Patents by Inventor Peter J. Wepplo

Peter J. Wepplo 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).

  • Method for safening herbicides in cereal crops using 5-aryloxy-1,2-(disubstituted)benzene compounds
    Patent number: 5596124
    Abstract: There is provided a method for safening herbicides in cereal crop plants by using 5-aryloxy-1,2 -(disubstituted)benzene compounds of formula I ##STR1## Further provided are compositions comprising a 5-aryloxy-1,2-(disubstituted)benzene compound of formula I.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: January 21, 1997
    Assignee: American Cyanamid Company
    Inventors: Gail E. Cary, Peter J. Wepplo, Barbara A. Bench
  • Substituted benzisoxazole and benzisothiazole herbicidal agents
    Patent number: 5523278
    Abstract: There are provided substituted benzisoxazole and benzisothiazole compounds having the structural formula I ##STR1## Further provided are compositions and methods comprising those compounds for the control of undesirable plant species.
    Type: Grant
    Filed: September 12, 1995
    Date of Patent: June 4, 1996
    Assignee: American Cyanamid Company
    Inventor: Peter J. Wepplo
  • Substituted benzisoxazole and benzisothiazole herbicidal agents
    Patent number: 5484763
    Abstract: There are provided substituted benzisoxazole and benzisothiazole compounds having the structural formula I ##STR1## Further provided are compositions and methods comprising those compounds for the control of undesirable plant species.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: January 16, 1996
    Assignee: American Cyanamid Company
    Inventor: Peter J. Wepplo
  • Benzenesulfonyl carboxamide compounds intermediate compounds and methods of preparation thereof and use of said compounds and intermediate compounds as herbicidal agents
    Patent number: 5391757
    Abstract: There are provided novel benzenesulfonyl carboxamide compounds and novel intermediate benzenesulfonyl-2-imidazolin-5-one compounds, novel intermediates and methods for the preparation of said compounds, and a method for controlling a variety of annual and perennial plant species utilizing novel benzenesulfonyl carboxamide compounds and novel intermediate benzenesulfonyl 2-imidazolin-5-one compounds.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: February 21, 1995
    Assignee: American Cyanamid Company
    Inventors: Sergio I. Alvarado, Alvin D. Crews, Jr., Peter J. Wepplo, Robert F. Doehner, Jr., Thomas E. Brady, David M. Gange, Desiree L. Little
  • 3-(substituted ketone and alcohol)-2-(2-imidazolin-2-yl) pyridine and quinoline herbicidal agents
    Patent number: 5380698
    Abstract: 3-(Substituted ketone and alcohol)-2-(2-imidazolin-2-yl)pyridine and quinoline compounds which are effective in the control of undesirable plant species are described. Also described are a method for the herbicidal use of the compounds and a method for their preparation.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: January 10, 1995
    Assignee: American Cyanamid Company
    Inventors: Peter J. Wepplo, Alvin D. Crews, Jr.
  • Benzenesulfonyl carboxamide compounds intermediate compounds and methods of preparation thereof and use of said compounds and intermediate compounds as herbicidal agents
    Patent number: 5338883
    Abstract: There are provided novel benzenesulfonyl carboxamide compounds and novel intermediate benzenesulfonyl-2-imidazolin-5-one compounds, novel intermediates and methods for the preparation of said compounds, and a method for controlling a variety of annual and perennial plant species utilizing novel benzenesulfonyl carboxamide compounds and novel intermediate benzenesulfonyl 2-imidazolin-5-one compounds.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: August 16, 1994
    Assignee: American Cyanamid Company
    Inventors: Sergio I. Alvarado, Alvin D. Crews, Jr., Peter J. Wepplo, Robert F. Doehner, Jr., Thomas E. Brady, David M. Gange, Desiree L. Little
  • 3-(substituted ketone and alcohol)-2-(2-imidazolin-2-yl) pyridine compounds useful as herbicidal agents
    Patent number: 5256629
    Abstract: 3-(Substituted ketone and alcohol)-2-(2-imidazolin-2-yl)pyridine and quinoline compounds which are effective in the control of undesirable plant species are described. Also described are a method for the herbicidal use of the compounds and a method for their preparation.
