Patents by Inventor Ponnan Veerasekaran

Ponnan Veerasekaran 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 method comprising the use of diflufenican
    Patent number: 5264411
    Abstract: The present invention relates to a method of controlling the growth of weeds at a cereal crop locus which comprises applying to the locus (a) bromoxynil, which is 3,5-dibromo-4-hydroxybenzonitrile, or ioxynil, which is 4-hydroxy-3,5-diiodobenzonitrile, an agriculturally acceptable salt or ester thereof or a mixture thereof and (b) diflufenican which is N-(2,4-difluorophenyl)-2-(3-trifluoromethylphenoxy)nicotinamide.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: November 23, 1993
    Assignee: May & Baker Limited
    Inventors: Richard H. Hewett, Ponnan Veerasekaran
  • Herbicidal method using diflufenican
    Patent number: 5013353
    Abstract: The invention provides a method of controlling the growth of weeds using (a) a urea herbicide and (b) diflufenican; herbicidal compositions comprising (a) and (b) are described.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: May 7, 1991
    Assignee: May & Baker Limited
    Inventors: Richard H. Hewett, Ponnan Veerasekaran
  • Herbicidal method using diflufenican
    Patent number: 4990177
    Abstract: The invention provides a method of controlling the growth of weeds using (a) a urea herbicide and (b) diflufenican; herbicidal compositions comprising (a) and (b) are described.
    Type: Grant
    Filed: July 1, 1986
    Date of Patent: February 5, 1991
    Assignee: May & Baker, Ltd.
    Inventors: Richard H. Hewett, Ponnan Veerasekaran