Patents by Inventor Markus Pridoehl
Markus Pridoehl 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: 7837892Abstract: Rubber compound containing at least one nanoscale, magnetic filler and at least one non-magnetic filler. Vulcanizable mixture containing the rubber compound and at least one crosslinking agent and/or vulcanization accelerator. Molding obtainable from the vulcanizable mixture by heat treatment or action of an electrical, magnetic or electromagnetic alternating field.Type: GrantFiled: August 20, 2005Date of Patent: November 23, 2010Assignee: Evonik Degussa GmbHInventors: Markus Pridoehl, Guido Zimmermann, Joachim Froehlich, Achim Gruber, Gregor Grun, Thomas Ruehle, Dirk W. Schubert
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Publication number: 20100264377Abstract: An aggregated crystalline silicon powder with a BET surface area of 20 to 150 m2/g is provided. The aggregated crystalline silicon may be doped with a doping component and can be used to produce electronic components.Type: ApplicationFiled: July 2, 2010Publication date: October 21, 2010Applicant: EVONIK DEGUSSA GMBHInventors: Markus Pridöhl, Paul Roth, Hartmut Wiggers, Frank-Martin Petrat, Michael Krämer
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Patent number: 7776304Abstract: Aggregated crystalline silicon powder with a BET surface area of 20 to 150 m2/g. It is prepared by subjecting at least one vaporous or gaseous silane and optionally at least one vaporous or gaseous doping material, an inert gas and hydrogen to heat in a hot wall reactor, cooling the reaction mixture or allowing the reaction mixture to cool and separating the product from gaseous substances in the form of a powder, wherein the proportion of silane is between 0.1 and 90 wt. %, with respect to the sum of silane, doping material, hydrogen and inert gases, and wherein the proportion of hydrogen, with respect to the sum of hydrogen, silane, inert gas and doping material, is in the range 1 mol. % to 96 mol. %. It can be used to produce electronic components.Type: GrantFiled: November 13, 2004Date of Patent: August 17, 2010Assignee: Evonik Degussa GmbHInventors: Markus Pridoehl, Paul Roth, Hartmut Wiggers, Frank-Martin Petrat, Michael Kraemer
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Publication number: 20100193746Abstract: An aggregated crystalline silicon powder with a BET surface area of 20 to 150 m2/g is provided. The aggregated silicon powder may be doped with phosphorus, arsenic, antimony, bismuth, boron, aluminium, gallium, indium, thallium, europium, erbium, cerium, praseodymium, neodymium, samarium, gadolinium, terbium, dysprosium, holmium, thulium, lutetium, lithium, ytterbium, germanium, iron, ruthenium, osmium, cobalt, rhodium, iridium, nickel, palladium, platinum, copper, silver, gold, or zinc.Type: ApplicationFiled: April 13, 2010Publication date: August 5, 2010Applicant: EVONIK DEGUSSA GmbHInventors: Markus PRIDOEHL, Paul ROTH, Hartmut WIGGERS, Frank-Martin PETRAT, Michael KRAEMER
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Publication number: 20090311506Abstract: In a production method for producing molded articles from fiber composites, superparamatic particles are selected which become coupled to an external alternating magnetic field. These superparamagnatic particles are added to a resin portion of a strip-shaped starting material further comprising reinforcing fibers. The strip-shaped starting material is then continuously advanced, and, while being advanced, heated by coupling-in an external alternating magnetic field to which the superparamagnatic particles in the resin portion become coupled. Next, the heated starting material is continuously molded into a molded article; and the resin portion in the molded particle is cured.Type: ApplicationFiled: August 21, 2009Publication date: December 17, 2009Applicant: EVONIK DEGUSSA GmbHInventors: Lars HERBECK, Thorsten MAHRHOLZ, Tobias STROEHLEIN, Juergen MOSCH, Michael FRAUENHOFER, Stefan BOEHM, Klaus DILGER, Harald HAEGER, Christian BARON, Markus PRIDOEHL
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Publication number: 20090230347Abstract: Formulation comprising a polymerizable monomer and/or a polymer and, dispersed therein, a superparamagnetic powder, which comprises aggregated primary particles, the primary particles being built up from magnetic metal oxide domains having a diameter of from 2 to 100 nm in a nonmagnetic metal oxide or metalloid oxide matrix. Process for heating the formulation in a magnetic or electromagnetic alternating field. Use of the formulation as an adhesive composition.Type: ApplicationFiled: November 29, 2005Publication date: September 17, 2009Applicant: DEGUSSA GmbHInventors: Markus Pridöhl, Guido Zimmermann, Michael Kröll, Harald Häger
