Patents by Inventor Hee Won CHOI

Hee Won 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).

  • Patent number: 12562368
    Abstract: A negative electrode whose rapid charging performance and lifetime characteristics are excellent and a secondary battery including the negative electrode. The negative electrode includes a current collector and a negative electrode active material layer on the current collector. The negative electrode active material layer includes a negative electrode active material, and the negative electrode active material includes first uncoated artificial graphite particles and second uncoated artificial graphite particles in a weight ratio of 4:6 to 6:4. The first uncoated artificial graphite particles are single particles having an average particle diameter (D50) of 5 ?m to 7 ?m, and the second uncoated artificial graphite particles are secondary particles formed by agglomerating a plurality of primary particles. The second uncoated artificial graphite particles have an average particle diameter (D50) of 20 ?m to 25 ?m.
    Type: Grant
    Filed: July 6, 2021
    Date of Patent: February 24, 2026
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won Choi, Sang Wook Woo, Suk In Noh
  • Publication number: 20260035408
    Abstract: The present invention relates to a WKYMVm peptide analogue and uses thereof, and the WKYMVm peptide analogues have increased stability due to an increased in vivo degradation half-life, enhance activity of neutrophils as a formylpeptide receptor agonist, and regulate the activity of immune cells mediating pathology of multiple sclerosis so that they can be effectively used for enhancing immunity or preventing or treating multiple sclerosis.
    Type: Application
    Filed: July 29, 2025
    Publication date: February 5, 2026
    Inventors: Yoe Sik BAE, Won Seok HU, Hyeon Jin CHO, Tae Hyeon JEONG, Lee Zhi KWON, Soo Hyuk CHOI, Hee Won CHOI, Hee Yeon KIM, Chae Na LIM
  • Patent number: 12444733
    Abstract: Disclosed is a negative electrode including a negative electrode active material layer, wherein the negative electrode active material layer includes a negative electrode active material and a conductive agent. The negative electrode active material includes carbon-based active material particles including natural graphite and an amorphous carbon-based material. The carbon-based active material particles have a specific surface area of 1.4 m2/g to 2.3 m2/g, and the conductive agent includes carbon nanotubes having an average length of 1 ?m to 12 ?m. A secondary battery including the negative electrode is also disclosed.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: October 14, 2025
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Joo Yul Baek, Hee Won Choi, Yeon Ji Oh, Chan Ki Park
  • Patent number: 12294087
    Abstract: A negative electrode active material for a lithium secondary battery which includes first negative electrode active material particles including artificial graphite particles and a carbon coating layer formed on the artificial graphite particle; and second negative electrode active material particles including natural graphite particles, wherein the first negative electrode active material particles have a larger average particle diameter (D50) than an average particle diameter (D50) of the second negative electrode active material particles, and a weight ratio of the first negative electrode active material particles and the second negative electrode active material particles is in a range of 70:30 to 95:5.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: May 6, 2025
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won Choi, Jae Wook Lee, Eun Kyung Kim, Seung Youn Choi, Je Young Kim
  • Patent number: 12237508
    Abstract: A negative electrode active material for a secondary battery including: natural graphite particles; and a carbon coating layer on a surface and in an inside of the natural graphite particles. The negative electrode active material for a secondary battery has a porosity of 3% to 13%.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: February 25, 2025
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won Choi, Je Young Kim, Sang Wook Woo, Li Lin Piao
  • Publication number: 20250032573
    Abstract: The present invention relates to a WKYMVm peptide analog comprising an amino acid sequence of Trp (W)-Lys (K)-Tyr (Y)-Met (M)-Val (V)-D-Met (m), in which at least one amino acid residue selected from the group consisting of Lys (K), Tyr (Y), and Met (M) in the amino acid sequence is substituted with a ?3-amino acid residue or a peptoid residue, and a use thereof. The WKYMVm peptide analogs of the present invention has effects of increasing stability by increasing in vivo degradation half-life and of promoting activation of innate immune responses by neutrophils through activation of formyl peptide receptors, and thus can be effectively used in preventing or treating a disease that is be prevented or treated by formyl peptide receptors, especially an infectious disease or inflammatory disease.
