Patents by Inventor Emily C. Hart

Emily C. Hart 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).

  • Invertible water-in-oil latices and methods of use
    Patent number: 9822297
    Abstract: Invertible latices suitable for use in enhanced oil recovery are formed by adding a first inversion surfactant and a second inversion surfactant to a water-in-oil latex comprising about 15 wt % to 50 wt % of a water soluble polymer having a net ionic charge. The first inversion surfactant has a hydrophilic/lipophilic balance of about 15 to 35 and an ionic charge that is the opposite of the net ionic charge of the polymer. The second inversion surfactant has a hydrophilic/lipophilic balance of between about 8 and 20. The invertible latices are diluted in a single step to provide dilute latices having 10,000 ppm or less polymer solids.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: November 21, 2017
    Assignee: Ecolab USA Inc.
    Inventors: Kerry C. Brinkman, Emily C. Hart
  • INVERTIBLE WATER-IN-OIL LATICES AND METHODS OF USE
    Publication number: 20160333252
    Abstract: Invertible latices suitable for use in enhanced oil recovery are formed by adding a first inversion surfactant and a second inversion surfactant to a water-in-oil latex comprising about 15 wt % to 50 wt % of a water soluble polymer having a net ionic charge. The first inversion surfactant has a hydrophilic/lipophilic balance of about 15 to 35 and an ionic charge that is the opposite of the net ionic charge of the polymer. The second inversion surfactant has a hydrophilic/lipophilic balance of between about 8 and 20. The invertible latices are diluted in a single step to provide dilute latices having 10,000 ppm or less polymer solids.
    Type: Application
    Filed: May 12, 2016
    Publication date: November 17, 2016
    Inventors: Kerry C. Brinkman, Emily C. Hart