Patents by Inventor Won Keun CHOI

Won Keun CHOI 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).

  • Sulfur Dioxide-Based Inorganic Electrolyte Doped with Fluorine Compound, Method of Manufacturing the Same, and Secondary Battery Including the Same
    Publication number: 20240088432
    Abstract: An embodiment sulfur dioxide-based inorganic electrolyte is provided in which the sulfur dioxide-based inorganic electrolyte is represented by a chemical formula M·(A1·Cl(4-x)Fx)z·ySO2. In this formula, M is a first element selected from the group consisting of Li, Na, K, Ca, and Mg, A1 is a second element selected from the group consisting of Al, Fe, Ga, and Cu, x satisfies a first equation 0?x?4, y satisfies a second equation 0?y?6, and z satisfies a third equation 1?z?2.
    Type: Application
    Filed: April 12, 2023
    Publication date: March 14, 2024
    Inventors: Kyu Ju Kwak, Won Keun Kim, Eun Ji Kwon, Samuel Seo, Yeon Jong Oh, Kyoung Han Ryu, Dong Hyun Lee, Han Su Kim, Ji Whan Lee, Seong Hoon Choi, Seung Do Mun
  • STRETCHING APPARATUS FOR MANUFACTURING SEPARATOR AND METHOD OF MANUFACTURING SEPARATOR USING THE SAME
    Publication number: 20230207961
    Abstract: One aspect of the present invention provides a stretching apparatus for manufacturing a separator including a first stretching machine and a second stretching machine arranged in parallel with each other, in which the first stretching machine includes a plurality of first unit sections having different stretching ratios, and the second stretching machine includes a plurality of second unit sections having different stretching ratios, the overall stretching ratio by each of the first stretching machine and the second stretching machine is the same each other, and at least one stretching ratio of the first unit section and at least one stretching ratio of the second unit section are different from each other and a method of manufacturing a separator using the same.
    Type: Application
    Filed: July 1, 2022
    Publication date: June 29, 2023
    Applicants: W-SCOPE KOREA CO., LTD., W-SCOPE CHUNGJU PLANT CO., LTD.
    Inventors: Kyoung Sun RYU, Won Keun CHOI, Kwang Ho CHOI, Pyung Yong PARK, Byung Hyun KIM
  • METHOD OF MANUFACTURING A SEPARATOR AND A SEPARATOR MANUFACTURED USING THE SAME
    Publication number: 20230207959
    Abstract: One aspect of the present invention provides a method of manufacturing a separator including: (a) obtaining a laminate by laminating a first porous support and a second porous support; (b) forming a functional layer by applying a composition including a binder and a solvent on both sides of the laminate and drying the composition; and (c) dividing the laminate into two separators along an interface formed by the lamination, and a separator manufactured using the method.
    Type: Application
    Filed: July 1, 2022
    Publication date: June 29, 2023
    Applicants: W-SCOPE KOREA CO., LTD., W-SCOPE CHUNGJU PLANT CO., LTD.
    Inventors: Won Keun CHOI, Dae Bog PARK, Byung Tak JUNG, Byung Hyun KIM
  • Crosslinked polyolefin separator and method of manufacturing the same
    Patent number: 11557814
    Abstract: Disclosed are a separator that includes fibrils including a polyolefin; and bond structures generated by reacting at least some of a first radical formed on surfaces of the fibrils by a photoreactive material and a second radical formed in the photoreactive material, and a method of manufacturing the separator.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: January 17, 2023
    Assignees: W-SCOPE KOREA CO., LTD., W-SCOPE CHUNGJU PLANT CO., LTD.
    Inventors: Byung Hyun Kim, Hee Min Cho, Pyung Yong Park, Gi Won Yoo, Yeong Hoon Choi, Won Keun Choi
  • CROSSLINKED POLYOLEFIN SEPARATOR AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20200343506
    Abstract: Disclosed are a separator that includes fibrils including a polyolefin; and bond structures generated by reacting at least some of a first radical formed on surfaces of the fibrils by a photoreactive material and a second radical formed in the photoreactive material, and a method of manufacturing the separator.
    Type: Application
    Filed: January 10, 2020
    Publication date: October 29, 2020
    Applicants: W-SCOPE KOREA CO., LTD., W-SCOPE CHUNGJU PLANT CO., LTD.
    Inventors: Byung Hyun KIM, Hee Min CHO, Pyung Yong PARK, Gi Won YOO, Yeong Hoon CHOI, Won Keun CHOI