Patents by Inventor Craig L. Hillemann

Craig L. Hillemann 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 sulfonamides
    Patent number: 4981509
    Abstract: This invention relates to certain sulfonylurea herbicidal compounds, agriculturally suitable compositions thereof and a method of their use.
    Type: Grant
    Filed: April 26, 1989
    Date of Patent: January 1, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Craig L. Hillemann
  • Herbicidal sulfonamides
    Patent number: 4877442
    Abstract: The invention relates to certain herbicidal sulfonamides, agriculturally suitable compositions thereof and a method for their use as a general or selective preemergent or postemergent herbicide or as a plant growth regulant.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: October 31, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Craig L. Hillemann
  • Herbicidal sulfonamides
    Patent number: 4871847
    Abstract: This invention relates to 2-[[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]aminosulfonyl]-4-(difluorom ethoxy)benzoic acid, ethyl ester, agriculturally suitable compositions thereof and methods of its use.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: October 3, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Craig L. Hillemann
  • Herbicidal sulfonamides
    Patent number: 4849010
    Abstract: This invention relates to certain sulfonylurea herbicidal compounds, agriculturally suitable compositions thereof and a method of their use.
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: July 18, 1989
    Assignee: E. I. DuPont de Nemours and Company
    Inventor: Craig L. Hillemann
  • Herbicidal sulfonamides
    Patent number: 4724039
    Abstract: This invention relates to 2-[[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]aminosulfonyl]-4-(difluorom ethoxy)benzoic acid, ethyl ester, agriculturally suitable compositions thereof and methods of its use.
    Type: Grant
    Filed: February 10, 1986
    Date of Patent: February 9, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Craig L. Hillemann
  • Herbicidal sulfonamides
    Patent number: 4710221
    Abstract: This invention relates to certain sulfonylurea herbicidal compounds, agriculturally suitable compositions thereof and a method of their use.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: December 1, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Craig L. Hillemann
  • Herbicidal triazines
    Patent number: 4705555
    Abstract: Aryl and heteroaryl sulfonimidamides which also contain a pyrimidine or triazine heterocycle are useful as general or selective preemergent and postemergent herbicides.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: November 10, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Craig L. Hillemann
  • Herbicidal pyrimidines
    Patent number: 4666506
    Abstract: Aryl and heteroaryl sulfonimidamides which also contain a pyrimidine or triazine heterocycle are useful as general or selective preemergent and postemergent herbicides.
    Type: Grant
    Filed: July 11, 1985
    Date of Patent: May 19, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Craig L. Hillemann
  • Herbicidal sulfonamides
    Patent number: 4632693
    Abstract: This invention relates to a novel herbicidal sulfonamide, agriculturally suitable compositions and a method for using it as an herbicide.
    Type: Grant
    Filed: February 14, 1985
    Date of Patent: December 30, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Craig L. Hillemann
  • Herbicidal selenylsulfonamides
    Patent number: 4588432
    Abstract: Novel sulfonylurea compounds containing a selenoalkyl substituent such as N-[[4-methoxy-6-(methylselenyl)pyrimidin-2-yl]aminocarbonyl]-2-methylsulfo nylbenzenesulfonamide and N-](4-methoxy-6-methyl-1,3,5-triazine-2-yl)aminocarbonyl]-2-methylselenylb enzenesulfonamide, suitable agricultural compositions containing these compounds, and their method-of-use as pre-emergence and post-emergence herbicides or plant growth regulants are disclosed.
    Type: Grant
    Filed: December 11, 1984
    Date of Patent: May 13, 1986
    Assignee: E. I. Du Pont De Nemours and Company
    Inventor: Craig L. Hillemann