Patents Assigned to Degussa-Huls Aktiengesellschaft
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Patent number: 6841360Abstract: This invention relates to isolated polynucleotides containing at least one of the polynucleotide sequences selected from the group a) polynucleotide which is at least 70% identical to a polynucleotide which codes for a polypeptide containing at least one amino acid sequence of SEQ ID no. 3 or 5, b) polynucleotide which codes for a polypeptide which contains an amino acid sequence which is at least 70% identical to the amino acid sequence of SEQ ID no. 3 or 5, c) polynucleotide which is complementary to the polynucleotides of a), b) or c), and d) polynucleotide containing at least 15 successive bases of the polynucleotide sequences of a), b) or c). wherein the polypeptides exhibit the biological activity of the enzymes for which the brnE or bernF (sic)gene codes and a process for the fermentative production of branched-chain L-amino acids with amplification of the stated genes.Type: GrantFiled: June 30, 2003Date of Patent: January 11, 2005Assignees: Degussa-Huls Aktiengesellschaft, Forschungszentrum Julich GmbHInventors: Nicole Kennerknecht, Hermann Sahm, Lothar Eggeling, Walter Pfefferie
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Publication number: 20040110262Abstract: A novel rec-L-N-carbamoylase from Arthrobacter aurescens and its method of use for producing L-amino acids. The recombinantly produced L-carbamoylase is unexpectedly stable, so that an industrial method of producing L-amino acids can be established with it, in contrast to previously known L-carbamoylases.Type: ApplicationFiled: January 15, 2002Publication date: June 10, 2004Applicants: Degussa-Huls Aktiengesellschaft, Universitat Stuttgart, Roche Diagnostics GmbHInventors: Josef Altenbuchner, Ralf Mattes, Markus Pietzsch, Christoph Syldatk, Anja Wiese, Burkard Wilms
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Patent number: 6746855Abstract: The invention relates to L-lysine-producing strains of corynebacteria with enhanced lysE gene (lysine export carrier gene), in which strains additional genes chosen from the group comprising the dapA gene (dihydrodipicolinate synthase gene), the lysC gene (aspartate kinase gene), the dapB gene (dihydrodipicolinate reductase gene) and the pyc gene, but especially the dapA gene and the lysC gene (aspartate kinase gene), are enhanced and, in particular, over-expressed, and to a process for the preparation of L-lysine.Type: GrantFiled: January 8, 2003Date of Patent: June 8, 2004Assignees: Dégussa-Hüls Aktiengesellschaft, Forschungszentrum Jülich GmbHInventors: Caroline Kreutzer, Stephan Hans, Mechthild Rieping, Bettina Mockel, Walter Pfefferle, Lothar Eggeling, Hermann Sahm, Miroslav Patek
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Publication number: 20040014123Abstract: This invention relates to isolated polynucleotides containing at least one of the polynucleotide sequences selected from the groupType: ApplicationFiled: June 30, 2003Publication date: January 22, 2004Applicants: Degussa-Huls Aktiengesellschaft, Forschungszentrum Julich GmbHInventors: Nicole Kennerknecht, Hermann Sahm, Lothar Eggeling, Walter Pfefferle
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Patent number: 6677264Abstract: A catalyst for purifying exhaust gases of a diesel engine. The catalyst contains two functional layers superimposed on an inert supporting body, whereby the first layer, which is situated directly on the supporting body, has a nitrogen oxide storage function and the second layer, which is in direct contact with the exhaust gas, has a catalytic function. The second functional layer additionally has a hydrocarbon-storage function and its catalytic function is provided by catalytically active noble metals of the platinum group which are deposited in highly dispersed form on finely divided, acidic carrier materials. Nitrogen oxides in the oxygen-rich exhaust gas of a diesel engine can be converted with optimal utilization of the reductive constituents contained in the exhaust gas. For this purpose, no reducing agents going beyond the reductive components (carbon monoxide and hydrocarbons) which are contained as a consequence of incomplete combustion need to be added to the exhaust gas.Type: GrantFiled: November 18, 1999Date of Patent: January 13, 2004Assignee: Degussa-Huls AktiengesellschaftInventors: Harald Klein, Wolfgang Strehlau, Egbert Lox, Thomas Kreuzer, Wilfried Müller
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Publication number: 20030235624Abstract: Pyrogenically prepared silica doped with silver or silver oxide is prepared by feeding an aerosol into a flame such as is used for the preparation of pyrogenic silica, mixing the aerosol homogeneously with gas mixture before the reaction, then allowing the aerosol/gas mixture to react in a flame. The resulting pyrogenic silicas doped with silver or silver oxide are separated from the gas stream. The pyrogenic silica doped with silver or silver oxide by means of an aerosol can be used as a bactericidal filler.Type: ApplicationFiled: June 19, 2002Publication date: December 25, 2003Applicant: Degussa-Huls AktiengesellschaftInventors: Helmut Mangold, Rainer Golchert
