Patents by Inventor Philip B. Sweetser

Philip B. Sweetser 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 antidotes
    Patent number: 4645527
    Abstract: Compositions comprising a non-phytotoxic antidotal compound and an antidotable herbicide and the use of the compositions to protect crop plants from injury due to the herbicide.
    Type: Grant
    Filed: December 14, 1984
    Date of Patent: February 24, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Kofi S. Amuti, Philip B. Sweetser
  • Herbicide antidotes
    Patent number: 4343649
    Abstract: Cereal crops can be protected from damage caused by certain sulfonylurea herbicides by application of an antidotal compound selected from 1,8-naphthalic anhydride, .alpha.-(cyanomethoxyimino)benzacetonitrile, and N,N-diallyl-2,2-dichloroacetamide.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: August 10, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Philip B. Sweetser
  • Pyrazole plant growth regulants
    Patent number: 4055409
    Abstract: Substituted pyrazole compounds have been found to be effective plant growth regulants. Exemplary of the effective compounds are 3-(2-carboxyphenyl)-5-phenyl-pyrazole, its 2-ethanolamine salt, and 3-(2-carboxy-1-cyclohexen-1-yl)-5-phenylpyrazole.
    Type: Grant
    Filed: October 30, 1975
    Date of Patent: October 25, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Alexander L. Johnson, Philip B. Sweetser