Patents by Inventor George Levitt

George Levitt 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).

  • Alkyl sulfonyl sulfonamides
    Patent number: 4543120
    Abstract: This invention relates to alkyl sulfonyl sulfonamides which are useful as herbicides and plant growth regulants.
    Type: Grant
    Filed: July 8, 1983
    Date of Patent: September 24, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: George Levitt, Anthony D. Wolf
  • Agricultural sulfonamides
    Patent number: 4536576
    Abstract: N-(heterocyclicaminocarbonyl)arylsulfonamides in which the aryl radical is substituted in the 2-position by a carboxy radical, ester, thioester, or amide thereof; e.g. N-[(4,6-dimethylpyrimidin-2-yl)aminocarbonyl]-2-methoxycarbonylbenzenesulf onamide or N-[(4,6-dimethoxy-1,3,5-triazin-2-yl)aminocarbonyl]-2-methoxycarbonylbenze nesulfonamide; are useful for the regulation of plant growth and as pre-emergence and post-emergence herbicides.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: August 20, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal N-(heterocyclic)-aminocarbonyl thiophenesulfonamides
    Patent number: 4523943
    Abstract: Designated thiophenesulfonamides are useful as herbicides and in particular in the control of broadleaf weeds.
    Type: Grant
    Filed: May 4, 1983
    Date of Patent: June 18, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Agricultural pyridinesulfonamides
    Patent number: 4522645
    Abstract: N-(heterocyclicaminocarbonyl)pyridinesulfonamides are useful for the regulation of plant growth and as pre-emergence and post-emergence herbicides.
    Type: Grant
    Filed: January 6, 1984
    Date of Patent: June 11, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal triazine sulfonamides
    Patent number: 4501607
    Abstract: N-(heterocyclicaminocarbonyl)arylsulfonamides and thienylsulfonamides in which the heterocyclic radical is disubstituted; e.g., N-[[4-(2-methoxyethoxy)-6-methylpyrimidin-2-yl]aminocarbonyl]-2-nitrobenze nesulfonamide and N-[[(4-(2,2,2-trifluoroethoxy)-6-methylpyrimidin-2-yl]aminocarbonyl]-2-nit robenzenesulfonamide; are useful for the regulation of plant growth and as pre-emergence and post-emergence herbicides.
    Type: Grant
    Filed: January 30, 1980
    Date of Patent: February 26, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal heterocyclic alkylaminocarbonylsulfonamides
    Patent number: 4496392
    Abstract: Heterocyclic alkylaminocarbonylsulfonamides, such as N'-[(4,6-dimethylpyrimidin-2-yl)methylaminocarbonyl]-N,N-dimethyl-1,2-benz enedisulfonamide, are useful as herbicides.
    Type: Grant
    Filed: March 14, 1983
    Date of Patent: January 29, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal s-triazines
    Patent number: 4492599
    Abstract: This invention relates to novel urea and isourea compounds, agricultural compositions containing them and to their method of use as pre- and post- emergence herbicides and to plant growth regulants.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: January 8, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: George Levitt, Wallace C. Petersen
  • Triazinyl-sulfonyl-ureas and isoureas
    Patent number: 4481029
    Abstract: This invention relates to ureas and isoureas which are useful as herbicides and plant growth regulants. In particular, compounds of the instant invention have demonstrated great selectivity.
    Type: Grant
    Filed: December 16, 1982
    Date of Patent: November 6, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Pyrrole sulfonamides
    Patent number: 4473394
    Abstract: This invention relates to pyrrole sulfonamides which are useful as herbicides. Typical of the pyrrole sulfonamides of the instant application in N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)aminocarbonyl]-2,5-dimethyl-1H-p yrrole-3-sulfonamide.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: September 25, 1984
    Assignee: E. I. DuPont De Nemours & Company
    Inventors: John C. Budzinski, George Levitt
  • Herbicidal alkenyl sulfonamides
    Patent number: 4461640
    Abstract: Alkenylsulfonylureas have been found to be effective as herbicides and plant growth regulants.