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Patent number: 7569624Abstract: The invention concerns an adhesive composition for producing thermoset products, capable of being heated by means of an electric field, a magnetic field, an electromagnetic field or an alternating electromagnetic field, and containing filler particles which are metallic, ferromagnetic, ferrimagnetic, superparamagnetic or paramagnetic. Said adhesive composition can be hardened under the action of heat to form a high-resistance stable adhesive assembly, said resulting adhesive assemblies capable of being likewise dissociated under the action of heat.Type: GrantFiled: November 12, 2002Date of Patent: August 4, 2009Assignees: Degussa AG, Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Jana Kolbe, Thomas Kowalik, Matthias Popp, Monika Sebald, Oliver Schorsch, Stefan Heberer, Markus Pridoehl, Guido Zimmermann, Andreas Hartwig, Erwin Born
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Publication number: 20090165949Abstract: The invention relates to a method of bonding different materials of construction using hybrid materials comprising nanoscale, superparamagnetic, ferromagnetic, ferrimagnetic or paramagnetic powders enveloped or in part not enveloped by poly(meth)acrylates, and to their use.Type: ApplicationFiled: November 21, 2006Publication date: July 2, 2009Applicant: Evonik Roehm GmbHInventors: Sebastian Roos, Gerd Löhden, Jan Hendrik Schattka, Manfred Braum, Markus Pridöhl, Guido Zimmermann, Andreas Hüther
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Publication number: 20090159834Abstract: The invention relates to hybrid materials comprising polymers which envelop nanoscale, superparamagnetic, ferromagnetic, ferrimagnetic or paramagnetic powders, to a process for producing these materials and to their use.Type: ApplicationFiled: November 21, 2006Publication date: June 25, 2009Applicant: EVONIK ROEHM GMBHInventors: Sebastian Roos, Gerd Löhden, Jan Hendrik Schattka, Manfred Braum, Markus Pridöhl, Guido Zimmermann, Andreas Hüther
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Publication number: 20080292824Abstract: The invention relates to plastics composite mouldings obtainable via welding in an alternating electromagnetic field, in which the weld is obtained with the aid of a plastics material which comprises nano-scale, magnetic oxidic particles, which are composed of aggregated primary particles, and where the primary particles are composed of magnetic metal oxide domains whose diameter is from 2 to 100 nm in a non-magnetic metal oxide matrix or non-magnetic metalloid oxide matrix.Type: ApplicationFiled: September 15, 2006Publication date: November 27, 2008Applicant: EVONIK DEGUSSA GmbhInventors: Harald Haeger, Markus Pridoehl, Guido Zimmermann, Karl Kuhmann, Rainer Goering
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Publication number: 20080135799Abstract: Rubber compound containing at least one nanoscale, magnetic filler and at least one non-magnetic filler. Vulcanisable mixture containing the rubber compound and at least one crosslinking agent and/or vulcanisation accelerator. Moulding obtainable from the vulcanisable mixture by heat treatment or action of an electrical, magnetic or electromagnetic alternating field.Type: ApplicationFiled: August 20, 2005Publication date: June 12, 2008Inventors: Markus Pridoehl, Guido Zimmermann, Joachim Froehlich, Achim Gruber, Gregor Grun, Thomas Ruehle, Dirk W. Schubert
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Patent number: 7288501Abstract: Process and apparatus for the thermal treatment of pulverulent substances, in which the pulverulent substance is dispersed in a carrier gas and is passed in a continuous manner through a heated reactor where it is thermally treated and is then quenched by a cooling medium and is collected in a gas-solids separating unit.Type: GrantFiled: April 25, 2002Date of Patent: October 30, 2007Assignee: Umicore AG & Co., KGInventors: Emmanuel Auer, Peter Biberbach, Michael Gross, Andreas Gutsch, Markus Pridöhl, Karsten Ruth, Edwin Staab
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Publication number: 20070199477Abstract: A paste is provided having as solid phase at least one nanoscale powder and as liquid phase at least one dispersant, wherein the fraction of the nanoscale powder is 30% to 95% by weight and the fraction of the liquid phase is at least 5% by weight, based in each case on the total amount of the paste, the paste has a water content of less than 3% by weight of water and the liquid phase has a VOC content of less than 10 g/l, and the use of the paste in preparing dispersions, the dispersions prepared thereby, and use in a variety of other enduses.Type: ApplicationFiled: August 25, 2006Publication date: August 30, 2007Applicant: DEGUSSA AGInventors: Sven Hill, Kathrin Lehmann, Pedro Cavaleiro, Stefan Heberer, Markus Pridoehl
