Patents by Inventor Michael G. Hoffmann

Michael G. Hoffmann 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).

  • 4-trifluoromethylpyrazolyl-substituted pyridines and pyrimidines
    Patent number: 7211673
    Abstract: A description is given of 4-trifluoromethylpyrazolyl-substituted pyridines and pyrimidines of formula (I) and of their use as herbicides. In this formula (I) R1, R2, R3 and R4 are various radicals, A is an aromatic or heteroaromatic radical, and Z is a nitrogen or carbon atom.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: May 1, 2007
    Assignee: Bayer CropScience GmbH
    Inventors: Michael G. Hoffmann, Hendrik Helmke, Lothar Willms, Thomas Auler, Hermann Bieringer, Hubert Menne