Patents by Inventor Ludwig Gantzert

Ludwig Gantzert 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 for the preparation of nicotinaldehydes
    Patent number: 7528256
    Abstract: The invention relates to a process for the preparation of nicotinaldehydes by reduction of the corresponding nicotinic acid morpholinamides.
    Type: Grant
    Filed: March 27, 2004
    Date of Patent: May 5, 2009
    Assignee: Merck Patent GmbH
    Inventors: Heinz-Hermann Bokel, Mike Brandner, Ludwig Gantzert, Ralf Knierieme
  • Process for the preparation of nicotinaldehydes
    Publication number: 20060199965
    Abstract: The invention relates to a process for the preparation of nicotinaldehydes by reduction of the corresponding nicotinic acid morpholinamides.
    Type: Application
    Filed: March 27, 2004
    Publication date: September 7, 2006
    Inventors: Heinz-Hermann Bokel, Mike Brandner, Ludwig Gantzert, Ralf Knierieme
  • Method for producing-2[-5-(4-fluorophenyl)-3-pyridylmethylaminomethyl]-chromane
    Patent number: 7045629
    Abstract: The present invention relates to a process for the preparation of 2-[5-(4-fluorophenyl)-3-pyridylmethylaminomethyl]chroman, the enantiomers and its salts, characterised in that 5-(4-fluorophenyl)pyridine-3-carbaldehyde is reacted directly with aminomethylchroman or its salts under reducing conditions to give 2-[5-(4-fluorophenyl)-3-pyridylmethylaminomethyl]chroman, and the latter is, if desired, converted into one of its physiologically acceptable salts by treatment with an acid.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: May 16, 2006
    Assignee: Merck Patent GmbH
    Inventors: Heinz-Hermann Bokel, Steffen Neuenfeld, Ludwig Gantzert, Ralf Knierieme, Elke Simon, Ralf Devant, Udo Helm, Helmut Reubold
  • Method for producing-2[-5-(4-fluorophenyl)-3-pyridylmethylaminomethyl]-chromane
    Publication number: 20040138266
    Abstract: The present invention relates to a process for the preparation of 2-[5-(4-fluorophenyl)-3-pyridylmethylaminomethyl]chroman, the enantiomers and its salts, characterised in that 5-(4-fluorophenyl)pyridine-3-carbaldehyde is reacted directly with aminomethylchroman or its salts under reducing conditions to give 2-[5-(4-fluorophenyl)-3-pyridylmethylaminomethyl]chroman, and the latter is, if desired, converted into one of its physiologically acceptable salts by treatment with an acid.
    Type: Application
    Filed: October 27, 2003
    Publication date: July 15, 2004
    Inventors: Heinz-Hermann Bokel, Steffen Neuenfeld, Ludwig Gantzert, Ralf Knierieme, Elke Simon, Ralf Devant, Udo Helm, Helmut Reubold