    Type: Grant
    Filed: June 2, 1982
    Date of Patent: July 24, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: George Levitt, William T. Zimmerman
  • Triazinyl ureas and isoureas
    Patent number: 4460404
    Abstract: Condensed ring aromatic ureas and isoureas are useful as plant growth regulants and as pre- and/or post-emergence herbicides.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: July 17, 1984
    Assignee: E. I. DuPont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal triazinyl sulfonamides
    Patent number: 4453970
    Abstract: N-[Heterocyclicaminocarbonyl]-8-quinolinesulfonamides such as N-[(4,6-dimethoxy-1,3,5-triazin-2-yl)aminocarbonyl]-8-quinolinesulfonamide or N-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-8-quinolinesulfonamide are useful for plant growth retardation, brush control and weed control in crops.
    Type: Grant
    Filed: September 23, 1982
    Date of Patent: June 12, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: George Levitt, Chin-Lung Yeh, John C. Budzinski
  • Herbicidal sulfonamides
    Patent number: 4453971
    Abstract: N-(heterocyclicaminocarbonyl)arylsulfonamides, such as 3-isocyanato-N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)aminocarbonyl]benze nesulfonamide or methyl [3-[[(4-methoxy-6-methylpyrimidin-2-yl)aminocarbonyl]aminosulfonyl]phenyl] carbamate, are useful for the regulation of plant growth and as herbicides.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: June 12, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Substituted benzene sulfonyl isocyanates as intermediates to herbicidal sulfonamides
    Patent number: 4454335
    Abstract: Novel o-aminosulfonylphenyl acetic acid derivatives are useful as plant growth regulants and herbicides.
    Type: Grant
    Filed: June 14, 1982
    Date of Patent: June 12, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Agricultural ureas and isoureas
    Patent number: 4452627
    Abstract: Condensed ring aromatic ureas and isoureas are useful as plant growth regulants and as pre- and/or post-emergence herbicides.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: June 5, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal sulfonamides
    Patent number: 4443244
    Abstract: N-(heterocyclicaminocarbonyl)arylsulfonamides in which at least one of the acyclic nitrogens thereof is substituted by lower alkyl, or sometimes in the case of aminocarbonyl nitrogen, by methoxy; e.g. N-[N-(4,6-dimethoxy-1,3,5-triazin-2-yl)-N-methylaminocarbonyl]-2-chloroben zenesulfonamide or N-[N-(4,6-dimethoxy-1,3,5-triazin-2-yl)-N-methylaminocarbonyl]-2-nitrobenz enesulfonamide; are useful for the regulation of plant growth and as general and selective herbicides.
    Type: Grant
    Filed: April 21, 1982
    Date of Patent: April 17, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Agricultural pyridinesulfonamides
    Patent number: 4435206
    Abstract: N-(heterocyclicaminocarbonyl)pyridinesulfonamides are useful for the regulation of plant growth and as pre-emergence and post-emergence herbicides.
    Type: Grant
    Filed: January 22, 1981
    Date of Patent: March 6, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal sulfonamides
    Patent number: 4424073
    Abstract: N-(5-substituted pyrimidin-2-ylaminocarbonyl)sulfonamides such as N-(5-chloropyrimidin-2-ylaminocarbonyl)sulfonamides are useful as herbicides.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: January 3, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal sulfonamides
    Patent number: 4417917
    Abstract: Certain benzene-1,2-disulfonic acid derivatives are useful as agricultural chemicals, and in particular as herbicides.
    Type: Grant
    Filed: October 20, 1981
    Date of Patent: November 29, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: George Levitt, Richard F. Sauers
  • Sulfamoyl chlorides
    Patent number: 4401816
    Abstract: Sulfamoyl chlorides such as [(4,6-dimethylpyrimidin-2-yl)aminocarbonyl]sulfamoyl chloride are useful intermediates for the preparation of sulfamides and pyrrole sulfonamides which are useful as agricultural chemicals and particularly as herbicides.
    Type: Grant
    Filed: March 25, 1981
    Date of Patent: August 30, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt