Patents by Inventor Robin W. Dexter

Robin W. Dexter 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).

  • Patent number: 11006630
    Abstract: The present invention is directed to an insecticidal water based suspension concentrate formulation comprising a water-soluble insecticide selected from the group consisting of N-cyanomethyl-4-(trifluoromethyl)nicotinamide and (EZ)-1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidineamine and at least one water-soluble salt selected from the group consisting of magnesium sulfate (hydrated and anhydrous forms) and sodium sulfate, wherein the water-soluble insecticide is present in an insecticidally effective amount and methods of use.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: May 18, 2021
    Assignee: FMC Corporation
    Inventors: Hong Liu, Robin W. Dexter
  • Publication number: 20180206496
    Abstract: The present invention is directed to an insecticidal water based suspension concentrate formulation comprising a water-soluble insecticide selected from the group consisting of N-cyanomethyl-4-(trifluoromethyl)nicotinamide and (EZ)-1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidineamine and at least one water-soluble salt selected from the group consisting of magnesium sulfate (hydrated and anhydrous forms) and sodium sulfate, wherein the water-soluble insecticide is present in an insecticidally effective amount and methods of use.
    Type: Application
    Filed: March 19, 2018
    Publication date: July 26, 2018
    Inventors: Hong Liu, Robin W. Dexter
  • Patent number: 9949481
    Abstract: The present invention is directed to an insecticidal water based suspension concentrate formulation comprising a water-soluble insecticide selected from the group consisting of N-cyanomethyl-4-(trifluoromethyl)nicotinamide and (EZ)-1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidineamine and at least one water-soluble salt selected from the group consisting of magnesium sulfate (hydrated and anhydrous forms) and sodium sulfate, wherein the water-soluble insecticide is present in an insecticidally effective amount and methods of use.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: April 24, 2018
    Assignee: FMC Corporation
    Inventors: Hong Liu, Robin W. Dexter
  • Publication number: 20160128330
    Abstract: The present invention is directed to an insecticidal water based suspension concentrate formulation comprising a water-soluble insecticide selected from the group consisting of N-cyanomethyl-4-(trifluoromethyl)nicotinamide and (EZ)-1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidineamine and at least one water-soluble salt selected from the group consisting of magnesium sulfate (hydrated and anhydrous forms) and sodium sulfate, wherein the water-soluble insecticide is present in an insecticidally effective amount and methods of use.
    Type: Application
    Filed: January 19, 2016
    Publication date: May 12, 2016
    Inventors: Hong Liu, Robin W. Dexter
  • Patent number: 9253981
    Abstract: The present invention is directed to an insecticidal water based suspension concentrate formulation comprising a water-soluble insecticide selected from the group consisting of N-cyanomethyl-4-(trifluoromethyl)nicotinamide and (EZ)-1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidineamine and at least one water-soluble salt selected from the group consisting of magnesium sulfate (hydrated and anhydrous forms) and sodium sulfate, wherein the water-soluble insecticide is present in an insecticidally effective amount and methods of use.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: February 9, 2016
    Assignee: FMC Corporation
    Inventors: Robin W. Dexter, Hong Liu
  • Patent number: 8383548
    Abstract: The present invention is directed to a composition comprising i) a microencapsulated pesticide, ii) a dispersant selected from the group consisting of a lignin, b) a lignosulfonate salt and c) a lignosulfonate salt combined with the sodium salt of substituted naphthalene sulfonate formaldehyde polymer, iii) a salt selected from the group consisting of magnesium sulfate, sodium chloride, sodium nitrate and calcium chloride, and iv) a non-encapsulated pesticide. The present invention is also directed to methods of making and using the compositions of the present invention.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: February 26, 2013
    Assignee: FMC Corporation
    Inventors: Robin W. Dexter, Hong Liu
  • Publication number: 20100234225
    Abstract: The present invention is directed to a composition comprising i) a microencapsulated pesticide, ii) a dispersant selected from the group consisting of a lignin, b) a lignosulfonate salt and c) a lignosulfonate salt combined with the sodium salt of substituted naphthalene sulfonate formaldehyde polymer, iii) a salt selected from the group consisting of magnesium sulfate, sodium chloride, sodium nitrate and calcium chloride, and iv) a non-encapsulated pesticide. The present invention is also directed to methods of making and using the compositions of the present invention.
    Type: Application
    Filed: February 21, 2007
    Publication date: September 16, 2010
    Applicant: FMC Corporation
    Inventors: Robin W. Dexter, Hong Liu
  • Publication number: 20100197739
    Abstract: The present invention is directed to an insecticidal water based suspension concentrate formulation comprising a water-soluble insecticide selected from the group consisting of N-cyanomethyl-4-(trifluoromethyl)nicotinamide and (EZ)-1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidineamine and at least one water-soluble salt selected from the group consisting of magnesium sulfate (hydrated and anhydrous forms) and sodium sulfate, wherein the water-soluble insecticide is present in an insecticidally effective amount and methods of use.
