Patents by Inventor Klaus Weidemann

Klaus Weidemann 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 preparing pradofloxacin
    Patent number: 8497377
    Abstract: The invention relates to an improved process for preparing pradofloxacin, in which the substituent in the 7 position is introduced by nucleophilic substitution in an N-methylpyrrolidone-ethanol solvent mixture.
    Type: Grant
    Filed: October 7, 2007
    Date of Patent: July 30, 2013
    Assignee: Bayer Intellectual Property GmbH
    Inventors: Thomas Adam, Ralf Wischnat, Klaus Weidemann
  • METHOD FOR CARBOXYLIZING AROMATES AND HETETOAROMATES USING CO2
    Publication number: 20120323019
    Abstract: The present invention relates to a process for the preparation of aromatic and heteroaromatic carboxylic acids using CO2.
    Type: Application
    Filed: December 17, 2010
    Publication date: December 20, 2012
    Applicant: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Christian Severins, Sigurd Buchholz, Kilian Tellman, Jürgen Wieschemeyer, Klaus Weidemann
  • PROCESS FOR PREPARING PRADOFLOXACIN
    Publication number: 20090318700
    Abstract: The invention relates to an improved process for preparing pradofloxacin, in which the substituent in the 7 position is introduced by nucleophilic substitution in an N-methylpyrrolidone-ethanol solvent mixture.
    Type: Application
    Filed: October 7, 2007
    Publication date: December 24, 2009
    Inventors: Thomas Adam, Ralf Wischnat, Klaus Weidemann