Patents by Inventor Mark Elliot Durchholz

Mark Elliot Durchholz 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).

  • Method of purifying a dicarboxylic acid
    Patent number: 9248381
    Abstract: A process for purifying a dicarboxylic acid that is derived from the mixed oxidation products from an ozonization of a mixture containing an ethylenically unsaturated compound having between 6 to 24 carbons, the process includes distilling the mixed oxidation products to provide a first distillate, and a second distillate, where the second distillate includes the dicarboxylic acid and impurity acids, partitioning the second distillate between water and a organic solvent, separating the organic solvent layer from the water layer, lowering the temperature of the water layer to crystallize at least a portion of the dicarboxylic acid, separating the crystallized dicarboxylic acid solid, melting the crystallized dicarboxylic acid, and distilling the liquid dicarboxylic acid to provide a purified dicarboxylic acid.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: February 2, 2016
    Assignee: Emery Oleochemicals LLC
    Inventors: Thomas Chad Walker, Stephen W. Turner, Jay William Landwehr, Douglas da Silva Rosa, Mark Elliot Durchholz
  • METHOD OF PURIFYING A DICARBOXYLIC ACID
    Publication number: 20120197043
    Abstract: A process for purifying a dicarboxylic acid that is derived from the mixed oxidation products from an ozonization of a mixture containing an ethylenically unsaturated compound having between 6 to 24 carbons, the process includes distilling the mixed oxidation products to provide a first distillate, and a second distillate, where the second distillate includes the dicarboxylic acid and impurity acids, partitioning the second distillate between water and a organic solvent, separating the organic solvent layer from the water layer, lowering the temperature of the water layer to crystallize at least a portion of the dicarboxylic acid, separating the crystallized dicarboxylic acid solid, melting the crystallized dicarboxylic acid, and distilling the liquid dicarboxylic acid to provide a purified dicarboxylic acid.
    Type: Application
    Filed: January 26, 2012
    Publication date: August 2, 2012
    Applicant: EMERY OLEOCHEMICALS LLC
    Inventors: Thomas Chad Walker, Stephen W. Turner, Jay William Landwehr, Douglas da Silva Rosa, Mark Elliot Durchholz