Patents by Inventor Mary A. Hanagan

Mary A. Hanagan 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 pyridine sulfonamides
    Patent number: 5008393
    Abstract: (Aminosulfonyl)pyridine carboxamides are useful as agricultural chemicals. In particular, many compounds are useful as herbicides which show significant herbicidal activity on grasses and yet have the unexpected property of being safe to corn.
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: April 16, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mary A. Hanagan
  • Herbicidal pyridine sulfonamides
    Patent number: 4948419
    Abstract: This invention relates to certain novel pyridine sulfonamide compounds, to compositions containing such compounds, and to a method of use of such compositions to control the growth of undesired vegetation.
    Type: Grant
    Filed: February 15, 1989
    Date of Patent: August 14, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mary A. Hanagan, Barry A. Wexler
  • Herbicidal Sulfonamides
    Patent number: 4878938
    Abstract: This invention relates to novel herbicidally active sulfonylurea compounds substituted in the positions ortho to the sulfonylurea bridge, agriculturally suitable compositions thereof and methods of their use as preemergent or postemergent herbicides or plant growth regulants.
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: November 7, 1989
    Assignee: E. I. Du Pont De Nemours and Company
    Inventor: Mary A. Hanagan
  • Herbicidal sulfonamides
    Patent number: 4838929
    Abstract: Sulfonamides such as N-[(4,6-dimethoxypyrimidin-2-aminocarbonyl]-1,3-dihydro-6-methyl-3-oxofuro [3,4-c]pyridine-4-sulfonamide are useful as herbicides and plant growth regulants.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: June 13, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mary A. Hanagan
  • Herbicidal pyridine sulfonamides
    Patent number: 4838926
    Abstract: This invention relates to certain novel pyridine sulfonamide compounds, to composition containing such compounds, and to a method of use of such compositions to control the growth of undesired vegetation.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: June 13, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Mary A. Hanagan, Barry A. Wexler
  • Herbicidal pyridine sulfonamides
    Patent number: 4789393
    Abstract: N,N-dimethyl-2-(aminosulfonyl)-3-pyridine carboxamides are useful as agricultural chemicals. In particular, the compounds are useful as herbicides which show significant herbicidal activity on grasses and yet have the unexpected property of being safe to corn.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: December 6, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mary A. Hanagan
  • Herbicidal pyridine sulfonamides
    Patent number: 4786734
    Abstract: (Aminosulfonyl)pyridine carboxamides are useful as agricultural chemicals. In particular, many compounds are useful as herbicides which show significant herbicidal activity on grasses and yet have the unexpected property of being safe to corn.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: November 22, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mary A. Hanagan
  • Herbicidal ortho-alkyl- and ortho-alkenyl-substituted benzenesulfonamides
    Patent number: 4770690
    Abstract: A class of ortho-alkyl- and ortho-alkenyl-substituted benzenesulfonamides are useful as general or selective pre-emergent or post-emergent herbicides and as plant growth regulants.
    Type: Grant
    Filed: April 8, 1987
    Date of Patent: September 13, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Mary A. Hanagan, Mark E. Thompson
  • Herbicidal sulfonamides
    Patent number: 4764204
    Abstract: This invention relates to novel herbicidally active sulfonylurea compounds substituted in the positions ortho to the sulfonylurea bridge, agriculturally suitable compositions thereof and methods of their use as preemergent or postemergent herbicides or plant growth regulants.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: August 16, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mary A. Hanagan
  • Herbicidal sulfonamides
    Patent number: 4723987
    Abstract: Sulfonamides such as N-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-1,3-dihydro-6-methyl-3-oxof uro[3,4-c]pyridine-4-sulfonamide are useful as herbicides and plant growth regulants.
    Type: Grant
    Filed: April 22, 1986
    Date of Patent: February 9, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mary A. Hanagan
  • Herbicidal sulfonamides
    Patent number: 4705556
    Abstract: This invention relates to novel herbicidally active sulfonylurea compounds substituted in the positions ortho to the sulfonylurea bridge, agriculturally suitable compositions thereof and methods of their use as preemergent or postemergent herbicides or plant growth regulants.
    Type: Grant
    Filed: March 18, 1986
    Date of Patent: November 10, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mary A. Hanagan
  • Herbicidal ortho-alkyl-and ortho-alkenyl substituted benzenesulfonamides
    Patent number: 4699650
    Abstract: A class of ortho-alkyl- and ortho-alkenyl-substituted benzenesulfonamides are useful as general or selective pre-emergent or post-emergent herbicides and as plant growth regulants.
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: October 13, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Mary A. Hanagan, Mark E. Thompson
  • Herbicidal ortho-alkyl- and ortho-alkenyl-substituted benzenesulfonamides
    Patent number: 4678502
    Abstract: A class of ortho-alkyl- and ortho-alkenyl-substituted benzenesulfonamides are useful as general or selective pre-emergent or post-emergent herbicides and as plant growth regulants.
    Type: Grant
    Filed: May 3, 1985
    Date of Patent: July 7, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Mary A. Hanagan, Mark E. Thompson
  • Herbicidal sulfonamides
    Patent number: 4604131
    Abstract: This invention relates to novel herbicidally active sulfonylurea compounds substituted in the positions ortho to the sulfonylurea bridge, agriculturally suitable compositions thereof and methods of their use as preemergent or postemergent herbicides or plant growth regulants.
    Type: Grant
    Filed: July 12, 1984
    Date of Patent: August 5, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mary A. Hanagan