Patents by Inventor Joseph E. Drumm

Joseph E. Drumm 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).

  • Substituted pyridine herbicides
    Patent number: 5438033
    Abstract: This invention relates to certain herbicidal pyridine compounds, agriculturally suitable compositions and a method of use of herbicidal pyridine compounds.
    Type: Grant
    Filed: December 9, 1993
    Date of Patent: August 1, 1995
    Assignee: E. I. duPont de Nemours and Company
    Inventors: Joseph E. Drumm, Renee M. Lett, Dennis R. Rayner, Morris P. Rorer, Chi-Ping Tseng