Patents by Inventor Daniel Joseph Gardner

Daniel Joseph Gardner 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).

  • Extracting rare-earth elements from a gangue heavy fraction
    Patent number: 12179214
    Abstract: Described herein are technologies for concentrating rare-earth elements from a heavy fraction of grit in gangue produced in kaolin mining. In some examples, grit is separated as a non-clay fraction of gangue produced in a kaolin mining operation. The grit is separated into a heavy mineral grit sub-fraction and a light mineral grit sub-fraction. Rare-earth elements, particularly heavy rare-earth elements, are thereafter extracted from the heavy mineral grit sub-fraction using various extraction technologies.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: December 31, 2024
    Assignees: Georgia State University Research Foundation, Thiele Kaolin Company
    Inventors: W. Crawford Elliott, Daniel Joseph Gardner, Ed Riley, Prakash Malla
  • EXTRACTING RARE-EARTH ELEMENTS FROM A GANGUE HEAVY FRACTION
    Publication number: 20210001350
    Abstract: Described herein are technologies for concentrating rare-earth elements from a heavy fraction of grit in gangue produced in kaolin mining. In some examples, grit is separated as a non-clay fraction of gangue produced in a kaolin mining operation. The grit is separated into a heavy mineral grit sub-fraction and a light mineral grit sub-fraction. Rare-earth elements, particularly heavy rare-earth elements, are thereafter extracted from the heavy mineral grit sub-fraction using various extraction technologies.
    Type: Application
    Filed: June 17, 2020
    Publication date: January 7, 2021
    Inventors: W. Crawford Elliott, Daniel Joseph Gardner, Ed Riley, Prakash Malla
  • Extracting rare-earth elements from a gangue heavy fraction
    Patent number: 10688501
    Abstract: Described herein are technologies for concentrating rare-earth elements from a heavy fraction of grit in gangue produced in kaolin mining. In some examples, grit is separated as a non-clay fraction of gangue produced in a kaolin mining operation. The grit is separated into a heavy mineral grit sub-fraction and a light mineral grit sub-fraction. Rare-earth elements, particularly heavy rare-earth elements, are thereafter extracted from the heavy mineral grit sub-fraction using various extraction technologies.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: June 23, 2020
    Assignees: Georgia State University Research Foundation, Thiele Kaolin Company
    Inventors: W. Crawford Elliott, Daniel Joseph Gardner, Prakash Malla, Ed Riley
  • EXTRACTING RARE-EARTH ELEMENTS FROM A GANGUE HEAVY FRACTION
    Publication number: 20190247860
    Abstract: Described herein are technologies for concentrating rare-earth elements from a heavy fraction of grit in gangue produced in kaolin mining. In some examples, grit is separated as a non-clay fraction of gangue produced in a kaolin mining operation. The grit is separated into a heavy mineral grit sub-fraction and a light mineral grit sub-fraction. Rare-earth elements, particularly heavy rare-earth elements, are thereafter extracted from the heavy mineral grit sub-fraction using various extraction technologies.
    Type: Application
    Filed: October 31, 2017
    Publication date: August 15, 2019
    Inventors: W. Crawford Elliott, Daniel Joseph Gardner, Prakash Malla, Ed Riley