Patents by Inventor Klaus Albrecht
Klaus Albrecht 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: 10364899Abstract: A valve (1), in particular a vacuum valve, having at least one valve housing (2), at least one closure element (3), and at least one valve seat (4). The valve seat (4) surrounds at least one valve opening (5) of the valve (1), and the closure element (3) can be moved back and forth between at least one open position, in which the closure element (3) at least partly releases the valve opening (5), and a closed position, in which a sealing surface (8) of the closure element (3) is pressed against the valve seat (4) in order to close the valve opening (5), by at least one closure element drive (6, 7). At least one surface (9) of the valve (1) has an average surface roughness RZ less than or equal to 0.4 um, preferably less than or equal to 0.25 um.Type: GrantFiled: March 10, 2016Date of Patent: July 30, 2019Assignee: VAT HOLDING AGInventor: Klaus Albrecht
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Patent number: 9926387Abstract: The present invention relates to a continuous or semi-continuous freeze coagulation process for aqueous polymer dispersions, wherein said process comprises a freezing step and a solid-liquid separation step and is further characterized in that it comprises the further step of admixing water and/or water vapor between the freezing step and the solid-liquid separation step.Type: GrantFiled: November 6, 2014Date of Patent: March 27, 2018Assignee: Evonik Roehm GmbHInventors: Dominic Stoerkle, Andreas Weber, Johannes Vorholz, Melanie Jungkamp, Marcus Denger, Norbert Hoffmann, Mona Rueppel, Reiner Mueller, Klaus Albrecht
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Publication number: 20180051813Abstract: A valve (1), in particular a vacuum valve, having at least one valve housing (2), at least one closure element (3), and at least one valve seat (4). The valve seat (4) surrounds at least one valve opening (5) of the valve (1), and the closure element (3) can be moved back and forth between at least one open position, in which the closure element (3) at least partly releases the valve opening (5), and a closed position, in which a sealing surface (8) of the closure element (3) is pressed against the valve seat (4) in order to close the valve opening (5), by at least one closure element drive (6, 7). At least one surface (9) of the valve (1) has an average surface roughness RZ less than or equal to 0.4 um, preferably less than or equal to 0.25 um.Type: ApplicationFiled: March 10, 2016Publication date: February 22, 2018Applicant: VAT Holding AGInventor: Klaus Albrecht
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Publication number: 20160280809Abstract: The present invention relates to a continuous or semi-continuous freeze coagulation process for aqueous polymer dispersions, wherein said process comprises a freezing step and a solid-liquid separation step and is further characterized in that it comprises the further step of admixing water and/or water vapor between the freezing step and the solid-liquid separation step.Type: ApplicationFiled: November 6, 2014Publication date: September 29, 2016Applicant: Evonik Roehm GmbHInventors: Dominic STOERKLE, Andreas WEBER, Johannes VORHOLZ, Melanie JUNGKAMP, Marcus DENGER, Norbert HOFFMANN, Mona RUEPPEL, Reiner MUELLER, Klaus ALBRECHT
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Patent number: 9108339Abstract: The present invention relates to a process for the production of coated mouldings, by injecting a moulding composition into an injection mould and cooling the composition to obtain a moulding, and altering the injection mould in such a way as to produce an intermediate space between a surface to be coated of the moulding and the inner surface of the injection mould, and using injection moulding to charge a reactive mixture to the resultant intermediate space, where the temperature of at least a portion of the injection mould is increased for the curing of the reactive mixture. The present invention moreover describes a system for the conduct of the process described above.Type: GrantFiled: August 18, 2008Date of Patent: August 18, 2015Assignees: Evonik Röhm GmbH, Krauss Maffei Technologies GmbHInventors: Arne Schmidt, Christian Eberle, Marc Poth, Klaus Albrecht, Erwin Buerkle, Martin Eichlseder
