Patents by Inventor Klaus Huthmacher

Klaus Huthmacher 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).

  • Patent number: 9464045
    Abstract: This disclosure relates to a process for preparing D,L-methionine by feeding carbon dioxide to an aqueous potassium methioninate solution obtained by hydrolysis of 5-(2-methylmercaptoethyl)hydantoin, in order to precipitate out crude methionine, which is separated off and purified. In this process an aqueous solution of the separated-off crude methionine is purified by recrystallization from a solution containing potassium ions and also a crystallization additive. The crystallization additive is a nonionic or anionic surfactant, or a mixture of different nonionic or anionic surfactants. The recrystallization occurs by introducing a 60 to 110° C.-hot methionine solution into a 35 to 80° C.-warm methionine suspension, a temperature of which is lower than that of the introduced solution, such that the temperature of the methionine suspension being maintained between 35 and 80° C. during the addition. The crystallization additive is a sorbitan fatty acid ester or a mixture of different sorbitan fatty acid esters.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: October 11, 2016
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Martin Koerfer, Hans Joachim Hasselbach, Stefan Reichert, Harald Jakob, Christoph Weckbecker, Klaus Huthmacher, Horst Krull, Bernd Drapal, Rainer Peter
  • Patent number: 9409153
    Abstract: This invention is related to a preparation method of a supported catalyst Mo—O—K-MexOy for the synthesis of methanethiol from H2S-containing syngas. The catalyst comprises of an active component of Mo—O—K-based species, an active promoter and a support denoted as metal (or metals)-carrier. The support is prepared by electroless plating method in such a way that the metal or metals chosen are plated onto the surface of the carrier. Transition metal, especially Fe, Co or Ni are selected to be the plating metal, while SiO2, Al2O3 or TiO2 are selected to be carrier. The catalyst thus prepared is found to be efficient for the synthesis of methanethiol from H2S-containing syngasor carbon oxides/hydrogen mixtures, especially regarding a minor formation of the by-product CO2.
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: August 9, 2016
    Assignee: EVONIK DEGUSSA GMBH
    Inventors: Yiquan Yang, Yingjuan Hao, Aiping Chen, Qi Wang, Lingmei Yang, Qiaoling Li, Shenjun Dai, Weiping Fang, Jan-Olaf Barth, Christoph Weckbecker, Klaus Huthmacher
  • Publication number: 20160068480
    Abstract: This disclosure relates to a process for preparing D,L-methionine by feeding carbon dioxide to an aqueous potassium methioninate solution obtained by hydrolysis of 5-(2-methylmercaptoethyl)hydantoin, in order to precipitate out crude methionine, which is separated off and purified. In this process an aqueous solution of the separated-off crude methionine is purified by recrystallization from a solution containing potassium ions and also a crystallization additive. The crystallization additive is a nonionic or anionic surfactant, or a mixture of different nonionic or anionic surfactants. The recrystallization occurs by introducing a 60 to 110° C.-hot methionine solution into a 35 to 80° C.-warm methionine suspension, a temperature of which is lower than that of the introduced solution, such that the temperature of the methionine suspension being maintained between 35 and 80° C. during the addition. The crystallization additive is a sorbitan fatty acid ester or a mixture of different sorbitan fatty acid esters.
    Type: Application
    Filed: September 10, 2015
    Publication date: March 10, 2016
    Applicant: EVONIK INDUSTRIES AG
    Inventors: Martin KOERFER, Hans Joachim HASSELBACH, Stefan REICHERT, Harald JAKOB, Christoph WECKBECKER, Klaus HUTHMACHER, Horst KRULL, Bernd DRAPAL, Rainer PETER
  • Patent number: 9156782
    Abstract: The invention relates to a process for the preparation of D,L-methionine, in which carbon dioxide is fed to an aqueous potassium methioninate solution obtained by hydrolysis of 5-(2-methylmercaptoethyl)hydantoin, in order to precipitate out crude methionine, which is separated off and purified, where, for the purposes of purification, an aqueous solution of the separated-off crude methionine is prepared and subjected to a recrystallization, characterized in that the solution from which the recrystallization takes place contains potassium ions and also a crystallization additive, where the crystallization additive is a nonionic or anionic surfactant, or a mixture of different nonionic or anionic surfactants, and that the recrystallization takes place by introducing a 60 to 110° C.-hot methionine solution into a 35 to 80° C.-warm methionine suspension, the temperature of which is lower than that of the introduced solution, the temperature of the methionine suspension being maintained between 35 and 80° C.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: October 13, 2015
    Assignee: EVONIK INDUSTRIES AG
    Inventors: Martin Koerfer, Hans Joachim Hasselbach, Stefan Reichert, Harald Jakob, Christoph Weckbecker, Klaus Huthmacher, Horst Krull, Bernd Drapal, Rainer Peter
  • Publication number: 20150051421
    Abstract: The invention relates to a process for the preparation of D,L-methionine, in which carbon dioxide is fed to an aqueous potassium methioninate solution obtained by hydrolysis of 5-(2-methylmercaptoethyl)hydantoin, in order to precipitate out crude methionine, which is separated off and purified, where, for the purposes of purification, an aqueous solution of the separated-off crude methionine is prepared and subjected to a recrystallization, characterized in that the solution from which the recrystallization takes place contains potassium ions and also a crystallization additive, where the crystallization additive is a nonionic or anionic surfactant, or a mixture of different nonionic or anionic surfactants, and that the recrystallization takes place by introducing a 60 to 110° C.-hot methionine solution into a 35 to 80° C.-warm methionine suspension, the temperature of which is lower than that of the introduced solution, the temperature of the methionine suspension being maintained between 35 and 80° C.
