containing hydrocarbon groups, and thermally postcrosslinking the crude polysilane/oligosilane to a polysilane-polycarbosilane copolymer, characterized in that the chlorine content of the polysilane-polycarbosilane copolymer is lowered by reacting the crude polysilane/oligosilane with a substitution agent, by which chlorine bound therein is replaced with a chlorine-free substituent. Green fibers and low-oxygen/oxygen-free ceramic fibers with a very low chlorine content can be produced using this process.Type: ApplicationFiled: December 21, 2009Publication date: October 27, 2011Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Arne Ruedinger, Juergen Clade, Heiko Spaniol, Dieter Sporn
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Publication number: 20080207430Abstract: The present invention pertains to a method for producing a polysilane-polycarbosilane copolymer solution, which comprises the preparation of a polysilane, obtained by the disproportionation of a methylchlorodisilane or a mixture of methylchlorodisilanes of the formula Si2MenCl6-n with a Lewis base as the catalyst, a subsequent thermal crosslinking of the polysilane to form an infusible polysilane-polycarbosilane copolymer that is soluble in inert solvents, as well as the production of said solution by the dissolution of the polysilane-polycarbosilane copolymer in an inert solvent. In addition, the present invention also pertains to a method for producing oxygen-depleted ceramic fibers and other molded bodies having a composition similar to that of SiC.Type: ApplicationFiled: May 2, 2005Publication date: August 28, 2008Inventors: Jurgen Clade, Erich Seider, Dieter Sporn, Erika Brendler, Thomas Lange, Gerhard Roewer, Dorit Meinhold
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Publication number: 20080127727Abstract: The invention relates to a piezoelectric sensor which comprises a piezoelectric measuring transducer, an amplifier circuit and also at least one connection for external current or signal lines, these elements being integrated on or in a carrier structure. The sensor thereby enables measurement under different temperature conditions. The piezoelectric sensor according to the invention is used for oscillation, acceleration or deflection measurement, in particular in mechanical engineering, in air and space travel or in the automobile industry.Type: ApplicationFiled: February 14, 2006Publication date: June 5, 2008Applicant: Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V.Inventors: Bernhard Brunner, Dieter Sporn, Gerhard Domann, Peter Spies, Frank Forster, Javier Gutierrez Boronat, Ruth Houbertz-Krauss
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Patent number: 7297649Abstract: The present invention relates to novel alkylhalosilylaminoboranes, in particular alkylchlorosilylaminoboranes, which make it possible to adjust the viscosity of polyborosilazane compounds by varying the number of reactive centers, to novel borosilazane compounds, to novel oligoborosilazane or polyborosilazane compounds which have the structural feature R1—Si—NH—B—R2, where R1 or R2 or both is/are a hydrocarbon radical having from 1 to 20 carbon atoms, in particular an alkyl, phenyl or vinyl group, to silicon borocarbonitride ceramic powder, to ceramic material based on SiC, SiN and BN and to processes for producing each of these and to the use of the polyborosilazanes and the ceramic materials.Type: GrantFiled: September 14, 2001Date of Patent: November 20, 2007Assignee: Max-Planck-Gesellschaft Zur Forderung der Wissenschaften E.V.Inventors: Martin Jansen, Utz Müller, Jürgen Clade, Dieter Sporn
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Publication number: 20070155611Abstract: The present invention relates to novel alkylhalosilylaminoboranes, in particular alkylchlorosilylaminoboranes, which make it possible to adjust the viscosity of polyborosilazane compounds by varying the number of reactive centers, to novel borosilazane compounds, to novel oligoborosilazane or polyborosilazane compounds which have the structural feature R1—Si—NH—B—R2, where R1 or R2 or both is/are a hydrocarbon radical having from 1 to 20 carbon atoms, in particular an alkyl, phenyl or vinyl group, to silicon borocarbonitride ceramic powder, to ceramic material based on SiC, SiN and BN and to processes for producing each of these and to the use of the polyborosilazanes and the ceramic materials.Type: ApplicationFiled: September 14, 2001Publication date: July 5, 2007Inventors: Martin Jansen, Utz Muller, Jurgen Clade, Dieter Sporn
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Patent number: 7105224Abstract: The invention relates to oxide ceramic fiber composite materials that, e.g., according to the invention, are used in energy conversion installations. The present invention discloses a fundamentally new concept for the previously incompatible requirements of improved brittle fracture behavior to secure thermal shock stability and damage tolerance in the temperature range of <1000° C. and of mechanical high-temperature stability to guarantee long-term form stability (creep resistance) of components.Type: GrantFiled: May 21, 2004Date of Patent: September 12, 2006Assignee: Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.Inventors: Andreas Krell, Dieter Sporn, Paul Blank
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Publication number: 20050119106Abstract: The invention relates to a method for controlling the alertness of a human subject and a light source for use in this method and use of a light source for this method. The method comprises exposure of a human subject during an exposure period to suitable light radiation without substantially influencing the phase of a melatonin cycle. Melatonin is a sleep-hormone that can be used to control the alertness of a human subject The suitable light radiation being specified by an output fraction of melatonin suppressive radiation (Melatonin Watt/Watt) and light output (lumen/Watt), the output fraction and light output being adjusted to obtain the desired effect on the phase of said cycle.Type: ApplicationFiled: September 14, 2001Publication date: June 2, 2005Inventors: Martin Jansen, Utz Muller, Jurgen Clade, Dieter Sporn