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Publication number: 20070172406Abstract: Aggregated, crystalline silicon powder with a BET surface of more than 50 m2/g. The powder is produced by continuously feeding at least one vaporous or gaseous silane and optionally at least one vaporous or gaseous doping substance and an inert gas into a reactor and mixing the components there, wherein the proportion of silane is between 0.1 and 90 wt. % referred to the sum total of silane, doping substance and inert gas, the mixture is caused to react by input of energy, wherein a plasma is produced by the input of energy by means of electromagnetic radiation in the microwave range at a pressure of 10 to 1100 mbar, the reaction mixture is allowed to cool and the reaction product is separated in the form of a powder from gaseous substances. The powder may be used for the production of electronic components.Type: ApplicationFiled: November 13, 2004Publication date: July 26, 2007Applicant: Degussa AGInventors: Markus Pridoehl, Paul Roth, Hartmut Wiggers, Peter Kress, Guido Zimmermann, Stefan Heberer, Frank-Martin Petrat
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Publication number: 20040229036Abstract: Composite powder with a matrix domain structure, in whichType: ApplicationFiled: April 12, 2004Publication date: November 18, 2004Applicant: DEGUSSA AGInventors: Heiko Gottfried, Stipan Katusic, Michael Kraemer, Markus Pridoehl, Willibald Wombacher, Guido Zimmermann
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Patent number: 6761747Abstract: An aqueous dispersion containing abrasive particles comprises abrasive particles having superparamagnetic metal oxide domains in a non-magnetic metal oxide or non-metal oxide matrix. The abrasive particles of the aqueous dispersion can have an average particle size of below 400 nm and a BET surface area of 50 to 600 m2/g. The dispersion can be produced by dispersing the abrasive particles with an energy of at least 200 kJ/m3 using a device in which the abrasive particles are first subjected to high pressure, then decompressed through a nozzle so that the abrasive particles collide with one another or against sections of wall in the device. The aqueous dispersion can be used for chemical mechanical polishing (CMP).Type: GrantFiled: October 24, 2002Date of Patent: July 13, 2004Assignee: Degussa AGInventors: Heiko Gottfried, Markus Pridoehl, Berthold Trageser, Guido Zimmermann, Stefan Heberer, Heike Muehlenweg
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Patent number: 6746767Abstract: Pyrogenic, oxidic particles contain superparamagnetic metal oxide domains with a diameter of 3 to 20 nm in a non-magnetic metal or non-metal oxide matrix. The particles display a chloride content of 50 to 1000 ppm. The particles are produced by pyrogenic processes by mixing the precursor of the superparamagnetic domains and the precursor of the non-magnetic metal or non-metal oxide matrix in a flame with air and/or oxygen and fuel gas and reacting this mixture in a flame. The particles can be used as ferro fluids, for example.Type: GrantFiled: August 16, 2002Date of Patent: June 8, 2004Assignee: Degussa AGInventors: Heiko Gottfried, Christian Janzen, Markus Pridoehl, Paul Roth, Berthold Trageser, Guido Zimmermann
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Publication number: 20030100187Abstract: An aqueous dispersion containing abrasive particles comprises abrasive particles having superparamagnetic metal oxide domains in a non-magnetic metal oxide or non-metal oxide matrix. The abrasive particles of the aqueous dispersion can have an average particle size of below 400 nm and a BET surface area of 50 to 600 m2/g. The dispersion can be produced by dispersing the abrasive particles with an energy of at least 200 kJ/m3 using a device in which the abrasive particles are first subjected to high pressure, then decompressed through a nozzle so that the abrasive particles collide with one another or against sections of wall in the device. The aqueous dispersion can be used for chemical mechanical polishing (CMP).Type: ApplicationFiled: October 24, 2002Publication date: May 29, 2003Applicant: Degussa AGInventors: Heiko Gottfried, Markus Pridoehl, Berthold Trageser, Guido Zimmermann, Stefan Heberer, Heike Muehlenweg
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Publication number: 20030059603Abstract: Pyrogenic, oxidic particles contain superparamagnetic metal oxide domains with a diameter of 3 to 20 nm in a non-magnetic metal or non-metal oxide matrix. The particles display a chloride content of 50 to 1000 ppm. The particles are produced by pyrogenic processes by mixing the precursor of the superparamagnetic domains and the precursor of the non-magnetic metal or non-metal oxide matrix in a flame with air and/or oxygen and fuel gas and reacting this mixture in a flame. The particles can be used as ferro fluids, for example.Type: ApplicationFiled: August 16, 2002Publication date: March 27, 2003Applicant: DEGUSSA AGInventors: Heiko Gottfried, Christian Janzen, Markus Pridoehl, Paul Roth, Berthold Trageser, Guido Zimmermann