Patents by Inventor Da-Mo-A KIM

Da-Mo-A 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 of producing lithium hydroxide from lithium concentrate through sodium sulfate addition and roasting
    Patent number: 12247267
    Abstract: The present invention relates to a method of producing lithium hydroxide from a lithium concentrate through sodium sulfate addition and roasting. The method effectively recover lithium ions from the lithium concentrate, minimizes production of byproducts, and produces high-purity lithium hydroxide. By mixing a concentrate containing lithium with sodium sulfate (Na2SO4), roasting the concentrate, and leaching the roasted concentrate with water, it is possible to recover lithium ions at a high recovery rate and to produce high-purity lithium hydroxide monohydrate.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: March 11, 2025
    Assignee: ECOPRO INNOVATION CO., LTD.
    Inventors: Min-Woo Lee, Suk-Joon Park, Myung Gyu Lee, Kwang Seok Lee, Jong Sun Park, Da-Mo-A Kim
  • METHOD OF PRODUCING LITHIUM HYDROXIDE FROM LITHIUM CONCENTRATE THROUGH SODIUM SULFATE ADDITION AND ROASTING
    Publication number: 20220017991
    Abstract: The present invention relates to a method of producing lithium hydroxide from a lithium concentrate through sodium sulfate addition and roasting. The method effectively recover lithium ions from the lithium concentrate, minimizes production of byproducts, and produces high-purity lithium hydroxide. By mixing a concentrate containing lithium with sodium sulfate (Na2SO4), roasting the concentrate, and leaching the roasted concentrate with water, it is possible to recover lithium ions at a high recovery rate and to produce high-purity lithium hydroxide monohydrate.
    Type: Application
    Filed: November 4, 2019
    Publication date: January 20, 2022
    Applicant: ECOPRO INNOVATION CO., LTD.
    Inventors: Min-Woo LEE, Suk-Joon PARK, Myung Gyu LEE, Kwang Seok LEE, Jong Sun PARK, Da-Mo-A KIM