Patents by Inventor Aaron Waddington Welch

Aaron Waddington Welch 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).

  • Selective herbicide for evergreen seedlings
    Patent number: 4060405
    Abstract: 1-Methyl-3-cyclohexyl-6-dimethylamino-s-triazine-2,4(1H,3H)-dione ##STR1## is useful for the selective control of many grassy weeds, broadleaved weeds, and weed trees in evergreen seedling stands.
    Type: Grant
    Filed: August 26, 1975
    Date of Patent: November 29, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Aaron Waddington Welch