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Patent number: 6627257Abstract: A process for coating the flow channels in a monolithic, cylindrically shaped catalyst carrier with a coating dispersion, wherein the carrier has two end faces which are connected to each other by flow channels arranged parallel to the axis of the cylinder, by vertically aligning the axis of the cylindrical carrier, placing a predetermined amount of coating dispersion from a storage container on the upper end face of the carrier and drawing the dispersion through the flow channels under suction, removing excess coating dispersion from the flow channels by emptying the flow channels under suction, returning the excess dispersion to the storage container and fixing the dispersion coating by calcination. The coating dispersion is drawn through the flow channels under suction at a rate of flow of 0.Type: GrantFiled: August 19, 1999Date of Patent: September 30, 2003Assignee: Degussa-Huls AktiengesellschaftInventors: Martin Foerster, Josef Piroth, Ulrich Schlachter, Rainer Domesle, Willi Krampe
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Patent number: 6613545Abstract: This invention relates to isolated polynucleotides containing at least one of the polynucleotide sequences selected from the group a) polynucleotide which is at least 70% identical to a polynucleotide which codes for a polypeptide containing at least one amino acid sequence of SEQ ID no. 3 or 5, b) polynucleotide which codes for a polypeptide which contains an amino acid sequence which is at least 70% identical to the amino acid sequence of SEQ ID no. 3 or 5, c) polynucleotide which is complementary to the polynucleotides of a), b) or c), and d) polynucleotide containing at least 15 successive bases of the polynucleotide sequences of a), b) or c). wherein the polypeptides exhibit the biological activity of the enzymes for which the brnE or bernF (sic) gene codes and a process for the fermentative production of branched-chain L-amino acids with amplification of the stated genes.Type: GrantFiled: December 23, 1999Date of Patent: September 2, 2003Assignees: Degussa-Huls Aktiengesellschaft, Forschungszentrum Julich GmgHInventors: Nicole Kennerknecht, Hermann Sahm, Lothar Eggeling, Walter Pfefferle
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Patent number: 6602820Abstract: A method for producing a nitrogen oxide storage material that contains at least one storage component in the form of particles of an oxide, carbonate or hydroxide of the elements magnesium, strontium, barium, lanthanum and cerium on a carrier material from the group consisting of doped cerium oxide, cerium/zirconium mixed oxide and aluminum oxide or mixtures of these. The method is carried out by suspending the support material in an aqueous solution of precursors of the storage components, this suspension is then introduced into a hot gas stream, the temperature of which is calculated so that, during a residence time of the suspension in the hot gas stream of less than one minute, the solvent of the suspension is evaporated out and the precursors of the storage components are thermally broken down and converted to the storage components before the storage material that forms in this way is separated from the stream of hot gases.Type: GrantFiled: November 15, 2000Date of Patent: August 5, 2003Assignee: Degussa-Huls AktiengesellschaftInventors: Ulrich Göbel, Lutz Marc Ruwisch, Ralph Kiessling, Martin Foerster
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Patent number: 6562607Abstract: This invention relates to a genetically modified coryneform bacterium, the cls gene of which is amplified, and to an isolated polynucleotide, which codes for cardiolipin synthase from coryneform bacteria and to a process for the fermentative production of L-amino acids with amplification of the cls gene in the bacteria and to the use of the polynucleotide as a primer or hybridization probe.Type: GrantFiled: May 4, 2001Date of Patent: May 13, 2003Assignees: Degussa-Huls Aktiengesellschaft, Forschungszentrum Julich GmbHInventors: Madhavan Nampoothiri K., Bettina Möckel, Walter Pfefferle, Lothar Eggeling, Hermann Sahm
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Patent number: 6534439Abstract: A catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres which contains iridium on a support material. Silicon dioxide or a dealuminized zeolite in the acid H form with a modulus of more than 20, preferably more than 100, or mixtures thereof are used as support materials. Iridium is deposited on the external surfaces of these support materials with average particle sizes between 10 and 30 nm. The catalyst is particularly suitable for treating exhaust gases from lean-burn gasoline engines or from diesel engines.Type: GrantFiled: July 1, 1999Date of Patent: March 18, 2003Assignee: Degussa-Huls AktiengesellschaftInventors: Hans van den Tillaart, Jürgen Leyrer, Wolfgang Strehlau, Egbert Lox, Thomas Kreuzer, Carsten Plog, Renato Andorf, Norbert Markert, Thomas Stengel
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Patent number: 6516611Abstract: A process for removing soot from the exhaust gas of a diesel engine by oxidizing the nitrogen monoxide present in the exhaust gas to nitrogen dioxide, separating the soot from the exhaust gas stream and oxidizing the soot using the nitrogen dioxide produced. The process is performed in at least two consecutive process stages and the soot is separated from the exhaust gas stream with an efficiency W between 0.05 and 0.95 in each process stage, wherein each process stage can be assigned a transmission for soot in accordance with T=1−W and the total transmission of the process for soot is given as the product of the transmissions of all the process stages.Type: GrantFiled: May 22, 2000Date of Patent: February 11, 2003Assignee: Degussa-Huls AktiengesellschaftInventors: Adolf Schäfer-Sindlinger, Wolfgang Strehlau, Egbert Lox, Thomas Kreuzer, Ulrich Göbel
