Patents by Inventor Judith Hierold

Judith Hierold 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).

  • Storage-stable form of 3-methylthiopropionaldehyde
    Patent number: 11524936
    Abstract: A chemical compound of formula (I), and specific compositions including 3-methylthiopropionaldehyde, 3-methylthiopropane-1,1-diol, a compound of formula I and water, and processes for producing same and also the use of same may be used for the production of 2-hydroxy-4-(methylthio)butyronitrile, methionine hydantoin, methionine. Protected forms may be used for the storage and/or transport of 3-methylthiopropionaldehyde.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: December 13, 2022
    Assignee: Evonik Operations GmbH
    Inventors: Judith Hierold, Andrea Kopp, Stephan Rautenberg, Christian Renner
  • METHOD FOR PRODUCING METHIONINE
    Publication number: 20220048855
    Abstract: The present invention pertains to a method for producing methionine or salts or derivatives thereof from hydrogen cyanide (HCN), the method comprising a step of producing 2-hydroxy-4-(methylthio)butyronitrile (MMP-CN), or a crude product mixture comprising MMP-CN, by contacting a hydrogen cyanide (HCN) process gas mixture prepared according to the Andrussow process from methane, ammonia and oxygen, with 3-methylmercaptopropionaldehyde (MMP), wherein the HCN process gas mixture is obtained from the crude HCN process gas mixture by adjusting the amount of ammonia to between 20% (v/v) and 60% (v/v) of the amount of the ammonia in the crude HCN process gas mixture.
    Type: Application
    Filed: December 13, 2019
    Publication date: February 17, 2022
    Applicant: EVONIK OPERATIONS GMBH
    Inventors: Daniel SUDHOFF, Judith HIEROLD, Philipp ROTH, Imad MOUSSALLEM, Ulf BINDERNAGEL, Christian RENNER
  • STORAGE-STABLE FORM OF 3-METHYLTHIOPROPIONALDEHYDE
    Publication number: 20210347732
    Abstract: A chemical compound of formula (I), and specific compositions including 3-methylthiopropionaldehyde, 3-methylthiopropane-1,1-diol, a compound of formula I and water, and processes for producing same and also the use of same may be used for the production of 2-hydroxy-4-(methylthio)butyronitrile, methionine hydantoin, methionine. Protected forms may be used for the storage and/or transport of 3-methylthiopropionaldehyde.
    Type: Application
    Filed: November 21, 2019
    Publication date: November 11, 2021
    Applicant: Evonik Operations GmbH
    Inventors: Judith HIEROLD, Andrea KOPP, Stephan RAUTENBERG, Christian RENNER
  • Method for preparing 3-methylthiopropionaldehyde
    Patent number: 11014878
    Abstract: The present invention relates to a method for preparing 3-methylthiopropionaldehyde by reacting methyl mercaptan with acrolein, in which deviations in the stoichiometry of methyl mercaptan to acrolein in the reaction to give 3-methylthiopropionaldehyde are compensated for by supplying or by forming 1,3-bis(methylthio)-1-propanol, and also to the use of 1,3-bis(methylthio)-1-propanol as a storage form of methyl mercaptan and/or 3-methylthiopropionaldehyde.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: May 25, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Stephan Rautenberg, Sascha Ceylan, Martin Koerfer, Judith Hierold, Harald Jakob, Christian Kaiser, Rainer Malzkorn, Thorsten Merker, Anja Nordschild
  • Method for preparing methionine
    Patent number: 10899706
    Abstract: The present invention relates to a method for preparing methionine or methionine salts. In particular, the invention describes the step of preparing 2-hydroxy-4-(methylthio)butyronitrile (MMP-CN) from 3-methylthiopropanal (MMP) and hydrogen cyanide (HCN) in the presence of ammonia by bringing a gaseous mixture comprising HCN and ammonia into contact with MMP.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: January 26, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Judith Hierold, Daniel Sudhoff, Martin Steurenthaler, Hans Joachim Hasselbach, Philipp Roth, Thorsten Merker, Markus Held, Daniel Fischer, Christian Kaiser
  • METHOD FOR PREPARING 3-METHYLTHIOPROPIONALDEHYDE
    Publication number: 20200299232
    Abstract: The present invention relates to a method for preparing 3-methylthiopropionaldehyde by reacting methyl mercaptan with acrolein, in which deviations in the stoichiometry of methyl mercaptan to acrolein in the reaction to give 3-methylthiopropionaldehyde are compensated for by supplying or by forming 1,3-bis(methylthio)-1-propanol, and also to the use of 1,3-bis(methylthio)-1-propanol as a storage form of methyl mercaptan and/or 3-methylthiopropionaldehyde.
