Patents by Inventor Ephrem Lemlem Gebrehiwot

Ephrem Lemlem Gebrehiwot 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).

  • ACID MIST SUPPRESSION IN COPPER ELECTROWINNING
    Publication number: 20240052514
    Abstract: A method of acid mist suppression in copper electrowinning is described. In various embodiments, at least one liquid licorice root extract, powdered licorice root extract, or reconstituted licorice extract is added in an amount sufficient to the acidic electrolyte solution of the copper electrowinning process to suppress acid mist from the acidic electrolyte solution during the copper electrowinning process. In various embodiments, combinations of licorice extract and surfactant show synergies in acid mist suppression during copper electrowinning.
    Type: Application
    Filed: October 23, 2023
    Publication date: February 15, 2024
    Applicant: FREEPORT MINERALS CORPORATION
    Inventors: Scot Philip Sandoval, Stanberg Lee Tallman, William Duane Sanders, Ephrem Lemlem Gebrehiwot, Aron Tyab
  • Acid mist suppression in copper electrowinning
    Patent number: 11807952
    Abstract: A method of acid mist suppression in copper electrowinning is described. In various embodiments, at least one liquid licorice root extract, powdered licorice root extract, or reconstituted licorice extract is added in an amount sufficient to the acidic electrolyte solution of the copper electrowinning process to suppress acid mist from the acidic electrolyte solution during the copper electrowinning process. In various embodiments, combinations of licorice extract and surfactant show synergies in acid mist suppression during copper electrowinning.
    Type: Grant
    Filed: October 7, 2022
    Date of Patent: November 7, 2023
    Assignee: FREEPORT MINERALS CORPORATION
    Inventors: Scot Philip Sandoval, Stanberg Lee Tallman, William Duane Sanders, Ephrem Lemlem Gebrehiwot, Aron Tyab
  • ACID MIST SUPPRESSION IN COPPER ELECTROWINNING
    Publication number: 20230111432
    Abstract: A method of acid mist suppression in copper electrowinning is described. In various embodiments, at least one liquid licorice root extract, powdered licorice root extract, or reconstituted licorice extract is added in an amount sufficient to the acidic electrolyte solution of the copper electrowinning process to suppress acid mist from the acidic electrolyte solution during the copper electrowinning process. In various embodiments, combinations of licorice extract and surfactant show synergies in acid mist suppression during copper electrowinning.
    Type: Application
    Filed: October 7, 2022
    Publication date: April 13, 2023
    Applicant: FREEPORT MINERALS CORPORATION
    Inventors: Scot Philip Sandoval, Stanberg Lee Tallman, William Duane Sanders, Ephrem Lemlem Gebrehiwot, Aron Tyab
  • ACID MIST SUPPRESSION IN COPPER ELECTROWINNING
    Publication number: 20230110076
    Abstract: A method of acid mist suppression in copper electrowinning is described. In various embodiments, at least one liquid licorice root extract, powdered licorice root extract, or reconstituted licorice extract is added in an amount sufficient to the acidic electrolyte solution of the copper electrowinning process to suppress acid mist from the acidic electrolyte solution during the copper electrowinning process. In various embodiments, combinations of licorice extract and surfactant show synergies in acid mist suppression during copper electrowinning.
    Type: Application
    Filed: October 7, 2022
    Publication date: April 13, 2023
    Applicant: FREEPORT MINERALS CORPORATION
    Inventors: Scot Philip Sandoval, Stanberg Lee Tallman, William Duane Sanders, Ephrem Lemlem Gebrehiwot, Aron Tyab