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Patent number: 6860933Abstract: A sol-gel process for producing layers of zirconium oxide is described which comprises the following stages: (i) production of a soluble, zirconium-containing powder by: (a) reaction of a zirconium alcoholate of the general formula Zr(OR)4, in which the residues R are the same or different and represent straight-chain, branched or cyclic alkyl or alkenyl residues with 1 to 10 carbon atoms, which optionally exhibit one or more carbonyl and/or ester and/or carboxyl functions, with one or more polar compounds having complexing, chelating properties, (b) heating the solution, (c) mixing the solution with water, optionally in the presence of a catalyst, (d) concentrating the solution until a powder is obtained, (ii) dissolving the powder forming a sol, (iii) coating a substrate with the sol, and (iv) annealing the coated substrate.Type: GrantFiled: December 18, 2001Date of Patent: March 1, 2005Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten ForschungInventors: Peer Löbmann, Walther Glaubitt, Dieter Sporn
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Publication number: 20050003183Abstract: The invention relates to oxide ceramic fiber composite materials that, e.g., according to the invention, are used in energy conversion installations. The present invention discloses a fundamentally new concept for the previously incompatible requirements of improved brittle fracture behavior to secure thermal shock stability and damage tolerance in the temperature range of <1000° C. and of mechanical high-temperature stability to guarantee long-term form stability (creep resistance) of components.Type: ApplicationFiled: May 21, 2004Publication date: January 6, 2005Applicant: Fraunhofer-Gesellschaft zur Forderung Der Angewandten Forschung e. V.Inventors: Andreas Krell, Dieter Sporn, Paul Blank
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Patent number: 6403161Abstract: A sol-gel process for producing layers of zirconium oxide is described which comprises the following stages: (i) production of a soluble, zirconium-containing powder by: (a) reaction of a zirconium alcoholate of the general formula Zr (OR)4, in which the residues R are the same or different and represent straight-chain, branched or cyclic alkyl or alkenyl residues with 1 to 10 carbon atoms, which optionally exhibit one or more carbonyl and/or ester and/or carboxyl functions, with one or more polar compounds having complexing, chelating properties, (b) heating the solution, (c) mixing the solution with water, optionally in the presence of a catalyst, (d) concentrating the solution until a powder is obtained, (ii) dissolving the powder forming a sol, (iii) coating a substrate with the sol, and (iv) annealing the coated substrate.Type: GrantFiled: August 25, 2000Date of Patent: June 11, 2002Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung e.V.Inventors: Peer Löbmann, Walther Glaubitt, Dieter Sporn
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Publication number: 20020046683Abstract: A sol-gel process for producing layers of zirconium oxide is described which comprises the following stages:Type: ApplicationFiled: December 18, 2001Publication date: April 25, 2002Inventors: Peer Lobmann, Walther Glaubitt, Dieter Sporn
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Patent number: 6337835Abstract: The present invention relates to an electromechanical converter, a method of manufacturing same, as well as to a composite system including the electromechanical converter. The inventive electromechanical converter consists of at least one elongate fiber (1) made of a piezoelectric material. At least two electrodes (2) are provided at mutually spaced locations on the fiber (1) for subjecting the fiber to an electrical field. The electrodes (2) are in direct contact with the fiber (1) and enclose the fiber (1) partly or completely. The direct contact between the electrode and the fiber permits the optimum introduction of the electrical field into the fiber such that lower electrical potentials on the electrodes are sufficient for polarising the fiber. Another advantage resides in the aspect that the electrode is in direct contact with the fiber not only at one point but over part of the periphery of the fiber. This results in a further enhancement of the introduction of the electrical field.Type: GrantFiled: March 15, 2000Date of Patent: January 8, 2002Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Dieter Sporn, Winfried Watzka, Andreas Schönecker, Lutz Seffner, Kord Pannkoke
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Patent number: 5968859Abstract: The invention relates to new amorphous, high-strength SiBN(C) fibers which are at the same time resistant to high-temperature creep, their production and use. The fibers have a strength at room temperature of >2.5 GPa, a modulus of elasticity of >250 GPa and a creep value m of from 0.4 to 1 (in accordance with standard BSR test, 1 hour, 1400.degree. C.).Type: GrantFiled: August 12, 1998Date of Patent: October 19, 1999Assignee: Bayer AktiengesellschaftInventors: Hans-Peter Baldus, Nils Perchenek, Axel Thierauf, Ralf Herborn, Dieter Sporn
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Patent number: 5885519Abstract: The invention relates to new amorphous, high-strength SiBN(C) fibres which are at the same time resistant to high-temperature creep, their production and use.The fibres have a strength at room temperature of >2.5 GPa, a modulus of elasticity of >250 GPa and a creep value m of from 0.4 to 1 (in accordance with standard BSR test, 1 hour, 1400.degree. C.).Type: GrantFiled: March 13, 1997Date of Patent: March 23, 1999Assignee: Bayer AktiengesellschaftInventors: Hans-Peter Baldus, Nils Perchenek, Axel Thierauf, Ralf Herborn, Dieter Sporn
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Patent number: 5834388Abstract: The invention relates to new amorphous, high-strength SiBN(C) fibers which are at the same time resistant to high-temperature creep, their production and use. The fibers have a strength at room temperature of >2.5 GPa, a modulus of elasticity of >250 GPa and a creep value m of from 0.4 to 1 (in accordance with standard BSR test, 1 hour, 1400.degree. C.).Type: GrantFiled: August 6, 1997Date of Patent: November 10, 1998Assignee: Bayer AktiengesellschaftInventors: Hans-Peter Baldus, Nils Perchenck, Axel Thierauf, Ralf Herborn, Dieter Sporn