Patents by Inventor Alvin D. Crews, Jr.

Alvin D. Crews, Jr. 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).

  • 1-(3-heterocyclylphenyl)-s-triazine-2,4,6-oxo or thiotrione herbicidal agents
    Patent number: 5616706
    Abstract: There is provided a 1-(3-heterocyclylphenyl)-s-triazine-2,4,6-oxo or thiotrione compound having the structural formula I ##STR1## Further provided are a composition and a method comprising that compound for the control of undesirable plant species.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: April 1, 1997
    Assignee: American Cyanamid Company
    Inventors: Alvin D. Crews, Jr., Philip M. Harrington, Gary M. Karp, Mark C. Manfredi, Michael A. Guaciaro
  • 1-(3-heterocyclylphenyl)-s-triazine-2,4,6-oxo or thiortione herbicidal agents
    Patent number: 5612481
    Abstract: There is provided a 1-(3-heterocyclylphenyl)-s-triazine-2,4,6-oxo or thiotrione compound having the structural formula I ##STR1## Further provided are a composition and a method comprising that compound for the control of undesirable plant species.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: March 18, 1997
    Assignee: American Cyanamid Company
    Inventors: Alvin D. Crews, Jr., Philip M. Harrington, Gary M. Karp, Mark C. Manfredi, Michael A. Guaciaro
  • 1-(3-heterocyclylphenyl)-s-triazine-2,4,6-oxo or thiotrione herbicidal agents
    Patent number: 5610120
    Abstract: There is provided a 1-(3-heterocyclylphenyl)-s-triazine-2,4,6-oxo or thiotrione compound having the structural formula I ##STR1## Further provided are a composition and a method comprising that compound for the control of undesirable plant species.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: March 11, 1997
    Assignee: American Cyanamid Company
    Inventors: Alvin D. Crews, Jr., Philip M. Harrington, Gary M. Karp, Mark C. Manfredi, Michael A. Guaciaro
  • 3-(3-aryloxyphenyl)-1 (substituted methyl)-s-triazine-2,4,6-oxo or thiotrione herbicidal agents
    Patent number: 5604180
    Abstract: There is provided a 3-(3-aryloxyphenyl)-1-(substituted methyl)-s-triazine-2,4,6-oxo or thiotrione compound having the structural formula I ##STR1## Further provided are a composition and a method comprising that compound for the control of undesirable plant species.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: February 18, 1997
    Inventors: Alvin D. Crews, Jr., Philip M. Harrington, Gary M. Karp, Simon D. Gill, Petra Dieterich
  • 6-heterocyclyl-1-(substituted phenyl) benzotriazole herbicidal agents
    Patent number: 5545742
    Abstract: There is provided a 6-heterocyclyl-1-(substituted phenyl)benzotriazole compound having the structural formula I ##STR1## Further provided are a composition and a method comprising that compound for the control of undesirable plant species.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: August 13, 1996
    Assignee: American Cyanamid Co.
    Inventors: Michael E. Condon, Alvin D. Crews, Jr., Mark C. Manfredi
  • 6-heterocyclyl-1-(substituted phenyl)benzotriazole herbicidal agents
    Patent number: 5523277
    Abstract: There is provided a 6-heterocyclyl-1-(substituted phenyl)benzotriazole compound having the structural formula I ##STR1## Further provided are a composition and a method comprising that compound for the control of undesirable plant species.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: June 4, 1996
    Assignee: American Cyanamid Company
    Inventors: Michael E. Condon, Alvin D. Crews, Jr., Mark C. Manfredi
  • 3-(3-aryloxyphenyl)-1-(substituted methyl)-s-triazine-2,4,6-oxo or thiotrione herbicidal agents
    Patent number: 5519133
    Abstract: There is provided a 3-(3-aryloxyphenyl)-1-(substituted methyl)-s-triazine-2,4,6-oxo or thiotrione compound having the structural formula I ##STR1## Further provided are a composition and a method comprising that compound for the control of undesirable plant species.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: May 21, 1996
    Assignee: American Cyanamid Co.
    Inventors: Alvin D. Crews, Jr., Philip M. Harrington, Gary M. Karp, Simon D. Gill, Petra Dieterich
  • 6-heterocyclyl-1-(substituted phenyl)benzotriazole herbicidal agents
    Patent number: 5496954
    Abstract: There is provided a 6-heterocyclyl-1-(substituted phenyl)benzotriazole compound having the structural formula I ##STR1## Further provided are a composition and a method comprising that compound for the control of undesirable plant species.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: March 5, 1996
    Assignee: American Cyanamid Co.
    Inventors: Michael E. Condon, Alvin D. Crews, Jr., Mark C. Manfredi
  • Aryloxy-n-(substituted phenyl) benzotriazole herbicidal agents
    Patent number: 5484762
    Abstract: There is provided an aryloxy-N-(substituted phenyl)benzotriazole compound having the structural formula I ##STR1## Further provided are a composition and a method comprising that compound for the control of undesirable plant species.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: January 16, 1996
    Assignee: American Cyanamid Company
    Inventors: Michael E. Condon, Alvin D. Crews, Jr., Mark C. Manfredi
  • Aryloxybenzene herbicidal agents
    Patent number: 5424280
    Abstract: There are provided aryloxybenzene compounds of formula I ##STR1## Further provided are compositions and methods comprising those compounds for the control of undesirable plant species.
    Type: Grant
    Filed: October 7, 1993
    Date of Patent: June 13, 1995
    Assignee: American Cyanamid Company
    Inventors: Michael E. Condon, 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: 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
  • 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
  • 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