Patents by Inventor Barry A. Wexler

Barry A. Wexler 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 heterocyclic sulfonamides
    Patent number: 5011527
    Abstract: This invention relates to certain heterocyclic sulfonylurea herbicidal compounds, agriculturally suitable compositions thereof and a method of their use.
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: April 30, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Barry A. Wexler
  • 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 heterocyclic sulfonamides
    Patent number: 4906278
    Abstract: This invention relates to certain heterocyclic sulfonylurea herbicidal compounds, agriculturally suitable compositions thereof and a method of their use.
    Type: Grant
    Filed: March 30, 1987
    Date of Patent: March 6, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Barry A. Wexler
  • Herbicidal pyridine N-oxide sulfonylureas
    Patent number: 4900353
    Abstract: This invention relates to pyridine N-oxide sulfonylurea herbicides, agriculturally suitable compositions containing them and their method-of-use as preemergent and/or postemergent herbicides or plant growth regulants.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: February 13, 1990
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: William E. Barnette, Thomas R. Dean, Wallace C. Petersen, Barry A. Wexler
  • Herbicidal sulfonamides
    Patent number: 4895591
    Abstract: The invention relates to certain pyridine sulfonamide compounds having haloalkenyl substituents ortho to the sulfonylurea linkage.
    Type: Grant
    Filed: August 30, 1988
    Date of Patent: January 23, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: James V. Hay, Barry A. Wexler, Donna F. Zimmerman
  • Herbicidal sulfonamides
    Patent number: 4867783
    Abstract: This invention relates to certain sulfonylurea compounds having substituents ortho to the sulfonyl-urea linkage that includes a 3- or 4-membered carbocyclic ring, a saturated 5- or 6-membered carbocyclic ring of a heterocyclic ring which contains 1 hetero-atom selected from O, S and NR.sub.3, agriculturally suitable compositions thereof and a method of their use as herbicides or plant growth regulants.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: September 19, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: James V. Hay, Barry A. Wexler, Donna F. Zimmerman
  • Herbicidal pyrazole sulfonamides
    Patent number: 4846878
    Abstract: This invention relates to certain pyrazole sulfonylurea herbicidal compounds, agriculturally suitable compositions thereof and a method of their use.
    Type: Grant
    Filed: February 23, 1988
    Date of Patent: July 11, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Barry A. Wexler
  • 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 sulfonamides
    Patent number: 4822403
    Abstract: The invention relates to certain sulfonamide compounds having substituents ortho to the sulfonylurea linkage, said substituents including alkenyl, substituted alkenyl, cycloalkenyl, substituted cycloalkenyl, alkynyl and substituted alkynyl.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: April 18, 1989
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: James V. Hay, Barry A. Wexler, Donna F. Zimmerman
  • Herbicidal pyridine N-oxide sulfonylureas
    Patent number: 4789465
    Abstract: This invention relates to pyridine N-oxide sulfonylurea herbicides, agriculturally suitable compositions containing them and their method-of-use as preemergent and/or postemergent herbicides or plant growth regulants.
    Type: Grant
    Filed: August 31, 1987
    Date of Patent: December 6, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William E. Barnette, Thomas R. Dean, Wallace C. Petersen, Barry A. Wexler
  • Herbicidal sulfonamides
    Patent number: 4786313
    Abstract: The invention relates to certain pyridine sulfonamide compounds having haloalkenyl substituents ortho to the sulfonylurea linkage.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: November 22, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: James V. Hay, Barry A. Wexler, Donna F. Zimmerman
  • Herbicidal heterocyclic sulfonamides
    Patent number: 4778512
    Abstract: This invention relates to certain heterocyclic sulfonylurea herbicidal compounds, agriculturally suitable compositions thereof and a method of their use.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: October 18, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Barry A. Wexler
  • Herbicidal pyrazole sulfonamides
    Patent number: 4747870
    Abstract: This invention relates to certain pyrazole sulfonylurea herbicidal compounds, agriculturally suitable compositions thereof and a method of their use.
    Type: Grant
    Filed: March 13, 1987
    Date of Patent: May 31, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Barry A. Wexler
  • Herbicidal sulfonamides
    Patent number: 4743292
    Abstract: The invention relates to certain pyrazole sulfonamide compounds having haloalkenyl substituents ortho to the sulfonylurea linkage.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: May 10, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: James V. Hay, Barry A. Wexler, Donna F. Zimmerman
  • Herbicidal sulfonamides
    Patent number: 4741758
    Abstract: The invention relates to certain thiophene sulfonamide compounds having alkenyl substituents ortho to the sulfonylurea linkage.
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: May 3, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: James V. Hay, Barry A. Wexler, Donna F. Zimmerman
  • Herbicidal sulfonamides
    Patent number: 4732604
    Abstract: This invention relates to certain sulfonylurea compounds having substituents ortho to the sulfonylurea linkage that includes a 3- or 4- membered carbocyclic ring, a saturated 5- or 6- membered carbocyclic ring or a heterocyclic ring which contains 1 heteroatom selected from O, S and NR.sub.3, agriculturally suitable compositions thereof and a method of their use as herbicides or plant growth regulants.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: March 22, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: James V. Hay, Barry A. Wexler, Donna F. Zimmerman
  • Herbicidal sulfonamides
    Patent number: 4721521
    Abstract: The invention relates to certain pyridine sulfonamide compounds having haloalkenyl substituents ortho to the sulfonylurea linkage.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: January 26, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: James V. Hay, Barry A. Wexler, Donna F. Zimmerman
  • Herbicidal pyrazole sulfonylureas
    Patent number: 4715885
    Abstract: Pyrazole sulfonylureas are expected to show pre- and post-emergence herbicidal activity. Specifically preferred in this class of compounds is N-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-4,6-dihydro-2-methyl-4-oxo- 2H-furo[3,4-c]pyrazole-3-sulfonamide.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: December 29, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Barry A. Wexler
  • Herbicidal pyrazole sulfonamides
    Patent number: 4715886
    Abstract: Pyrazole sulfonamides are found to have utility as preemergent and/or postemergent herbicides or plant growth regulants.
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: December 29, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Barry A. Wexler
  • Herbicidal sulfonamides
    Patent number: 4693743
    Abstract: Pyrazole sulfonylureas are useful as pre- and post-emergence herbicides. Typical of this group is 3-[[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]aminosulfonylmethyl]-1,5-di methyl-1H-pyrazole-4-carboxylic acid, ethyl ester.
    Type: Grant
    Filed: May 15, 1986
    Date of Patent: September 15, 1987
    Assignee: E. I. Du Pont de Nemours & Company
    Inventor: Barry A. Wexler