Patents by Inventor Daniel Patrick Green

Daniel Patrick Green 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).

  • Oxidation of alkyl aromatic compounds to aromatic acids in an aqueous medium
    Patent number: 6759550
    Abstract: The present invention pertains to an improved method of oxidizing substituted aromatic compounds (such as p xylene) to their corresponding aromatic acids (such as terephthalic acid). The improvement involves carrying out the oxidation reaction in an aqueous medium, wherein the aqueous medium contains at least 30 percent water, preferably up to 30 percent surfactant and preferably a low molecular weight material containing a hydrophilic end group as a co-surfactant. The reaction is carried out at a pH of less than 3.0.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: July 6, 2004
    Assignee: The Dow Chemical Company
    Inventors: John Klier, Christopher J. Tucker, Thomas H. Kalantar, Kenneth A. Burdett, Daniel Patrick Green, Luciano Piras, Sergio Schena, Guo-shuh John Lee
  • High internal phase emulsions (HIPEs) and foams made therefrom
    Patent number: 6303834
    Abstract: High internal phase emulsions (HIPEs), porous polymeric materials made therefrom, and methods for making and using the same. Specific embodiments of the invention include water-in-oil high internal phase emulsions having at least 70 volume percent of an internal aqueous phase and less than 30 volume percent of an external oil phase wherein the oil phase comprises a vinyl polymerizable monomer and a surfactant effective to stabilize the emulsion. The subject surfactants are oil soluble and preferably include an oxyalkylene component.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: October 16, 2001
    Assignee: The Dow Chemical Company
    Inventors: Steven W. Mork, Gene D. Rose, Daniel Patrick Green
  • High internal phase emulsions (HIPEs) and foams made therefrom
    Patent number: 6147131
    Abstract: High internal phase emulsions (HIPEs), porous polymeric materials made therefrom, and methods for making and using the same. Specific embodiments of the invention include water-in-oil high internal phase emulsions having at least 70 volume percent of an internal aqueous phase and less than 30 volume percent of an external oil phase wherein the oil phase comprises a vinyl polymerizable monomer and a surfactant effective to stabilize the emulsion. The subject surfactants are oil soluble and preferably include an oxyalkylene component.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: November 14, 2000
    Assignee: The Dow Chemical Company
    Inventors: Steven W. Mork, Daniel Patrick Green, Gene D. Rose