Patents by Inventor Bernd Kayser
Bernd Kayser 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: 8101304Abstract: The present invention relates to a process for the concentration of noble metals from fluorine-containing components of fuel cells, for example from PEM fuel cell stacks, DMFC fuel cells, catalyst-coated membranes (CCMs), membrane electrode assemblies (MEAs), catalyst pastes, etc. The process is based on an optionally multi-step heat treatment process comprising a combustion and/or a melting process. It allows an inexpensive, simple concentration of noble materials. The hydrogen fluoride formed during the heat treatment of fluorine-containing components is bound by an inorganic additive so that no harmful hydrogen fluoride emissions occur. The process can be used for the recovery of noble metals that are present as components in fuel cells, electrolysis cells, batteries, and the like.Type: GrantFiled: May 17, 2004Date of Patent: January 24, 2012Assignee: Umicore AG & Co. KGInventors: Christian Hagelüken, Bernd Kayser, José-Manuel Romero-Ojeda, Ingo Kleinwächter
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Patent number: 7951969Abstract: The present invention relates to a process for the preparation of indium acetate comprising the steps: (a) reacting an indium compound with an alkaline compound in a protic solvent to obtain an iridium containing precipitate, where the reaction is conducted in the presence of at least one component (i) selected from oxalic acid, a salt of oxalic acid, formic acid and a salt of formic acid, (b) reacting the precipitate in the presence of at least (i) one compound selected from oxalic acid, a salt of oxalic acid, formic acid and a salt of formic acid, and (ii) CH3CO2H and/or CH3(CO)O(CO)CH3 to give an iridium acetate containing solution. The invention also relates to indium acetate having a low halide content, to an indium containing precipitate and to uses of the iridium containing precipitate of the present invention and the iridium acetate of the present invention.Type: GrantFiled: May 24, 2006Date of Patent: May 31, 2011Assignee: Umicore AG & Co. KGInventors: Ralf Karch, Bernd Kayser, Andreas Rivas-Nass, Jürgen Bodo Widmer, Roland Winde, Eileen Wörner
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Publication number: 20100234628Abstract: The present invention relates to a process for the preparation of indium acetate comprising the steps: (a) reacting an indium compound with an alkaline compound in a protic solvent to obtain an iridium containing precipitate, where the reaction is conducted in the presence of at least one component (i) selected from oxalic acid, a salt of oxalic acid, formic acid and a salt of formic acid, (b) reacting the precipitate in the presence of at least (i) one compound selected from oxalic acid, a salt of oxalic acid, formic acid and a salt of formic acid, and (ii) CH3CO2H and/or CH3(CO)O(CO)CH3 to give an iridium acetate containing solution. The invention also relates to indium acetate having a low halide content, to an indium containing precipitate and to uses of the iridium containing precipitate of the present invention and the iridium acetate of the present invention.Type: ApplicationFiled: May 24, 2006Publication date: September 16, 2010Inventors: Ralf Karch, Bernd Kayser, Andreas Rivas-Nass, Jurgen Bodo Widmer, Roland Winde, Eileen Worner
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Patent number: 7615659Abstract: The present invention relates to a process for preparing a palladium(0) compound, comprising the reaction of a palladium compound with one or more compounds of the general formula I, II or III in the presence of a base: Term-O—{[Si(R16)(CR19CR17R18)O]v[Si(R20)2O]w}-Term ??(III). The Palladium(0) compounds are suitable as homogeneous catalysts, as a precursor for preparing homogeneous catalysts, as a precursor for preparing homogeneous catalysts in situ or as a precursor for preparing heterogeneous catalysts.Type: GrantFiled: October 30, 2003Date of Patent: November 10, 2009Assignee: Umicore AG & Co. KGInventors: Bernd Kayser, Ralf Karch, Oliver Briel, Ingo Kleinwächter
