Patents by Inventor Mark L. McKoy

Mark L. McKoy 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).

  • Organic acid solution having at least one ionic salt and at least one organic acid which is used for rare earth extraction
    Patent number: 11814700
    Abstract: One or more embodiments relates to a process for extracting Rare Earth Elements (REEs) from REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal. In at least one embodiment the process includes contacting the REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal with an Organic Acid Solution (OAS) comprising at least one organic acid and at least one ionic salt at a predetermined ambient temperature and predetermined pH; and separating the REE from the REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal, forming REE+Yttrium (REY) concentrate.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: November 14, 2023
    Assignee: United States Department of Energy
    Inventors: Circe Verba, Mark L. McKoy, Thomas J. Tarka, Scott Montross, Jonathan Yang
  • Process for Extraction of Recoverable Rare Earth Elements (REE) Using Organic Acids and Chelating Compounds
    Publication number: 20230042346
    Abstract: One or more embodiments relates to a process for extracting Rare Earth Elements (REEs) from REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal. In at least one embodiment the process includes contacting the REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal with an Organic Acid Solution (OAS) comprising at least one organic acid and at least one ionic salt at a predetermined ambient temperature and predetermined pH; and separating the REE from the REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal, forming REE+Yttrium (REY) concentrate.
    Type: Application
    Filed: September 29, 2022
    Publication date: February 9, 2023
    Inventors: Circe Verba, Mark L. McKoy, Thomas J. Tarka, Scott Montross, Jonathan Yang
  • Process for Extraction of Recoverable Rare Earth Elements (REE) Using Organic Acids and Chelating Compounds
    Publication number: 20220074019
    Abstract: One or more embodiments relates to a process for extracting Rare Earth Elements (REEs) from REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal. In at least one embodiment the process includes contacting the REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal with an Organic Acid Solution (OAS) comprising at least one organic acid and at least one ionic salt at a predetermined ambient temperature and predetermined pH; and separating the REE from the REE-bearing underclays, claystones, shales, coal-mining waste, and waste coal, forming REE+Yttrium (REY) concentrate.
    Type: Application
    Filed: September 4, 2020
    Publication date: March 10, 2022
    Inventors: Circe Verba, Mark L. McKoy, Thomas J. Tarka, Scott Montross, Jonathan Yang