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Patent number: 9067389Abstract: The invention describes a transparent plastics composite composed of PMMA and TPU with excellent mechanical properties.Type: GrantFiled: March 14, 2007Date of Patent: June 30, 2015Assignee: Evonik Roehm GmbHInventors: Werner Hoess, Michael Zietek, Michael Enders, Christian Eberle, Sven Schroebel, Klaus Albrecht, Rudolf Blass, Klaus Schultes, Arne Schmidt
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Patent number: 8975337Abstract: A molding compound comprises a copolymer (I)a), produced by polymerization of 90-100% by weight methylmethacrylate, styrene and malic acid anhydride, and optionally 0-10% by weight additional monomers which can be copolymerized with methylmethacrylate, a (co)polymer (II)b), produced by polymerization of 80-100% by weight methylmethacrylate and optionally 0-20% by weight additional monomers which can be copolymerized with methylmethacrylate, and has a solution viscosity in chloroform at 25° C. (ISO 1628 Part 6) of 50 to 55 ml/g, as well as c) optional conventional additives, auxiliary agents and/or fillers. The molding compound is characterized in that the copolymer (I) has a solution viscosity in chloroform at 25° C. (ISO 1628 Part) of 55 ml/g or less. Also disclosed are moldings produced by thermoplastic processing of the molding compound and their uses.Type: GrantFiled: September 23, 2011Date of Patent: March 10, 2015Assignee: Evonik Röhm GmbHInventors: Werner Hoess, Michael Wicker, Klaus Schultes, Klaus Albrecht, Martin Mohrmann
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Patent number: 8956097Abstract: A staple strip having a plurality of staples connected together for fastening insulating panels to wooden supports, wherein each of the staples has a crown and two legs disposed parallel to each other, connected to the crown, the length of the legs is at least three time as long as the width of the crown, each leg has a cylindrical section and an end section, and each end section tapers with increasing distance from the cylindrical section, and converges tapered to a point disposed on a center longitudinal axis of the respective leg.Type: GrantFiled: March 22, 2013Date of Patent: February 17, 2015Assignee: Joh. Friedrich Behrens AGInventor: Klaus Albrecht
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Patent number: 8609011Abstract: The invention relates to an injection molding method for the production of a complex, high optical quality light-diffusing molded item. The molding material used comprises a matrix made of polymethyl(meth)acrylate and spherical plastic particles whose particle size ranges from 1-24 ?m and the concentration thereof ranges from 0.05-30 wt.-% in relation to the weight of the polymethyl(meth)acrylate. The spherical particles exhibit a refractive index differential in relation to the polymethyl(meth)acrylate matrix of 0.01 0.2.Type: GrantFiled: March 2, 2004Date of Patent: December 17, 2013Assignee: Evonik Roehm GmbHInventors: Werner Hoess, Arne Schmidt, Klaus Albrecht, Klaus Schultes
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Patent number: 8598280Abstract: Process for preparing molding materials MM with improved optical and color properties, consisting of a polymer PM which contains units of the formula I in which R1 and R2 are each hydrogen and methyl and R3 is hydrogen, C1-C18-alkyl, C5-C8-cycloalkyl, C6-C10-aryl, C6-C10-aryl-C1-C4-alkyl, where these radicals may be up to trisubstituted by radicals selected from the group consisting of C1-C4-alkoxy and halogen, prepared in an imidation reaction known per se in a reactive extruder, in which, on completion of the imidation reaction, an amount of one or more reducing phosphorus compounds P which is effective for color stabilization is added to the polymer PM, characterized in that the phosphorus compounds are organic phosphorus compounds OP selected from the group consisting of compounds of the formula II in which R4 and R5 are each independently hydrogen or an aromatic 6-membered ring which may be up to pentasubstituted by a C1-C4-alkyl and/or C5-C8-cycloalkyl groups.Type: GrantFiled: February 27, 2009Date of Patent: December 3, 2013Assignee: Evonik Roehm GmbHInventors: Victor Khrenov, Krzysztof Sado, Nils Mehler, Klaus Schultes, Klaus Albrecht