    Type: Application
    Filed: February 26, 2013
    Publication date: February 19, 2015
    Applicant: EVONIK INDUSTRIES AG
    Inventors: Martin Koerfer, Hans Joachim Hasselbach, Stefan Reichert, Harald Jakob, Christoph Weckbecker, Klaus Huthmacher, Horst Krull, Bernd Drapal, Rainer Peter
  • Patent number: 8883670
    Abstract: A method is described to prepare a Mo containing supported catalyst comprising TeO2 as active promoter and a process for preparing methanethiol in the presence of said catalyst.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: November 11, 2014
    Assignee: Evonik Degussa GmbH
    Inventors: Yiquan Yang, Aiping Chen, Qi Wang, Jan-Olaf Barth, Christoph Weckbecker, Klaus Huthmacher
  • Patent number: 8772551
    Abstract: Disclosed herein are mixed oxide catalysts for the catalytic gas phase oxidation of alkanes, or mixtures of alkanes and olefins, for the production of aldehydes and carboxylic acids with air or oxygen in the presence of inert gases at elevated temperatures and pressure, and a method for the production of catalysts.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: July 8, 2014
    Assignee: Evonik Degussa GmbH
    Inventors: Achim Fischer, Weimin Lu, Christoph Weckbecker, Klaus Huthmacher
  • Patent number: 8609576
    Abstract: The invention relates to a catalyst containing alkali tungstate for the synthesis of alkylmercaptanes from alkanols and hydrogen sulphide, in addition to a method for the production of said catalyst, wherein the molar ratio of alkali to tungstan is <2:1.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: December 17, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Hubert Redlingshoefer, Christoph Weckbecker, Klaus Huthmacher
  • Patent number: 8372780
    Abstract: The invention relates to a catalyst containing alkali tungstate for the synthesis of alkylmercaptanes from alkanols and hydrogen sulphide, in addition to a method for the production of said catalyst, wherein the molar ratio of alkali to tungsten is <2:1.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: February 12, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Hubert Redlingshofer, Christoph Weckbecker, Klaus Huthmacher
  • Publication number: 20120283088
    Abstract: The invention relates to mixed oxide catalysts made of hollow shapes for the catalytic gas phase oxidation of olefins, and to a method for producing the catalysts by applying them as a layer to a carrier made of organic material and removing said organic material. The reaction into aldehydes and carboxylic acids occurs by air or oxygen in the presence of inert gases in different quantity ratios, at elevated temperatures and pressure in the presence of said catalysts.
    Type: Application
    Filed: June 8, 2012
    Publication date: November 8, 2012
    Applicant: Evonik Degussa Gmbh
    Inventors: Achim FISCHER, Werner BURKHARDT, Stefan RÖDER, Klaus HUTHMACHER
  • Publication number: 20120277095
    Abstract: The invention relates to a catalyst containing alkali tungstate for the synthesis of alkylmercaptanes from alkanols and hydrogen sulphide, in addition to a method for the production of said catalyst, wherein the molar ratio of alkali to tungstan is <2:1.
