Patents by Inventor Eric M. Hewlett

Eric M. Hewlett 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).

  • Compositions and methods for controlling nematodes
    Patent number: 5595748
    Abstract: The subject invention concerns pest-control compositions and advantageous methods of using these compositions. More specifically, this invention relates to the use of tannins (tannic acid and other analogues, congeners, derivatives, or salts of tannic acid) to control plant-parasitic nematodes. Tannins can be used as nematicides or as nematode-attractants.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: January 21, 1997
    Inventors: Eric M. Hewlett, Thomas E. Hewlett