    Type: Application
    Filed: March 14, 2017
    Publication date: September 24, 2020
    Inventors: Stephan RAUTENBERG, Sascha CEYLAN, Martin KOERFER, Judith HIEROLD, Harald JAKOB, Christian KAISER, Rainer MALZKORN, Thorsten MERKER, Anja NORDSCHILD
  • Storage of 3-methylthiopropionaldehyde and methyl mercaptan
    Patent number: 10633335
    Abstract: A compound, which is 1-(1,3-bis(methylthio)propoxy)-3-(methylthio)propan-1-ol, a composition containing the compound, a method for the preparation thereof, a method for preparing 3-methylthiopropionaldehyde by reacting 1-(1,3-bis(methylthio)propoxy)-3-(methylthio)propan-1-ol with acrolein, and also to the use of 1-(1,3-bis(methylthio)propoxy)-3-(methylthio)propan-1-ol or compositions containing the compound for the storage and/or transport of 3-methylthiopropionaldehyde and/or methyl mercaptan.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: April 28, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Judith Hierold, Sascha Ceylan, Stephan Rautenberg, Harald Jakob, Christian Kaiser, Andrea Kopp, Lucas Geist
  • METHOD FOR PREPARING METHIONINE
    Publication number: 20200115334
    Abstract: The present invention relates to a method for preparing methionine or methionine salts. In particular, the invention describes the step of preparing 2-hydroxy-4-(methylthio)butyronitrile (MMP-CN) from 3-methylthiopropanal (MMP) and hydrogen cyanide (HCN) in the presence of ammonia by bringing a gaseous mixture comprising HCN and ammonia into contact with MMP.
    Type: Application
    Filed: December 15, 2017
    Publication date: April 16, 2020
    Applicant: Evonik Degussa GmbH
    Inventors: Judith HIEROLD, Daniel SUDHOFF, Martin STEURENTHALER, Hans Joachim HASSELBACH, Philipp ROTH, Thorsten MERKER, Markus HELD, Daniel FISCHER, Christian KAISER
  • STORAGE OF 3-METHYLTHIOPROPIONALDEHYDE AND METHYL MERCAPTAN
    Publication number: 20180179155
    Abstract: A compound, which is 1-(1,3-bis(methylthio)propoxy)-3-(methylthio)propan-1-ol, a composition containing the compound, a method for the preparation thereof, a method for preparing 3-methylthiopropionaldehyde by reacting 1-(1,3-bis(methylthio)propoxy)-3-(methylthio)propan-1-ol with acrolein, and also to the use of 1-(1,3-bis(methylthio)propoxy)-3-(methylthio)propan-1-ol or compositions containing the compound for the storage and/or transport of 3-methylthiopropionaldehyde and/or methyl mercaptan.
    Type: Application
    Filed: December 21, 2017
    Publication date: June 28, 2018
    Applicant: Evonk Degussa GmbH
    Inventors: Judith Hierold, Sascha Ceylan, Stephan Rautenberg, Harald Jakob, Christian Kaiser, Andrea Kopp, Lucas Geist