    Type: Application
    Filed: July 11, 2012
    Publication date: November 1, 2012
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Hubert REDLINGSHOEFER, Christoph WECKBECKER, Klaus HUTHMACHER
  • Patent number: 8299293
    Abstract: A method for preparing ?-keto acids, especially ?-ketomethionine, and/or derivatives thereof, whereby an aldehyde is reacted with thiols to give a corresponding dithioacetal, the dithioacetal formed, is reacted with an electrophile in the presence of a strong base, and the resulting ?,?-(dithio)carboxylic acid is solvolyzed with acid-catalysis to release thiol and give the ?-keto acid or a derivative thereof. Umpolung of aliphatic or aromatic aldehydes is effected by reaction with thiols.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: October 30, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Christoph Kobler, Martin Hateley, Philipp Roth, Barbara Jaeger, Christoph Weckbecker, Klaus Huthmacher
  • Patent number: 8222461
    Abstract: Disclosed herein are mixed oxide catalysts for the catalytic gas phase oxidation of alkanes, or mixtures of alkanes and olefins, for the production of aldehydes and carboxylic acids with air or oxygen in the presence of inert gases at elevated temperatures and pressures, and methods for the production of the catalyst.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: July 17, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Achim Fischer, Weimin Lu, Christoph Weckbecker, Klaus Huthmacher
  • Patent number: 8158186
    Abstract: A chemical compound of the general formula I or II is useful as feed additive: wherein X=O or NR, and R=H, C1-C6-alkyl (optionally branched), C3-C6-cycloalkyl, aryl, or aralkyl, and wherein R1, R2, are identical or different and in each case H, C1-C6-alkyl (optionally branched), C3-C6-cycloalkyl, allyl, aryl, or aralkyl; or R1 and R2 together are an C2- to C6-alkylene group (optionally C1-C6-alkyl substituted).
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: April 17, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Christoph Kobler, Philipp Roth, Christoph Weckbecker, Klaus Huthmacher
  • Patent number: 8057749
    Abstract: A device for carrying out exothermal chemical reactions wherein a gas phase is guided across a fixed bed and allowed to react, comprising a housing and an exchangeable unit wherein the reaction takes place.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: November 15, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Achim Fischer, Harald Heinzel, Christoph Weckbecker, Klaus Huthmacher
  • Publication number: 20110263415
    Abstract: Disclosed herein are mixed oxide catalysts for the catalytic gas phase oxidation of alkanes, or mixtures of alkanes and olefins, for the production of aldehydes and carboxylic acids with air or oxygen in the presence of inert gases at elevated temperatures and pressure, and a method for the production of catalysts.
    Type: Application
    Filed: July 6, 2011
    Publication date: October 27, 2011
    Inventors: Achim Fischer, Weimin Lu, Christoph Weckbecker, Klaus Huthmacher
  • Patent number: 8008530
    Abstract: The present invention relates to a process for continuously preparing methyl mercaptan from hydrogen sulphide and methanol in a direct connection with the preparation of hydrogen sulphide.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: August 30, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Hubert Redlingshöfer, Stephan Kretz, Caspar-Heinrich Finkeldei, Christoph Weckbecker, Wolfgang Böck, Klaus Huthmacher
  • Patent number: 8008227
    Abstract: The invention relates to mixed oxide catalysts for the catalytic gas-phase oxidation of olefins and methylated aromatics, processes for producing the catalysts and the reaction with air or oxygen in the presence of inert gases in various ratios at elevated temperatures and pressure to form aldehydes and carboxylic acids.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: August 30, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Achim Fischer, Werner Burkhardt, Christoph Weckbecker, Klaus Huthmacher, Frank Wilz
  • Patent number: 7994366
    Abstract: Provided is a process for continuously preparing methyl mercaptan by reacting a reactant mixture comprising solid, liquid and/or gaseous carbon- and/or hydrogen-containing compounds with air or oxygen, and/or water and sulfur.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: August 9, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Jan-Olaf Barth, Hubert Redlingshoefer, Caspar-Heinrich Finkeldei, Christoph Weckbecker, Klaus Huthmacher
  • Patent number: 7943359
    Abstract: Disclosed herein are cyanide-tolerant nitrile hydratases especially from Pseudomonas putida or Pseudomonas marginalis strains which exhibit increased cyanide tolerance. Also disclosed are methods of preparing amides from nitriles in the presence of cyanides and polynucleotide sequences coding for cyanide-tolerant nitrile hydratases.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: May 17, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Steffen Osswald, Christoph Weckbecker, Klaus Huthmacher, Tatijana Gerasimova, Andrey Novikov, Ludmila Ryabchenko, Alexander Yanenko, Ksenia Egorova