Patents by Inventor Emil W. Shen

Emil W. Shen 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).

  • Herbicidal composition
    Patent number: 4979979
    Abstract: A granular particulate herbicidal composition having characteristics that permit it to be effectively applied to the ground aerially.
    Type: Grant
    Filed: May 16, 1989
    Date of Patent: December 25, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William A. McCollum, III., Emil W. Shen, Robert D. Wysong