Patents by Inventor Sergio I. Alvarado

Sergio I. Alvarado 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).

  • 4-phenoxycoumarins as herbicidal agents
    Patent number: 5808105
    Abstract: There are provided methods to control mono-cotyledenous weed species in the presence of crops and particularly in the presence of cereal crops. Also provided are 4-(2,6-disubstituted-phenoxy)coumarin derivatives useful as herbicidal agents and methods to prepare same.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: September 15, 1998
    Assignee: American Cyanamid Company
    Inventors: Sergio I. Alvarado, Pierre A. Marc, Brian J Dahlke, Eileen Reilly-Horch
  • 4-phenoxycoumarins as herbicidal agents
    Patent number: 5759959
    Abstract: There are provided methods to control monocotyledenous weed species in the presence of crops and particularly in the presence of cereal crops. Also provided are 4-(2,6-disubstituted-phenoxy)coumarin derivatives useful as herbicidal agents and methods to prepare same.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: June 2, 1998
    Assignee: American Cyanamid Company
    Inventors: Sergio I. Alvarado, Pierre A. Marc, Brian J. Dahlke, Eileen Reilly-Horch
  • 4-phenoxycoumarins as herbicidal agents
    Patent number: 5681968
    Abstract: There are provided methods to control mono-cotyledenous weed species in the presence of crops and particularly in the presence of cereal crops. Also provided are 4-(2,6-disubstituted-phenoxy)coumarin derivatives useful as herbicidal agents and methods to prepare same.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: October 28, 1997
    Assignee: American Cyanamid Company
    Inventors: Sergio I. Alvarado, Pierre A. Marc, Brian J. Dahlke, Eileen Reilly-Horch
  • 4-Phenoxycoumarins as herbicidal agents
    Patent number: 5563280
    Abstract: There are provided methods to control monocotyledenous weed species in the presence of crops and particularly in the presence of cereal crops. Also provided are 4-(2,6-disubstituted-phenoxy)coumarin derivatives useful as herbicidal agents and methods to prepare same.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: October 8, 1996
    Assignee: American Cyanamid Co.
    Inventors: Sergio I. Alvarado, Pierre A. Marc, Brian J. Dahlke, Eileen M. Reilly
  • 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
  • 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