Patents by Inventor Conny Wenz

Conny Wenz 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).

  • Method for producing atropic acid ethyl ester
    Patent number: 6509493
    Abstract: A process for preparing ethyl atropate by reacting ethyl phenylacetate with paraformaldehyde in the presence of a base is described and entails employing as ethyl phenylacetate a product which contains not more than 0.03% of the corresponding methyl phenylacetate, and carrying out the reaction in N-methyl-pyrrolidone or N,N-dimethylformamide.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: January 21, 2003
    Assignee: Knoll Aktiengesellschaft
    Inventors: Wolfgang Falkenberg, Marco Thyes, Conny Wenz, Ulrich Schneider