Patents by Inventor Ann F. Johnson

Ann F. Johnson 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).

  • Proppant coating for heavy metal recovery
    Patent number: 10752830
    Abstract: A coated proppant includes a solid core proppant particle and a heavy metal recovery coating, including heavy metal recovery crystals embedded within a polymer resin matrix. A process for the manufacture of a coated proppant includes providing a solid core proppant particle, and forming on the solid core proppant particle, a heavy metal recovery coating including heavy metal recovery crystals embedded within a polymer resin matrix.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: August 25, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Kaoru Aou, Juan Carlos Medina, H. Robert Goltz, Sachit Goyal, Arjun Raghuraman, Fabio Aguirre Vargas, Avery L. Watkins, David A. Reuschle, Ann F. Johnson, Yasmin N. Srivastava
  • PROPPANT COATING FOR HEAVY METAL RECOVERY
    Publication number: 20180194992
    Abstract: A coated proppant includes a solid core proppant particle and a heavy metal recovery coating, including heavy metal recovery crystals embedded within a polymer resin matrix. A process for the manufacture of a coated proppant includes providing a solid core proppant particle, and forming on the solid core proppant particle, a heavy metal recovery coating including heavy metal recovery crystals embedded within a polymer resin matrix.
    Type: Application
    Filed: June 27, 2016
    Publication date: July 12, 2018
    Inventors: Kaoru Aou, Juan Carlos Medina, H. Robert Goltz, Sachit Goyal, Arjun Raghuraman, Fabio Aguirre Vargas, Avery L. Watkins, David A. Reuschle, Ann F. Johnson, Yasmin N. Srivastava