Patents by Inventor Robert C. Ackerson

Robert C. Ackerson 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).

  • Herbicides for weed control in rice
    Patent number: 5017215
    Abstract: This invention relates to a composition comprising a mixture of herbicidal compounds and a method for controlling the growth of undesired vegetation in upland cereal and rice crops by applying to the crop after transplantation or emergence an effective amount of certain sulfonylurea herbicides, alone or the above composition comprising a mixture of herbicidal compounds.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: May 21, 1991
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Robert C. Ackerson, Takeshi Yuyama
  • Selective method-of-use of oxabicycloalkanes
    Patent number: 4798621
    Abstract: This invention relates to a method for controlling the growth of undesired vegetation in paddy rice crops by applying an effective amount of an oxabicycloalkane herbicidal compound to the locus of paddy rice.
    Type: Grant
    Filed: August 31, 1987
    Date of Patent: January 17, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert C. Ackerson, Takeshi Yuyama