Patents by Inventor Ji Won Min

Ji Won Min 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).

  • Publication number: 20260206474
    Abstract: A window member comprises a cover window, an optical member disposed on the cover window, and a functional member disposed on the optical member. The optical member comprises a first refractive layer disposed on the cover window, and at least two groups disposed on the first refractive layer. Each of the at least two groups comprises a second refractive layer and a third refractive layer. The second refractive layer and the third refractive layer have different refractive indices from each other. The first refractive layer has a first refractive index between a second refractive index of the second refractive layer and a third refractive index of the third refractive layer. The first refractive layer contains at least silicon.
    Type: Application
    Filed: August 28, 2025
    Publication date: July 16, 2026
    Inventors: Hyun Seung SEO, Seung KIM, Seung Ho KIM, Ji Won MIN, Seong Jin HWANG
  • Publication number: 20240062913
    Abstract: Disclosed herein are a method and system for predicting an occurrence of acute kidney injury. A method of predicting an occurrence of acute kidney injury, according to some embodiments of the present disclosure, may train a model for predicting a risk of an occurrence of postoperative acute kidney injury using a dataset of a plurality of patients, and accurately and early predict the risk of an occurrence of postoperative acute kidney injury for a specific patient using the trained model.
    Type: Application
    Filed: August 16, 2023
    Publication date: February 22, 2024
    Applicant: THE CATHOLIC UNIVERSITY OF KOREA INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Hye Eun YOON, Ji Won MIN
  • Patent number: 11735709
    Abstract: Provided is a positive electrode for a lithium secondary battery, the positive electrode including a positive electrode mixture layer on a positive electrode current collector, wherein the positive electrode mixture layer includes a positive electrode active material and a lithium ion additive, the lithium ion additive is a lithium ion conductive ceramic material represented by Formula 1 below, and the lithium ion conductive ceramic material has a structure in which lithium ions are additionally inserted into vacancy sites of a NASICON-type (Na super ionic conductors-type) structure. Li1+x1+y1M12?x1M2x1(PO4)3??[Formula 1] In Formula 1, M1 is at least one of Ti and Ge, M2 is one or more selected from the group consisting Al, Cr, Ga, Fe, Sn, In, Lu, Y, and La, and 0<x1?0.3, and 1.7?y1?2.0.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: August 22, 2023
    Inventors: Ji Won Min, Seok Koo Kim, Youngsik Kim, Janis Doelle, Seongwoo Heo, Youngjun Lim
  • Patent number: 11545659
    Abstract: A negative electrode for a lithium secondary battery, where the negative electrode includes a negative electrode current collector, a negative electrode active material layer, a lithium layer that is positioned between the negative electrode current collector and the negative electrode active material layer, and a primer layer that is positioned between the negative electrode current collector and the lithium layer, and a manufacturing method thereof. This results in a simple method and a negative electrode with high capacity characteristics.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: January 3, 2023
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Yeon Suk Hong, Seok Koo Kim, Sun Kyu Kim, Ji Won Min
  • Publication number: 20220399613
    Abstract: A separator for a secondary battery including a polyolefin and a separator body having a porous structure. The separator body has a difference in porosity along a thickness direction. It is possible to improve the problem of imbalance in ionic conductivity caused by differences in thickness and electrical conductivity between a positive electrode and a negative electrode.
    Type: Application
    Filed: September 2, 2020
    Publication date: December 15, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventor: Ji Won MIN
  • Publication number: 20220131122
    Abstract: The present invention relates to a metal thin film for an electrode current collector, comprising taping regions, and a method for manufacturing an electrode using same and can prevent a metal thin film from curling or folding in the process of forming electrode mixture layers on either side of the metal thin film.
    Type: Application
    Filed: January 6, 2021
    Publication date: April 28, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Ji Won MIN, Sun Kyu KIM
  • Patent number: 11043663
    Abstract: A method of manufacturing a high loading electrode, which prevents the phenomenon of the binder being lifted, does not cause drying of the electrode slurry, and does not cause damage of the electrode layer and reduction of the electrode strength at the corners in the punching is provided. The method of manufacturing the high loading electrode includes applying an electrode slurry on a release film to thereby produce an electrode layer having the release film attached thereto, punching the electrode layer having the release film attached thereto to provide a plurality of punched electrode layers, each punched electrode layer having a size of a unit electrode, separating and removing the release film from the punched electrode layers, and stacking and rolling at least two punched electrode layers on a current collector.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: June 22, 2021
    Inventors: Ji Won Min, Seok Koo Kim, Yong Jun Kim, Janis Doelle, Se Mi Park
  • Patent number: 10978683
    Abstract: The present invention provides a method of manufacturing n battery cells (n?2), each including a respective reference electrode for measuring a relative electrode potential, including: (i) manufacturing a reference cell composed of an electrolyte solution, the reference electrodes, and a lithium electrode; (ii) charging the reference cell; (iii) charging the reference cell to 40% to 60% of a capacity discharged in the process (ii), thereby performing formation on the reference electrodes; (iv) manufacturing the n battery cells, each of the battery cells including a respective one of the reference electrodes, an electrode assembly, the electrolyte solution and a battery case; and (v) in each of the battery cells, measuring a relative potential of the respective one of the reference electrodes and a positive electrode of the respective electrode assembly, and a relative potential of the respective one of the reference electrodes and a negative electrode of the respective electrode assembly.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: April 13, 2021
    Inventors: Ji Won Min, Sun Hwak Woo, Seok Koo Kim, Sei Woon Oh, Eun Ju Lee
  • Publication number: 20200403230
    Abstract: A negative electrode for a lithium secondary battery, where the negative electrode includes a negative electrode current collector, a negative electrode active material layer, a lithium layer that is positioned between the negative electrode current collector and the negative electrode active material layer, and a primer layer that is positioned between the negative electrode current collector and the lithium layer, and a manufacturing method thereof. This results in a simple method and a negative electrode with high capacity characteristics.
