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).

  • Intermediates for herbicidal sulfonamides
    Patent number: 4305884
    Abstract: This invention relates to novel o-carbonylbenzenesulfonyl isocyanates and their use as intermediates for the preparation of sulfonylureas which are known to be active herbicides.
    Type: Grant
    Filed: July 23, 1980
    Date of Patent: December 15, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Agricultural sulfonamides
    Patent number: 4302241
    Abstract: This invention relates to novel N-(heterocyclicaminocarbonyl)arylsulfonamides in which the aryl radical is substituted by two carboxyl radicals. The compounds have utility as herbicides.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: November 24, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal N-(pyridinylaminocarbonyl)benzenesulfonamides
    Patent number: 4293330
    Abstract: N-(Pyridinylaminocarbonyl)benzenesulfonamides are useful for the regulation of plant growth and as pre-emergence and post-emergence herbicides.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: October 6, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal sulfonamides
    Patent number: 4257802
    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: October 6, 1977
    Date of Patent: March 24, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Intermediates for herbicidal sulfonamides
    Patent number: 4238621
    Abstract: This invention relates to novel o-carbonylbenzenesulfonyl isocyanates and their use as intermediates for the preparation of sulfonylureas which are known to be active herbicides.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: December 9, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal sulfonamides
    Patent number: 4231784
    Abstract: N-(Heterocyclicaminocarbonyl)arylsulfonamides, such as N-[(4-methoxy-6-methylamino-1,3,5-triazin-2-yl) aminocarbonyl]benzenesulfonamide, are useful for the regulation of plant growth and as herbicides, particularly for controlling volunteer corn in soybeans.
    Type: Grant
    Filed: May 10, 1979
    Date of Patent: November 4, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal sulfonamides
    Patent number: 4225337
    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: October 27, 1978
    Date of Patent: September 30, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • N-[(2,6-Dimethoxypyrimidin-4-yl)]aminocarbonyl benzene sulfonamides and their herbicidal compositions and methods of use
    Patent number: 4221585
    Abstract: N-(heterocyclicaminocarbonyl)sulfonamides, such as N-[(2,6-dimethoxypyrimidin-4-yl)aminocarbonyl]-2-methylbenzenesulfonamide are useful for the regulation of plant growth and as preemergence and postemergence herbicides.
    Type: Grant
    Filed: August 4, 1978
    Date of Patent: September 9, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal pyrimidine and triazine sulfonamides
    Patent number: 4214890
    Abstract: N-(heterocyclicaminocarbonyl)arylsulfonamides and thienylsulfonamides in which the heterocyclic radical is substituted in one position by a methyl or methoxy radical and in another by a substituted alkoxy or alkylthio radical; 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-nitr obenzenesulfonamide; are useful for the regulation of plant growth and as pre-emergence and post-emergence herbicides.
    Type: Grant
    Filed: September 27, 1978
    Date of Patent: July 29, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal sulfonamides
    Patent number: 4190432
    Abstract: N-(heterocyclicaminocarbonyl)arylsulfonamides, such as N-[(4-methoxy-6-methylamino-1,3,5-triazin-2-yl)-aminocarbonyl]benzenesulfo namide, are useful for the regulation of plant growth and as herbicides, particularly for controlling volunteer corn in soybeans.
    Type: Grant
    Filed: August 1, 1977
    Date of Patent: February 26, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Substituted isoindoles
    Patent number: 4175948
    Abstract: This invention relates to novel compounds of the formulae and their use as herbicides: ##STR1## wherein X is H, F, Cl, Br, CN, NO.sub.2 or OCH.sub.3 ;Y is H, F, or CH.sub.3 ; andZ is H, F, Cl, Br or OCH.sub.3 provided that(1) when Y is CH.sub.3, X is F, Cl, or Br;(2) when Z is 6-Cl or 6-Br, Y is F; and,(3) X, Y and Z may not all be H simultaneously.
    Type: Grant
    Filed: July 26, 1978
    Date of Patent: November 27, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Steven J. Goddard, George Levitt
  • Herbicidal sulfonamides
    Patent number: 4169719
    Abstract: N-(heterocyclicaminocarbonyl)arylsulfonamides, such as N-[(4,6-dimethylpyrimidin-2-yl)aminocarbonyl] benzenesulfonamide, are useful for the regulation of plant growth and as herbicides, particularly for controlling nutsedge.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: October 2, 1979
    Assignee: E. I. Du Pont de Nemours and Co.
    Inventor: George Levitt
  • Herbicidal sulfonamides
    Patent number: 4127405
    Abstract: N-(1,3,5-triazin-2-ylaminocarbonyl) arylsulfonamides, such as N-[(4,6-dimethyl-1,3,5-triazin-2-yl)aminocarbonyl]benzenesulfonamide, are useful for the regulation of plant growth and as herbicides, particularly for controlling nutsedge.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: November 28, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Herbicidal sulfonamides
    Patent number: 4120691
    Abstract: Novel N-(1,2,4-triazin-3-ylaminocarbonyl) arylsulfonamides, such as N-[(5,6-dimethyl-1,2,4-triazin-3-yl)aminocarbonyl]benzene sulfonamide, are useful for regulating the growth of plants.
    Type: Grant
    Filed: September 1, 1977
    Date of Patent: October 17, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Substituted isoindoles
    Patent number: 4120693
    Abstract: This invention relates to novel compounds of the formulae and their use as herbicides: ##STR1## wherein X is H, F, Cl, Br, CN, NO.sub.2 or OCH.sub.3 ;Y is H, F, or CH.sub.3 ; andZ is H, F, Cl, Br or OCH.sub.3 provided that(1) when Y is CH.sub.3 ; X is F, Cl, or Br;(2) when Z is 6--Cl or 6--Br, Y is F; and,(3) X, Y and Z may not all be H simultaneously.
    Type: Grant
    Filed: July 29, 1976
    Date of Patent: October 17, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Steven Jerome Goddard, George Levitt