Patents by Inventor Stephan Doswald

Stephan Doswald 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).

  • Asymmetric reduction of 1,1,1-trifluoroacetone
    Patent number: 7196234
    Abstract: The invention relates to a scalable biocatalytic process for the preparation of S-1,1,1-trifluoro-2-propanol with a enantiomeric excess of >99% by asymmetric microbial reduction of 1,1,1-trifluoroacetone with Baker's yeast.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: March 27, 2007
    Assignee: Hoffman-La Roche Inc.
    Inventors: Stephan Doswald, Steven Paul Hanlon, Ernst Kupfer
  • Asymmetric reduction of 1,1,1-trifluoroacetone
    Publication number: 20070009999
    Abstract: The invention relates to a scalable biocatalytic process for the preparation of S-1,1,1,-trifluoro-2-propanol with a enantiomeric excess of >99% by asymmetric microbial reduction of 1,1,1 -trifluoroacetone with Baker's yeast.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 11, 2007
    Inventors: Stephan Doswald, Steven Hanlon, Ernst Kupfer
  • Purification of lipstatin
    Patent number: 6156911
    Abstract: The present invention relates to a method for the purification of the lipstatin.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: December 5, 2000
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Stephan Doswald, Ernst Kupfer, Gerhard Steinbauer, Erich Steinwender