Patents by Inventor Willis E. Cupery

Willis E. Cupery 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).

  • Growth retardants
    Patent number: 4191551
    Abstract: This invention relates to novel compositions containing a compound of formula I ##STR1## with a chelating agent capable of tying up essentially all of the calcium ion in aqueous spray water solution. These compositions are useful as plant growth regulants.
    Type: Grant
    Filed: May 25, 1978
    Date of Patent: March 4, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Willis E. Cupery