Patents by Inventor Stephen Duke

Stephen Duke 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).

  • Herbicidal composition comprising chromone derivatives and a method for weed control
    Patent number: 11083197
    Abstract: An herbicidal composition comprising one or more compounds of Formula I: where R1 and R2 are H or taken together with the carbon atoms to which the are attached form a furane ring; R3 and R4 each independently represent H, —OH or —O—(C1-C4) alkyl; and R5 is H, (C1-C4) alkyl, —(C1-C2) alkylene-O-glucoside or —COOH; and an agriculturally acceptable vehicle. There is also disclosed a method for weed control by application of compounds of Formula I and the use of the composition for controlling weeds.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: August 10, 2021
    Assignees: Investigaciones Biologicas en Agroquimicos Rosario S.A., The United States of America, as represented by the Secretary of Agriculture
    Inventors: Gustavo M. Sosa, Lucia M. Travaini, Helmut Walter, Charles Cantrell, Stephen Duke, Nestor Carrillo, Eduardo Ceccarelli
  • HERBICIDAL COMPOSITION COMPRISING CHROMONE DERIVATIVES AND A METHOD FOR WEED CONTROL
    Publication number: 20190021328
    Abstract: An herbicidal composition comprising one or more compounds of Formula I: where R1 and R2 are H or taken together with the carbon atoms to which the are attached form a furane ring; R3 and R4 each independently represent H, —OH or —O—(C1-C4) alkyl; and R5 is H, (C1-C4) alkyl, —(C1-C2) alkylene-O-glucoside or —COOH; and an agriculturally acceptable vehicle. There is also disclosed a method for weed control by application of compounds of Formula I and the use of the composition for controlling weeds.
    Type: Application
    Filed: December 30, 2016
    Publication date: January 24, 2019
    Applicants: INVESTIGACIONES BOLÓGICAS EN AGROQUIMICOS ROSARIO S.A., THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF AGRICULTURE
    Inventors: Gustavo M. SOSA, Lucia M. TRAVAINI, Helmut WALTER, Charles CANTRELL, Stephen DUKE, Nestor CARRILLO, Eduardo CECCARELLI
  • Novel clerodanes and methods for repelling arthropods
    Publication number: 20060235071
    Abstract: A method for repelling arthropods involving treating a subject or an object with an arthropod repelling composition containing an arthropod repelling effective amount of at least one clerodane of the formula in which R1 is H, halogen, formyl, a straight chain or branched C1-4 saturated alkyl, a straight chain or branched C2-4 unsaturated alkyl, or an aryl containing 6-10 carbon atoms in the ring skeleton thereof, wherein R1 is unsubstituted or substituted with one or more substituents, which are the same or different, selected from the group consisting of oxo (?O), OR2, CO2R2, and OC(O)R2, wherein R2 is H, a straight chain or branched C1-30 saturated alkyl, a straight chain or branched C2-30 unsaturated alkyl, or an aryl comprising 6-10 carbon atoms in the ring skeleton thereof; wherein R2 is unsubstituted or substituted with one or more substituents selected from the group consisting of halogen, amino, hydroxyl, oxo (?O), thio, cyano and nitro; optionally a carrier, optionally an arthropod repellant, an
    Type: Application
    Filed: March 14, 2006
    Publication date: October 19, 2006
    Inventors: Charles Cantrell, Jerome Klun, Stephen Duke