Patents by Inventor Whan-Tae Kim

Whan-Tae Kim 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).

  • Method for extracting rare earth material from monazite
    Patent number: 8486354
    Abstract: A method for extracting rare earth elements from monazite is disclosed. The method includes milling a mixture of monazite including phosphates and rare earth elements and sodium hydroxides inside a mill containing a plurality of balls to form powder by colliding the mixture into balls with each other, converting the mixture into rare earth hydroxides and sodium phosphates through the reaction occurring in the process of repeated collision, and extracting rare earth elements from the powder.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: July 16, 2013
    Assignee: Korea Institute of Geoscience and Mineral Resources (KIGAM)
    Inventors: Hee-Young Shin, Whan-Tae Kim, In-Kook Bae, Soo-Chun Chae
  • METHOD FOR EXTRACTING RARE EARTH MATERIAL FROM MONAZITE
    Publication number: 20120219477
    Abstract: A method for extracting rare earth elements from monazite is disclosed. The method includes milling a mixture of monazite including phosphates and rare earth elements and sodium hydroxides inside a mill containing a plurality of balls to form powder by colliding the mixture into balls with each other, converting the mixture into rare earth hydroxides and sodium phosphates through the reaction occurring in the process of repeated collision, and extracting rare earth elements from the powder.
    Type: Application
    Filed: November 26, 2009
    Publication date: August 30, 2012
    Applicant: Korea Institute of Geoscience and Mineral Resources (KIGAM)
    Inventors: Hee-Young Shin, Whan-Tae Kim, In-Kook Bae, Soo-Chun Chae