    Type: Application
    Filed: November 21, 2018
    Publication date: December 24, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Yeon Suk HONG, Seok Koo KIM, Sun Kyu KIM, Ji Won MIN
  • Patent number: 10873105
    Abstract: Provided are an electrode for a secondary battery and a manufacturing method thereof. According to the present invention, a secondary battery, which has high capacity and is also able to get an excellent evaluation in a nail penetration test so that stability is ensured, may be manufactured. In order to accomplish the above objectives, the present invention provides an electrode for a secondary battery which includes an electrode current collector; a first electrode active material layer formed on the electrode current collector; and a second electrode active material layer formed on the first electrode active material layer, wherein a layer composed of the electrode current collector and the first electrode active material layer has a tensile strain of 1.2% or less.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: December 22, 2020
    Inventors: Ji Won Min, Hoe Jin Hah, Jong Keon Yoon, Seok Koo Kim, Yeo Kyung Yoon, Janis Doelle
  • Publication number: 20200227724
    Abstract: Provided is a positive electrode for a lithium secondary battery, the positive electrode including a positive electrode mixture layer on a positive electrode current collector, wherein the positive electrode mixture layer includes a positive electrode active material and a lithium ion additive, the lithium ion additive is a lithium ion conductive ceramic material represented by Formula 1 below, and the lithium ion conductive ceramic material has a structure in which lithium ions are additionally inserted into vacancy sites of a NASICON-type (Na super ionic conductors-type) structure. Li1+x1+y1M12?x1M2x1(PO4)3 ??[Formula 1] In Formula 1, M1 is at least one of Ti and Ge, M2 is one or more selected from the group consisting Al, Cr, Ga, Fe, Sn, In, Lu, Y, and La, and 0<x?0.3, and 1.7?y1?2.0.
    Type: Application
    Filed: July 9, 2018
    Publication date: July 16, 2020
    Applicants: LG Chem, Ltd., UNIST (Ulsan National Institute of Science and Technology)
    Inventors: Ji Won Min, Seok Koo Kim, Youngsik Kim, Janis Doelle, Seongwoo Heo, Youngjun Lim
  • Publication number: 20200035995
    Abstract: A method of manufacturing a high loading electrode, which prevents the phenomenon of the binder being lifted, does not cause drying of the electrode slurry, and does not cause damage of the electrode layer and reduction of the electrode strength at the corners in the punching is provided. The method of manufacturing the high loading electrode includes applying an electrode slurry on a release film to thereby produce an electrode layer having the release film attached thereto, punching the electrode layer having the release film attached thereto to provide a plurality of punched electrode layers, each punched electrode layer having a size of a unit electrode, separating and removing the release film from the punched electrode layers, and stacking and rolling at least two punched electrode layers on a current collector.
    Type: Application
    Filed: March 8, 2018
    Publication date: January 30, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Ji Won MIN, Seok Koo KIM, Yong Jun KIM, Janis DOELLE, Se Mi PARK
  • Publication number: 20180301740
    Abstract: Provided are an electrode for a secondary battery and a manufacturing method thereof. According to the present invention, a secondary battery, which has high capacity and is also able to get an excellent evaluation in a nail penetration test so that stability is ensured, may be manufactured. In order to accomplish the above objectives, the present invention provides an electrode for a secondary battery which includes an electrode current collector; a first electrode active material layer formed on the electrode current collector; and a second electrode active material layer formed on the first electrode active material layer, wherein a layer composed of the electrode current collector and the first electrode active material layer has a tensile strain of 1.2% or less.
    Type: Application
    Filed: June 14, 2017
    Publication date: October 18, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Ji Won Min, Hoe Jin Hah, Jong Keon Yoon, Seok Koo Kim, Yeo Kyung Yoon, Janis Doelle
  • Publication number: 20180205049
    Abstract: The present invention provides a method of manufacturing a battery cell, including: (i) manufacturing a reference cell composed of an electrolyte solution, n reference electrodes (n?2) and a lithium electrode; (ii) charging the reference cell by applying a microcurrent, and then discharging the reference cell immediately thereafter; (iii) charging the reference cell to 40% to 60% of a capacity discharged in the process (ii), thereby performing formation on the reference electrodes so that the reference electrodes have a plateau potential simultaneously; (iv) manufacturing n battery cells with the reference electrodes subjected to formation, an electrode assembly, the electrolyte solution and a battery case; and (v) measuring a relative potential of the reference electrode subjected to formation and a positive electrode, and a relative potential of the reference electrode and a negative electrode, in each of the battery cells.
    Type: Application
    Filed: August 18, 2016
    Publication date: July 19, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Ji Won Min, Sun Hwak Woo, Seok Koo Kim, Sei Woon Oh, Eun Ju Lee