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Publication number: 20030022320Abstract: The invention relates to an isolated polynucleotide containing a polynucleotide sequence selected from the group comprising:Type: ApplicationFiled: July 18, 2002Publication date: January 30, 2003Applicant: Degussa-Huls AktiengesellschaftInventors: Bettina Mockel, Walter Pfefferle
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Patent number: 6500217Abstract: A process is disclosed for applying electrode layers to a polymer electrolyte membrane strip in a desired pattern, wherein the front and back of the membrane are continuously printed with the electrode layers in the desired pattern using an ink containing an electrocatalyst, and the printed electrode layers are dried at elevated temperature immediately after the printing operation, the printing taking place while maintaining accurate positioning of the patterns of the electrode layers on the front and back in relation to one another.Type: GrantFiled: June 28, 1999Date of Patent: December 31, 2002Assignee: Degussa-Huls AktiengesellschaftInventors: Karl-Anton Starz, Ralf Zuber, Wolfgang Göttenauer, Knut Fehl, Manfred Diehl
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Patent number: 6492541Abstract: The present invention relates to a process for the preparation of &ggr;-lactams of the general formula I The invention relates also to novel advantageous intermediates of the general formulae V, IV and II and their salts and their use. The compounds of the general formula I are obtained by cyclising compounds of the general formula II which can be prepared from the intermediate compounds V.Type: GrantFiled: December 7, 2001Date of Patent: December 10, 2002Assignee: Degussa-Huls AktiengesellschaftInventors: Karlheinz Drauz, Günter Knaup, Michael Schwarm
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Patent number: 6471932Abstract: A process is disclosed for the plasma-catalytic production of ammonia. A gas stream containing nitrogen and water vapor is passed through an electrical gas discharge in the discharge space of which is arranged a catalyst which contains a catalytically active component of at least one metal which can be titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, iron, ruthenium, osmium, cobalt, rhodium, iridium, nickel, palladium, platinum, manganese or copper on a support.Type: GrantFiled: October 23, 2000Date of Patent: October 29, 2002Assignee: Degussa-Huls AktiengesellschaftInventors: Jürgen Gieshoff, Jürgen Lang
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Patent number: 6465025Abstract: The invention relates to aqueous L-lysine-containing animal feed supplements, which optionally contain inactivated microorganisms from fermentation and have a pH value greater than 4 and less than 5 and to a process for producing this preparation.Type: GrantFiled: December 27, 2001Date of Patent: October 15, 2002Assignee: Degussa-Huls AktiengesellschaftInventors: Michael Binder, Klaus-Erich Uffmann
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Publication number: 20020137151Abstract: The invention provides nucleotide sequences encoding for the sod gene and a process for the fermentative preparation of nucleotides, vitamins and L-amino acids, in particular L-lysine, using coryneform bacteria in which the sod gene is amplified.Type: ApplicationFiled: March 28, 2001Publication date: September 26, 2002Applicant: Degussa-Huls AktiengesellschaftInventors: Muriel Merkamm, Armel Guyonvarch, Achim Marx
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Publication number: 20020086371Abstract: The invention relates to L-lysine-producing strains of corynebacteria with enhanced lysE gene (lysine export carrier gene), in which strains additional genes chosen from the group comprising the dapA gene (dihydrodipicolinate synthase gene), the lysC gene (aspartate kinase gene), the dapB gene (dihydrodipicolinate reductase gene) and the pyc gene, but especially the dapA gene and the lysC gene (aspartate kinase gene), are enhanced and, in particular, over-expressed, and to a process for the preparation of L-lysine.Type: ApplicationFiled: March 8, 2001Publication date: July 4, 2002Applicant: Degussa-Huls AktiengesellschaftInventors: Caroline Kreutzer, Stephan Hans, Mechthild Rieping, Bettina Mockel, Walter Pfefferle, Lothar Eggeling, Hermann Sahm, Miroslav Patek
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Patent number: 6413449Abstract: A catalyst is disclosed for the steam reforming of alcohols, which contains a palladium/zinc alloy and zinc oxide as catalytically active components. The alloy catalyst is a catalytically active component deposited on at least one support material which can be aluminum oxide, aluminum silicate, titanium oxide, zirconium oxide, zeoliths and mixtures or mixed oxides thereof.Type: GrantFiled: October 7, 1999Date of Patent: July 2, 2002Assignee: Degussa-Huls AktiengesellschaftInventors: Stefan Wieland, Frank Baumann, Frank Adam, Stefan Andersch