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Publication number: 20130251477Abstract: A staple strip having a plurality of staples connected together for fastening insulating panels to wooden supports, wherein each of the staples has a crown and two legs disposed parallel to each other, connected to the crown, the length of the legs is at least three time as long as the width of the crown, each leg has a cylindrical section and an end section, and each end section tapers with increasing distance from the cylindrical section, and converges tapered to a point disposed on a center longitudinal axis of the respective leg.Type: ApplicationFiled: March 22, 2013Publication date: September 26, 2013Applicant: Joh. Friedrich Behrens AGInventor: Klaus Albrecht
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Publication number: 20120015141Abstract: A moulding compound comprises a copolymer (I)a), produced by polymerisation of 90-100% by weight methylmethacrylate, styrene and malic acid anhydride, and optionally 0-10% by weight additional monomers which can be copolymerised with methylmethacrylate, a (co)polymer (II)b), produced by polymerisation of 80-100% by weight methylmethacrylate and optionally 0-20% by weight additional monomers which can be copolymerised with methylmethacrylate, and has a solution viscosity in chloroform at 25° C. (ISO 1628 Part 6) of 50 to 55 ml/g, as well as c) optional conventional additives, auxiliary agents and/or fillers. The moulding compound is characterised in that the copolymer (I) has a solution viscosity in chloroform at 25° C. (ISO 1628 Part) of 55 ml/g or less. Also disclosed are mouldings produced by thermoplastic processing of the moulding compound and their uses.Type: ApplicationFiled: September 23, 2011Publication date: January 19, 2012Applicant: Evonik Roehm GmbHInventors: Werner Hoess, Michael Wicker, Klaus Schultes, Klaus Albrecht, Martin Mohrmann
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Publication number: 20110230610Abstract: The invention relates to a polymer mixture, comprising a) a polymer matrix which is composed of a (meth)acrylate (co)polymer or of a mixture of (meth)acrylate (co)polymers with a Vicat softening point VSP (ISO 306-B50) of at least 104° C. and/or of a (meth)acrylimide (co)polymer, b) an impact modifier which is based on crosslinked poly(meth)acrylates and which does not have covalent bonding to the polymer matrix a), c) from 1 to 15% by weight of plastics particles composed of crosslinked polymers based on polymethyl methacrylate, on polystyrene and/or on polysilicones. The polymer mixture can be used to obtain injection mouldings with matt surfaces and Vicat softening points VSPs (ISO 306-B50) of at least 90° C.Type: ApplicationFiled: May 25, 2011Publication date: September 22, 2011Applicant: ROEHM GMBH & CO. KGInventors: Klaus Schultes, Michael Wicker, Peter Kempf, Werner Hoß, Klaus Albrecht, Ursula Golchert, Stefan Nau
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Publication number: 20110015317Abstract: Process for preparing moulding materials MM with improved optical and colour properties, consisting of a polymer PM which contains units of the formula I in which R1 and R2 are each hydrogen and methyl and R3 is hydrogen, C1-C18-alkyl, C5-C8-cycloalkyl, C6-C10-aryl, C6-C10-aryl-C1-C4-alkyl, where these radicals may be up to trisubstituted by radicals selected from the group consisting of C1-C4-alkoxy and halogen, prepared in an imidation reaction known per se in a reactive extruder, in which, on completion of the imidation reaction, an amount of one or more reducing phosphorus compounds P which is effective for colour stabilization is added to the polymer PM, characterized in that the phosphorus compounds are organic phosphorus compounds OP selected from the group consisting of compounds of the formula II in which R4 and R5 are each independently hydrogen or an aromatic 6-membered ring which may be up to pentasubstituted by a C1-C4-alkyl and/or C5-C8-cycloalkyl groups.Type: ApplicationFiled: February 27, 2009Publication date: January 20, 2011Applicant: Evonik Roehm GmbHInventors: Victor Khrenov, Krzysztof Sado, Nils Mehler, Klaus Schultes, Klaus Albrecht
