Patents by Inventor Thomas Kohnen

Thomas Kohnen 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).

  • Preparation and use of (3-alkoxy-phenyl) magnesium chlorides
    Patent number: 5852216
    Abstract: A method of preparing (3-alkoxyphenyl)magnesium chlorides and the use thereof for reaction with certain carbonyl compounds are described.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: December 22, 1998
    Assignee: Gruenenthal GmbH
    Inventors: Michael Finkam, Thomas Kohnen, Werner Winter