Patents Represented by Attorney Robert Chang

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  • Synergistic herbicidal composition containing penoxsulam and oxyfluorfen
    Patent number: 8338336
    Abstract: Penoxsulam and oxyfluorfen synergistically control weeds in crops, especially perennial tree and vine crops, rice, cereal and grain crops, pastures, rangelands, IVM and turf. Such compositions provide improved pre-emergence residual and post-emergence burndown with residual herbicidal weed control.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: December 25, 2012
    Assignee: Dow AgroSciences, LLC
    Inventors: Christian Jousseaume, Salvador Carrasco Campos, Richard K. Mann, Monica Sorribas Amela
  • Process for the preparation of 5-substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines
    Patent number: 8338596
    Abstract: 5-Substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines are manufactured from 2-substituted-4-amino-5-methoxypyrimidines in a process that avoids hydrazine and cyanogen halide.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: December 25, 2012
    Assignee: Dow Agrosciences LLC
    Inventors: Craig Bott, Christopher T. Hamilton, Gary Alan Roth
  • Synergistic herbicidal composition containing fluroxypyr and quinclorac
    Patent number: 8338334
    Abstract: An herbicidal synergistic mixture of fluroxypyr and quinclorac provides improved post-emergence weed control in rice, cereal and grain crops, pastures, rangelands, IVM and turf.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: December 25, 2012
    Assignee: Dow AgroSciences, LLC
    Inventors: Richard K. Mann, Ändrea Christine McVeigh-Nelson
  • Synergistic herbicidal composition containing fluroxypyr and penoxsulam, halosulfuron-methyl, imazamox or imazethapyr
    Patent number: 8338335
    Abstract: An herbicidal synergistic composition containing (a) fluoroxypyr and (b) an ALS inhibitor herbicide, in which the ALS inhibitor herbicide is penoxsulam, halosulfuron-methyl, imazamox or imazethapyr, provides improved post-emergence weed control in rice, cereal and grain crops, pastures, rangelands, IVM and turf.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: December 25, 2012
    Assignee: Dow Agrosciences, LLC
    Inventors: Richard K. Mann, Monte R. Weimer, Ändrea C. McVeigh-Nelson, Andrew T. Ellis
  • Stable emulsifiable concentrates containing a first herbicidal carboxylic acid salt and a second herbicidal carboxylic acid ester
    Patent number: 8309491
    Abstract: Stable emulsifiable concentrates containing a first herbicidal carboxylic acid in the salt form and a second herbicidal carboxylic acid in the ester form are prepared by using a tertiary amine to prepare the salt of the first herbicidal carboxylic acid and by using an alcohol which is the same as the ester portion of the second carboxylic acid herbicide as the solvent.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: November 13, 2012
    Assignee: Dow AgroSciences, LLC
    Inventors: Mei Li, Holger Tank, Melissa G. Olds, Derek J. Hopkins, Robert M. Buttimor
  • Stabilized agricultural oil dispersions
    Patent number: 8298990
    Abstract: Agrochemical oil dispersions are stabilized to particle sedimentation by use of a combination of a clay or silica type rheology modifier and a polymer or oligomer capable of hydrogen bonding.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: October 30, 2012
    Assignee: Dow AgroSciences, LLC.
    Inventors: Dan Wu, Kuide Qin, Franklin N. Keeney, Mei Li
  • 2-(poly-substituted aryl)-6-amino-5-halo-4-pyrimidinecarboxylic acids and their use as herbicides
    Patent number: 8288318
    Abstract: 6-Amino-5-halo-4-pyrimidinecarboxylic acids having poly-substituted aryl substituents in the 2-position, and their amine and acid derivatives, are potent herbicides demonstrating a broad spectrum of weed control.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: October 16, 2012
    Assignee: Dow AgroSciences, LLC.
    Inventors: Jeffrey B. Epp, Paul R. Schmitzer, James M. Ruiz, Terry W. Balko, Thomas L. Siddall, Carla N. Yerkes
  • Safening penoxsulam herbicide injury in water-seeded, direct-seeded and transplanted paddy rice
    Patent number: 8268747
    Abstract: Clomazone safens rice from the slight amounts of damage caused by penoxsulam at concentrations required to adequately control undesirable vegetation.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: September 18, 2012
    Assignee: Dow AgroSciences, LLC.
    Inventors: Richard K. Mann, Deborah G. Shatley
  • 2-substituted-6-amino-5-alkyl, alkenyl or alkynyl-4-pyrimidinecarboxylic acids and 6-substituted-4-amino-3-alkyl, alkenyl or alkynyl picolinic aids and their use as herbicides
    Patent number: 8268753
    Abstract: 6-Amino-4-pyrimidinecarboxylic acids having alkyl, alkenyl or alkynyl substituents in the 5-position and 4-aminopicolinic acids having alkyl, alkenyl or alkynyl substituents in the 3-position, and their amine and acid derivatives, are potent herbicides demonstrating a broad spectrum of weed control.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: September 18, 2012
    Assignee: Dow AgroSciences LLC.
    Inventors: Jeffrey B. Epp, Paul R. Schmitzer, Terry W. Balko, James M. Ruiz, Carla N. Yerkes, Thomas L. Siddall, William C. Lo
  • Process for the preparation of 6-(aryl)-4-aminopicolinates
    Patent number: 8252938
    Abstract: 3-Halo-6-(aryl)-4-iminotetrahydropicolinic acid esters are heated with polar solvents to prepare 6-(aryl)-4-aminopicolinates.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: August 28, 2012
    Assignee: Dow AgroSciences, LLC.
    Inventors: James M. Renga, Gregory T. Whiteker, Kim E. Arndt, Christian T. Lowe