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Patent number: 7268233Abstract: The invention relates to novel monocarbene complexes of nickel, palladium or platinum with electron-deficient olefin ligands, to their preparation and to their use in the homogeneous catalysis of organic reactions.Type: GrantFiled: August 7, 2003Date of Patent: September 11, 2007Assignee: Umicore AG & Co. KGInventors: Ralf Karch, Oliver Briel, Bernd Kayser, Matthias Beller, Kumaravel Selvakumar, Anja Frisch, Alexander Zapf
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Publication number: 20060275652Abstract: The present invention relates to a process for the concentration of noble metals from fluorine-containing components of fuel cells, for example from PEM fuel cell stacks, DMFC fuel cells, catalyst-coated membranes (CCMs), membrane electrode assemblies (MEAs), catalyst pastes, etc. The process is based on an optionally multi-step heat treatment process comprising a combustion and/or a melting process. It allows an inexpensive, simple concentration of noble materials. The hydrogen fluoride formed during the heat treatment of fluorine-containing components is bound by an inorganic additive so that no harmful hydrogen fluoride emissions occur. The process can be used for the recovery of noble metals that are present as components in fuel cells, electrolysis cells, batteries, and the like.Type: ApplicationFiled: May 17, 2004Publication date: December 7, 2006Inventors: Christian Hageluken, Bernd Kayser, Jose-Manuel Romero-Ojeda, Ingo Kleinwachter
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Publication number: 20060122398Abstract: The invention relates to novel monocarbene complexes of nickel, palladium or platinum with electron-deficient olefin ligands, to their preparation and to their use in the homogeneous catalysis of organic reactions.Type: ApplicationFiled: August 7, 2003Publication date: June 8, 2006Inventors: Ralf Karch, Oliver Briel, Bernd Kayser, Matthias Beller, Kumaravel Selvakumar, Anja Frisch, Alexander Zapf
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Publication number: 20060106239Abstract: The present invention relates to a process for preparing a palladium(0) compound, comprising the reaction of a palladium compound with one or more compounds of the general formula I, II or III in the presence of a base: Term-O—{[Si(R16)(CR19CR17R18)O]v[Si(R20)2O]w}-Term ??(III). The Palladium(0) compounds are suitable as homogeneous catalysts, as a precursor for preparing homogeneous catalysts, as a precursor for preparing homogeneous catalysts in situ or as a precursor for preparing heterogeneous catalysts.Type: ApplicationFiled: October 30, 2003Publication date: May 18, 2006Inventors: Bernd Kayser, Ralf Karch, Oliver Briel, Ingo Kleinwachter
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Publication number: 20040166361Abstract: The present invention provides a surface coating of platinum in which the coating is formed from platinum in a black modification. This can be obtained by applying an organic platinum complex compound with platinum in the oxidation state 0 that decomposes thermally at temperatures below 200° C., or a coating composition which consists substantially of such a platinum complex compound, to the surface of a substrate and then thermally decomposing the platinum complex compound. The surface coatings can be used in many ways, for example as protective layers against mechanical and/or chemical and/or thermal effects, as antiadhesion layers, as antireflective layers or as catalytically active layers.Type: ApplicationFiled: April 12, 2004Publication date: August 26, 2004Inventors: Michael Oechsle, Ralf Karch, Bernd Kayser
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Patent number: 6573326Abstract: The invention relates to thickeners based on fully or partially hydrolyzed vinyl alcohol copolymers with a molecular weight Mw greater than 100,000, obtainable by hydrolyzing vinyl acetate copolymers which, besides vinyl acetate units, also contain comonomer units which derive from one or more comonomers selected from the group consisting of 1-(C1-5)-alkylvinyl esters of C1-5 carboxylic acids, allyl esters, vinyl esters of alpha-branched C5-12 carboxylic acids, and C1-18-alkyl (meth)acrylates, in the form of their aqueous solution or in powder form.Type: GrantFiled: August 9, 2001Date of Patent: June 3, 2003Assignee: Wacker-Chemie GmbHInventors: Theo Mayer, Werner Bauer, Harald Zeh, Bernd Kayser, Andreas Bacher, Ulf Dietrich
