Patents by Inventor Gwang Seop LEE

Gwang Seop LEE 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 inhibiting extractant degradation by controlling extractive capacity and preventing direct degradation
    Patent number: 11274047
    Abstract: Provided is a method for inhibiting extractant degradation comprising preparing step, extracting step and scrubbing step, the method including: (a) the preparing step of a DSX solvent by adjusting the extractant concentration of the DSX solvent to a specific range; (b) the extracting step of metal included in the feed solution by adjusting the ratio of the organic (solvent) and an aqueous (solution) as a feed solution; (c) the scrubbing step of adjusting the zinc concentration of the solution using zinc sulfate; and (d) stripping step.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: March 15, 2022
    Assignee: KOREA RESOURCES CORPORATION
    Inventors: Jeon Woong An, Youn Kyu Yi, Gwang Seop Lee, Young Hun Kim
  • METHOD OF INHIBITING EXTRACTANT DEGRADATION BY CONTROLLING EXTRACTIVE CAPACITY AND PREVENTING DIRECT DEGRADATION
    Publication number: 20210024369
    Abstract: Provided is a method for inhibiting extractant degradation comprising preparing step, extracting step and scrubbing step, the method including: (a) the preparing step of a DSX solvent by adjusting the extractant concentration of the DSX solvent to a specific range; (b) the extracting step of metal included in the feed solution by adjusting the ratio of the organic (solvent) and an aqueous (solution) as a feed solution; (c) the scrubbing step of adjusting the zinc concentration of the solution using zinc sulfate; and (d) stripping step.
    Type: Application
    Filed: July 26, 2019
    Publication date: January 28, 2021
    Inventors: Jeon Woong AN, Youn Kyu YI, Gwang Seop LEE, Young Hun KIM