Patents by Inventor Klaus-Ulrich SCHIFFER

Klaus-Ulrich SCHIFFER 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).

  • PROCESS OF PREPARING 2-(PHENYLIMINO)-3-ALKYL-1,3-THIAZOLIDIN-4-ONES
    Publication number: 20230105595
    Abstract: The present invention relates to a method for preparing 2-(phenylimino)-3-alkyl-1,3-thiazolidin-4-ones of the general formula (I) in which Y1, Y2, R1, R2 and R3 are as defined in the description.
    Type: Application
    Filed: February 15, 2021
    Publication date: April 6, 2023
    Inventors: Thomas HIMMLER, Sergii PAZENOK, Julia Johanna HAHN, Klaus-Ulrich SCHIFFER
  • Method for preparing methyl 4-[(4,5-dihydro-3-methoxy-4-methyl-5-oxo-1H-1,2,4-triazol-1-yl)carbonyl)sulfamoyl]-5-methylthiophene-3-carboxylate
    Patent number: 10906893
    Abstract: The invention relates to a method for preparing methyl 4-[(4,5-dihydro-3-methoxy-4-methyl-5-oxo-1H-1,2,4-triazol-1-yl)carbonyl)sulfamoyl]-5-methylthiophene-3-carboxylate from 4-methoxycarbonyl-2-methylthiophene-3-sulfonyl chloride in the presence of an imidazole base substituted in the 1-position or in the presence of a mixture of bases comprising an imidazole base substituted in the 1-position (N-alkylimidazole).
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: February 2, 2021
    Assignees: Bayer CropScience Aktiengesellschaft, Bayer Aktiengesellschaft
    Inventors: Sergii Pazenok, Christian Funke, Friedrich August Muehlthau, Mark James Ford, Arnd Neeff, Klaus-Ulrich Schiffer
  • METHOD FOR PREPARING METHYL 4-[(4,5-DIHYDRO-3-METHOXY-4-METHYL-5-OXO-1H-1,2,4-TRIAZOL-1-YL)CARBONYL)SULFAMOYL]-5-METHYLTHIOPHENE-3-CARBOXYLATE
    Publication number: 20200048234
    Abstract: The invention relates to a method for preparing methyl 4-[(4,5-dihydro-3-methoxy-4-methyl-5-oxo-1H-1,2,4-triazol-1-yl)carbonyl)sulfamoyl]-5-methylthiophene-3-carboxylate from 4-methoxycarbonyl-2-methylthiophene-3-sulfonyl chloride in the presence of an imidazole base substituted in the 1-position or in the presence of a mixture of bases comprising an imidazole base substituted in the 1-position (N-alkylimidazole).
    Type: Application
    Filed: February 15, 2018
    Publication date: February 13, 2020
    Inventors: Sergii PAZENOK, Christian FUNKE, Friedrich August MUEHLTHAU, Mark James FORD, Arnd NEEFF, Klaus-Ulrich SCHIFFER