Patents by Inventor Martin Eipert

Martin Eipert 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 quaternary N-alkyl morphin or morphinan alkaloid derivatives
    Patent number: 8101756
    Abstract: The present invention relates to a process for the preparation of quaternary N-alkyl morphin or morphinan alkaloid derivatives. This is achieved by using a nucleophilic nitrogen, phosphor or sulfur containing base in the reaction mixture.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: January 24, 2012
    Assignee: Siegfried Ltd.
    Inventors: Martin Eipert, Erik Heinz Lauterbach, Sabrina Heller, Thomas Dinkel, Stephanie Hake
  • Process for the preparation of quaternary N-alkyl morphin or morphinan alkaloid derivatives
    Publication number: 20090054651
    Abstract: The present invention relates to a process for the preparation of quaternary N-alkyl morphin or morphinan alkaloid derivatives. This is achieved by using a nucleophilic nitrogen, phosphor or sulfur containing base in the reaction mixture.
    Type: Application
    Filed: July 18, 2008
    Publication date: February 26, 2009
    Inventors: Martin Eipert, Erik Heinz Lauterbach, Sabrina Heller, Thomas Dinkel, Stephanie Hake