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Publication number: 20020195025Abstract: Cement-containing or cement-free building material compositions containing a pulverulent rheological additive comprising: a) soluble a copolymer of (meth)acrylic acid and (meth)acrylic esters, b) a dispersant, and c) a polymer powder which is redispersible in water provide mortars, adhesives, grouts, etc., with excellent processability cured properties.Type: ApplicationFiled: May 9, 2002Publication date: December 26, 2002Inventors: Andreas Bacher, Werner Bauer, Ulf Dietrich, Bernd Kayser, Marion Schmitz, Harald Zeh, Theo Mayer
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Publication number: 20020198292Abstract: Etherified vinyl alcohol polymers based on partially or completely hydrolyzed vinyl acetate homopolymers or copolymers, containing from 0.1 to 100 mol % of whose vinyl alcohol groups of the formula (I) —CH2-CHR—O—R1, R is H or CH3, and R1 in the etherified vinyl alcohol polymers is identical or different and is unsubstituted or substituted alkyl, aryl, or alkaryl radicals each having from 1 to 30 carbon atoms, the substituents selected from the group consisting of halogen, hydroxyl, amine, ammonium, carboxylic acid, carboxylic ester, carboxamide, ether, keto, sulfonic acid, phosphonate, nitrate, and polyoxyalkylene radicals having from 2 to 50 C2-8 oxyalkylene units are useful as thickeners in liquid-containing compositions, particularly hydraulically and non-hydraulically setting construction formulations such as cements, plasters, mortars, adhesives, and renders.Type: ApplicationFiled: April 18, 2002Publication date: December 26, 2002Applicant: Wacker-Chemie GmbHInventors: Bernd Kayser, Werner Bauer, Ulf Dietrich, Andreas Bacher, Marion Schmitz, Harald Zeh, Theo Mayer
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Publication number: 20020045684Abstract: A thickener based vinyl alcohol copolymers and cellulose ethers, containingType: ApplicationFiled: August 1, 2001Publication date: April 18, 2002Applicant: Wacker-Chemie GmbHInventors: Andreas Bacher, Werner Bauer, Ulf Dietrich, Bernd Kayser, Marion Schmitz, Harald Zeh, Theo Mayer, Hardy Herold
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Publication number: 20020042459Abstract: The invention relates to thickeners based on fully or partially hydrolyzed vinyl alcohol copolymers with a molecular weight Mw greater than 100,000, obtainable by hydrolyzing vinyl acetate copolymers which, besides vinyl acetate units, also contain comonomer units which derive from one or more comonomers selected from the group consisting of 1-(C1-5)-alkylvinyl esters of C1-5 carboxylic acids, allyl esters, vinyl esters of alpha-branched C5-12 carboxylic acids, and C1-18-alkyl (meth)acrylates, in the form of their aqueous solution or in powder form.Type: ApplicationFiled: August 9, 2001Publication date: April 11, 2002Applicant: Wacker-Chemie GmbHInventors: Theo Mayer, Werner Bauer, Harald Zeh, Bernd Kayser, Andreas Bacher, Ulf Dietrich
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Publication number: 20020040078Abstract: The invention relates to the use of acetalized vinyl alcohol polymers with a molecular weight Mw greater than 100 000 as thickeners, the thickeners being obtained by acetalizing partially or fully hydrolyzed vinyl acetate homopolymers, or partially or fully hydrolyzed vinyl acetate copolymers which, besides vinyl acetate units, also contain comonomer units which derive from one or more comonomers selected from the group consisting of 1-(C1-5) alkylvinyl esters of C1-5 carboxylic acids, allyl esters, vinyl esters of alpha-branched C1-12 carboxylic acids, and C1-8-alkyl (meth)acrylates.Type: ApplicationFiled: August 9, 2001Publication date: April 4, 2002Applicant: Wacker-Chemie GmbHInventors: Bernd Kayser, Andreas Bacher, Werner Bauer, Ulf Dietrich, Marion Schmitz, Harald Zeh, Theo Mayer