    Type: Application
    Filed: October 16, 2007
    Publication date: August 5, 2010
    Applicant: FMC CORPORATION
    Inventors: Robin W. Dexter, Hong Liu
  • Patent number: 6214771
    Abstract: An aqueous spray composition comprising about 0.0001 to 1 wt/wt % of a water-soluble poly(ethylene oxide) having a molecular weight greater than about 5×105 Daltons and at least about 0.05 wt/wt % of a surfactant selected from the group consisting of a sulfonate surfactant and a sulfate surfactant. Said compositions exhibit reduced spray drift. Said compositions are employed in methods for increasing the median diameter of spray droplets and have utility in agricultural spray applications.
    Type: Grant
    Filed: October 29, 1996
    Date of Patent: April 10, 2001
    Assignees: American Cyanamid Company, Five Giralda Farms
    Inventor: Robin W. Dexter
  • Patent number: 5397766
    Abstract: There are provided compositions comprising a concentrated amount of an herbicidally active agent, or combination of agents, in a solid state suspended in a water immiscible solvent containing an anionic surfactant and a nonionic surfactant and optionally containing an antifoam agent and a suspending or thickening agent. Upon dilution with hard or soft water, said compositions readily form sprayable herbicidal emulsions.
    Type: Grant
    Filed: August 31, 1993
    Date of Patent: March 14, 1995
    Assignee: American Cyanamid Company
    Inventor: Robin W. Dexter
  • Patent number: 5268352
    Abstract: There are provided compositions comprising concentrated amount of an herbicidally active agent, or combination of agents, in a solid state suspended in a water immiscible solvent containing an anionic surfactant and a nonionic surfactant and optionally containing an antifoam agent and a suspending or thickening agent. Upon dilution with hard or soft water, said compositions readily form sprayable herbicidal emulsions.
    Type: Grant
    Filed: November 25, 1991
    Date of Patent: December 7, 1993
    Assignee: American Cyanamid Company
    Inventor: Robin W. Dexter
  • Patent number: 4929687
    Abstract: Novel N-chloroamide polymers and a process for the production thereof are disclosed.
    Type: Grant
    Filed: May 5, 1986
    Date of Patent: May 29, 1990
    Assignee: American Cyanamid Company
    Inventors: Peter A. Jarovitzky, Yun-Lung Fu, Robin W. Dexter
  • Patent number: 4785055
    Abstract: Aqueous solutions of polyacrylamides are acidified and then reacted with halogen gas or hypohalites to provide N-halogenated polymers. The product of the process are good wet strength additives for paper made from aqueous pulps of paper making fibers.
    Type: Grant
    Filed: June 23, 1987
    Date of Patent: November 15, 1988
    Assignee: American Cyanamid Company
    Inventors: Robin W. Dexter, Peter A. Jarovitzky, Yun-Lung Fu
  • Patent number: 4754011
    Abstract: A method of making a copolymer of meta- or para-isopropenyl- .alpha.,.alpha.-dimethylbenzylisocyanate and at least one other ethylenically unsaturated comonomer polymerizable therewith, comprising polymerizing the meta- or para-isopropenyl- .alpha.,.alpha.-dimethylbenzylisocyanate and at least one other ethylenically unsaturated comonomer in an aqueous emulsion in the presence of a free-radical polymerization initiator and a chain transfer agent to control molecular weight.Also disclosed are methods of breaking the aqueous emulsion after polymerization is completed by either adding a salt, e.g., aluminum sulfate, or by freezing the emulsion followed by thawing to yield the copolymer as a mechanically separable solid phase of a two-phase liquid-solid mixture.
    Type: Grant
    Filed: December 21, 1983
    Date of Patent: June 28, 1988
    Assignee: American Cyanamid Company
    Inventors: Robin W. Dexter, Peter S. Forgione, John A. Sedlak
  • Patent number: 4518511
    Abstract: There is provided a method for treating a subsurface oil field formation penetrated by an oil-producing well bore comprising: injecting into said formation an emulsified, oil soluble polymeric composition of a polymer.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: May 21, 1985
    Assignee: American Cyanamid Company
    Inventors: Ernest D. Kaufman, Robin W. Dexter
  • Patent number: 4145495
    Abstract: Addition of a chelating agent and an chelatable inert cation species overcomes the inhibiting effects of impurity chelatable cation species present in an aqueous polymerization medium containing a redox system comprising an oxidizing agent and a chelatable metal reducing agent.
    Type: Grant
    Filed: May 24, 1978
    Date of Patent: March 20, 1979
    Assignee: American Cyanamid Company
    Inventors: Peter M. Robinson, Michael W. C. Coville, Robin W. Dexter