Patents by Inventor Ralf Steffen Weingart

Ralf Steffen Weingart 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 optically pure active compounds
    Patent number: 7452998
    Abstract: The invention relates to a novel process for preparing an optically pure PPI having a sulfinyl structure using a chiral zirconium complex or a chiral hafnium complex.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: November 18, 2008
    Assignee: Nycomed GmbH
    Inventors: Bernhard Kohl, Bernd Müller, Ralf Steffen Weingart
  • Process for preparing (S)-pantoprazole
    Patent number: 7301030
    Abstract: The invention relates to a novel process for preparing (S)-pantoprazole using a chiral zirconium complex or a chiral hafnium complex.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: November 27, 2007
    Assignee: Nycomed GmbH
    Inventors: Bernhard Kohl, Bernd Müller, Ralf Steffen Weingart