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Publication number: 20100272960Abstract: Composition for the production of mouldings having a matt and structured surface character, comprising a polymer matrix and crosslinked polymer particles, the polymer matrix comprising at least one acrylic polymer and the composition containing (i) first crosslinked polymer particles having a volume average of the particle size in the range from 30 ?m to 1500 ?m and (ii) second crosslinked polymer particles having a volume average of the particle size of less than 30 ?m, the difference between the refractive index of the first polymer particles and the refractive index of the polymer matrix, measured in each case at 25° C., being less than 0.015 as an absolute value and the difference between the refractive index of the second polymer particles and the refractive index of the polymer matrix, measured at 25° C., being greater than or equal to 0.015 as an absolute value.Type: ApplicationFiled: August 29, 2008Publication date: October 28, 2010Applicant: Evonik Roehm GmbHInventors: Klaus Schultes, Sabine Schwarz-Barac, Klaus Albrecht, Ursula Golchert, Stefan Nau, Sabrina Thomas, Michael Schnabel
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Patent number: 7790079Abstract: (EN) The invention concerns a method for producing a thermoplastic molding material or element, said material or element containing nanometric inorganic particles. In molten state, the thermoplastic is mixed with the nanometric inorganic particles and with a solubilizing agent in a conveyor screw extruder, the pressures and temperatures being adjusted so that the plastic is in melt form and the solubilizing agent in supercritical state. The invention is characterized in that at the output of the extruder, the mixture passes through a slot with a passage less than 20 $g(m)m to penetrate into an expansion zone and the molten material, wherein are incorporated the nanometric inorganic particles, is evacuated, reduced into molding material after cooling or transferred into a molding tool to be molded. The invention also concerns the molding material and the molding elements obtained by this method, as well as the uses thereof.Type: GrantFiled: April 11, 2006Date of Patent: September 7, 2010Assignee: Evonik Rohm GmbHInventors: Werner Hoess, Klaus Albrecht, Krzysztof Sado, Harald Haeger
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Publication number: 20100213636Abstract: The present invention relates to a process for the production of coated mouldings, by injecting a moulding composition into an injection mould and cooling the composition to obtain a moulding, and altering the injection mould in such a way as to produce an intermediate space between a surface to be coated of the moulding and the inner surface of the injection mould, and using injection moulding to charge a reactive mixture to the resultant intermediate space, where the temperature of at least a portion of the injection mould is increased for the curing of the reactive mixture. The present invention moreover describes a system for the conduct of the process described above.Type: ApplicationFiled: August 18, 2008Publication date: August 26, 2010Applicants: Evonik Roehm GmbH, KRAUSS MAFFEI TECHNOLOGIES GmbHInventors: Arne Schmidt, Christian Eberle, Marc Poth, Klaus Albrecht, Erwin Buerkle, Martin Eichlseder
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Core and shell particle for modifying impact resistance of a mouldable poly (meth) acrylate material
Patent number: 7695813Abstract: The present invention relates to a core-shell particle which has a core, a first shell and, where appropriate, a second shell, where: i) the core encompasses, based on its total weight, at least 75.0% by weight of (meth)acrylate repeat units; ii) the first shell has a glass transition temperature below 30° C.; iii) the second shell present where appropriate encompassed, based on its total weight, at lest 75.0% by weight of (meth)acrylate repeat units; iv) the first shell encompasses, based on its total weight, the following constituents; E) from 92.0 to 98.0% by weight of (meth)acrylate repeat units and F) from 2.0 to 8.0% by weight of styrenic repeat units of the general formula (I) ?where the radicals R1 to R6 are defined according to the Description and the percentages by weight of E) and F) give a total of 100.0% by weight, v) the radius of the core-shell particle inclusive of any second shell present, measured by the Coulter method, is in the range from above 160.0 to 240.Type: GrantFiled: October 18, 2003Date of Patent: April 13, 2010Assignee: Roehm GmbH & Co. KGInventors: Klaus Schultes, Reiner Mueller, Andreas Spiess, Klaus Albrecht, Werner Hoess -
Patent number: D687695Type: GrantFiled: September 1, 2011Date of Patent: August 13, 2013Assignee: Joh. Friedrich Behrens AGInventor: Klaus Albrecht
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Patent number: D699535Type: GrantFiled: August 28, 2012Date of Patent: February 18, 2014Assignee: Joh. Friedrich Behrens AGInventor: Klaus Albrecht