    Type: Grant
    Filed: June 3, 1992
    Date of Patent: October 26, 1993
    Assignee: American Cyanamid Company
    Inventors: Peter J. Wepplo, Alvin D. Crews
  • Benzenesulfonyl carboxamide compounds intermediate compounds and method of preparation thereof and use of said compounds and intermediate compounds as herbicidal agents
    Patent number: 5252539
    Abstract: There are provided novel benzenesulfonyl carboxamide compounds and novel intermediate benzenesulfonyl-2-imidazolin-5-one compounds, novel intermediates and methods for the preparation of said compounds, and a method for controlling a variety of annual and perennial plant species utilizing novel benzenesulfonyl carboxamide compounds and novel intermediate benzenesulfonyl 2-imidazolin-5-one compounds.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: October 12, 1993
    Assignee: American Cyanamid Company
    Inventors: Sergio I. Alvarado, Alvin D. Crews, Jr., Peter J. Wepplo, Robert F. Doehner, Jr., Thomas E. Brady, David M. Gange, Desiree L. Little
  • (2-imidazolin-2-yl) fused heteropyridine compounds, intermediates for the preparation of and use of said compounds as herbicidal agents
    Patent number: 5252538
    Abstract: There are provided novel (2-imidazolin-2-yl) fused heteropyridine compounds, and intermediate compounds for the preparation thereof, and a method for controlling a wide variety of annual and perennial plant species therewith.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: October 12, 1993
    Assignee: American Cyanamid Company
    Inventors: Barrington Cross, Marinus Los, Robert F. Doehner, Jr., David W. Ladner, Jerry L. Johnson, Michael E. Jung, Victor M. Kamhi, Shin-Shyong Tseng, John M. Finn, Peter J. Wepplo
  • Benzenesulfonyl carboxamide compounds and intermediate compounds
    Patent number: 5120854
    Abstract: There are provided novel benzenesulfonyl carboxamide compounds and novel intermediate benzenesulfonyl-2-imidazolin-5-one compounds, novel intermediates and methods for the preparation of said compounds, and a method for controlling a variety of annual and perennial plant species utilizing novel benzenesulfonyl carboxamide compounds and novel intermediate benzenesulfonyl 2-imidazolin-5-one compounds.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: June 9, 1992
    Assignee: American Cyanamid Company
    Inventors: Sergio I. Alvarado, Alvin D. Crews, Jr., Peter J. Wepplo, Robert F. Doehner, Jr., Thomas E. Brady, David M. Gange, Desiree L. Little
  • Phenylsulfonyl 2-imidazolin-5-one compounds
    Patent number: 4992094
    Abstract: There are provided novel benzenesulfonyl carboxamide compounds and novel intermediate benzenesulfonyl-2-imidazolin-5-one compounds, novel intermediates and methods for the preparation of said compounds, and a method for controlling a variety of annual and perennial plant species utilizing novel benzenesulfonyl carboxamide compounds and novel intermediate benzenesulfonyl 2-imidazolin-5-one compounds.
    Type: Grant
    Filed: October 5, 1989
    Date of Patent: February 12, 1991
    Assignee: American Cyanamid Company
    Inventors: Sergio I. Alvarado, Alvin D. Crews, Jr., Peter J. Wepplo, Robert F. Doehner, Jr., Thomas E. Brady, David M. Gange, Desiree L. Little
  • Benzenesulfonyl carboxamide compounds useful as herbicidal agents
    Patent number: 4883914
    Abstract: There are provided novel benzenesulfonyl carboxamide compounds and novel intermediate benzenesulfonyl-2-imidazolin-5-one compounds, novel intermediates and methods for the preparation of said compounds, and a method for controlling a variety of annual and perennial plant species utilizing novel benzenesulfonyl carboxamide compounds and novel intermediate benzenesulfonyl 2-imidazolin-5-one compounds.
    Type: Grant
    Filed: July 7, 1988
    Date of Patent: November 28, 1989
    Assignee: American Cyanamid Company
    Inventors: Sergio I. Alvarado, Alvin D. Crews, Jr., Peter J. Wepplo, Robert F. Doehner, Jr., Thomas E. Brady, David M. Gange, Desiree L. Little
  • Process for the resolution of certain racemic amino nitriles
    Patent number: 4683324
    Abstract: The invention is a process for the selective and concomitant resolution-racemization-resolution of certain substituted, racemic amino nitriles via their respective tartrate salts. The invention further relates to certain resolved (optically active) amino amides prepared from said amino nitriles, and to the herbicidal substituted oxo-imidazolinyl nicotinic acids and 3-quinoline carboxylic acids prepared therefrom.
    Type: Grant
    Filed: May 25, 1982
    Date of Patent: July 28, 1987
    Assignee: American Cyanamid Company
    Inventors: William H. Gastrock, Peter J. Wepplo
  • Process for the preparation of pyridyl and quinolyl imidazolinones
    Patent number: 4474962
    Abstract: There is provided a novel process for the preparation of pyridyl and quinolyl imidazolinones.
    Type: Grant
    Filed: May 5, 1983
    Date of Patent: October 2, 1984
    Assignee: American Cyanamid Company
    Inventor: Peter J. Wepplo
  • Process for the preparation of 6-substituted-2,3-pyridinedicarboxylic acid diesters
    Patent number: 4460776
    Abstract: There is provided a process for the preparation of 6-substituted-2,3-pyridinedicarboxylic acid diesters useful as intermediates in the manufacture of herbicidally active 2-(2-imidazolin-2-yl)pyridine compounds.
    Type: Grant
    Filed: May 25, 1982
    Date of Patent: July 17, 1984
    Assignee: American Cyanamid Company
    Inventor: Peter J. Wepplo
  • Ovicidal and larvicidal cyanomethyl thioesters
    Patent number: 4252814
    Abstract: There are provided novel cyanomethyl thioester compounds useful as ovicidal and larvicidal agents effective for the control of insects.
    Type: Grant
    Filed: July 5, 1979
    Date of Patent: February 24, 1981
    Assignee: American Cyanamid Company
    Inventors: Peter J. Wepplo, Donald P. Wright, Jr.
  • Cyanomethyl trithiocarbonate compounds useful as ovicidal agents
    Patent number: 4197311
    Abstract: The invention is novel cyanomethyl trithiocarbonate compounds which are useful ovicidal agents effective for the control of insects and acarina.
    Type: Grant
    Filed: September 15, 1978
    Date of Patent: April 8, 1980
    Assignee: American Cyanamid Company
    Inventors: Peter J. Wepplo, Donald P. Wright, Jr.