    Type: Application
    Filed: April 5, 2024
    Publication date: January 30, 2025
    Applicants: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY, INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Yoe Sik BAE, Nam Joo YUN, Hyeon Jin CHO, Soo Hyuk CHOI, Hye Rim YOON, Hee Won CHOI, Eun Jin SEO
  • Patent number: 12176544
    Abstract: A negative electrode including a negative electrode active material layer including a negative electrode active material, wherein the negative electrode active material includes a core and a coating layer disposed on the core. The core includes natural graphite and an amorphous carbon layer on the natural graphite, wherein the natural graphite has an average particle diameter, D50, of 10 ?m to 14 ?m.ONH The negative electrode active material includes 1,500 ppm wt % to 2,000 ppm wt % of oxygen, 200 ppm wt % to 300 ppm wt % of nitrogen, and 200 ppm wt % to 300 ppm wt % of hydrogen as measured by an ONH analysis, and the coating layer includes carbon nanofibers.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: December 24, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won Choi, Je Young Kim, Sang Wook Woo, Li Lin Piao
  • Patent number: 12087934
    Abstract: A negative electrode for a secondary battery including: a negative electrode current collector; and a negative electrode active material layer present on the negative electrode current collector. The negative electrode active material layer includes a negative electrode active material, wherein the negative electrode active material for a secondary battery includes natural graphite, and has a sphericity of 0.58 to 1, a tap density of 1.08 g/cc to 1.32 g/cc, and Dmax?Dmin of 16 ?m to 19 ?m, wherein Dmax?Dmin is a difference between a maximum particle diameter Dmax and a minimum particle diameter Dmin in a particle size distribution.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: September 10, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won Choi, Je Young Kim, Sang Wook Woo, Li Lin Piao
  • Patent number: 12080873
    Abstract: A negative electrode and a secondary battery including the negative electrode. The negative electrode including a current collector and a negative electrode active material layer, wherein the negative electrode active material layer includes negative electrode active material particles, the negative electrode active material particles include natural graphite particles and a carbon coating layer disposed on the natural graphite particles. The negative electrode active material particles have a D50 of 6 ?m to 9.2 ?m and a half-width of 5.0 ?m to 5.5 ?m based on a particle size distribution, and the specific surface area of the negative electrode active material particles is from 0.6 m2/g to 2.2 m2/g.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: September 3, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Li Lin Piao, Je Young Kim, Sang Wook Woo, Hee Won Choi
  • Publication number: 20240213441
    Abstract: A negative electrode whose rapid charging performance and lifetime characteristics are excellent and a secondary battery including the negative electrode. The negative electrode includes a current collector and a negative electrode active material layer on the current collector. The negative electrode active material layer includes a negative electrode active material, and the negative electrode active material includes first uncoated artificial graphite particles and second uncoated artificial graphite particles in a weight ratio of 4:6 to 6:4. The first uncoated artificial graphite particles are single particles having an average particle diameter (D50) of 5 ?m to 7 ?m, and the second uncoated artificial graphite particles are secondary particles formed by agglomerating a plurality of primary particles. The second uncoated artificial graphite particles have an average particle diameter (D50) of 20 ?m to 25 ?m.
    Type: Application
    Filed: July 6, 2021
    Publication date: June 27, 2024
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won CHOI, Sang Wook WOO, Suk In NOH
  • Patent number: 11894548
    Abstract: A negative electrode active material which includes a core including artificial graphite, and a carbon coating layer disposed on the surface of the core, wherein an edge plane of the negative electrode active material has a specific surface area of 1.0 m2/g to 1.9 m2/g, a negative electrode including the same, and a secondary battery including the negative electrode.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: February 6, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won Choi, Jae Wook Lee
  • Patent number: 11866338
    Abstract: An anode active material for secondary batteries which has improved cycle swelling characteristics and rapid charge performance, an anode comprising same, and a method for manufacturing same, in which the anode active material is manufactured by modifying the surface of natural graphite particles. The natural graphite particles have a Dmax/Dmin value of 1.6 to 2.1 in the particle size distribution thereof and have, formed in the surface thereof, pores having a diameter of 0.5 ?m to 2.0 ?m.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: January 9, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won Choi, Je Young Kim, Sang Wook Woo, Li Lin Piao
  • Patent number: 11862799
    Abstract: An anode active material for a secondary battery that has improved cycle swelling properties and rapid charge performance, an anode comprising same, and a method for manufacturing same. The anode active material is a mixture of artificial graphite and spherical natural graphite, wherein the spherical natural graphite has an average particle diameter (D 50) of 12 ?m or less, with D 90-D 10 value ranging from 5 ?m to 12 ?m.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: January 2, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won Choi, Je Young Kim, Sang Wook Woo, Li Lin Piao
  • Patent number: 11799070
    Abstract: A negative electrode active material for a lithium secondary battery, including: first negative electrode active material particles including first artificial graphite particles and a carbon coating layer on a surface of the first artificial graphite particles, wherein the carbon coating layer comprises hard carbon; and second negative electrode active material particles including second artificial graphite particles, wherein a difference between an average particle diameter D50 of the first negative electrode active material particles and an average particle diameter D50 of the second negative electrode active material particles is 5 ?m or less, and a temperature at an exothermic peak in differential thermogravimetric analysis of the carbon coating layer is in a range of 580° C. to 690° C.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: October 24, 2023
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won Choi, Jae Wook Lee, Eun Kyung Kim, Seung Youn Choi, Je Young Kim
  • Patent number: 11799072
    Abstract: An anode active material for a secondary battery, which has improved cycle swelling properties and rapid charge performance, an anode comprising an anode active material for a secondary battery, and a method for manufacturing same. The anode active material is a mixture of scaly natural graphite and spherical natural graphite. An average particle diameter (D50) of the scaly natural graphite is 10 ?m to 15 ?m and an average particle diameter (D50) of the spherical natural graphite is 14 ?m or less.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: October 24, 2023
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won Choi, Je Young Kim, Sang Wook Woo, Li Lin Piao
  • Patent number: 11784314
    Abstract: A negative electrode for a lithium secondary battery including a negative electrode current collector and a negative electrode active material layer formed on at least one surface of the negative electrode current collector. The negative electrode active material layer includes a negative electrode active material including artificial graphite particles, and the negative electrode has a pore resistance Rp of 6? or less.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: October 10, 2023
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won Choi, Sang Wook Woo
  • Patent number: 11764349
    Abstract: A negative electrode active material for a lithium secondary battery, a negative electrode including the same, and a lithium secondary battery including the negative electrode. Specifically, the present invention relates to a negative electrode active material capable of minimizing changes in a structure and internal total pore volume of an electrode during rolling of the electrode by controlling the type and amount of carbon coated on a surface of an artificial graphite active material, a negative electrode including the same, and a lithium secondary battery including the negative electrode.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: September 19, 2023
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won Choi, Jae Wook Lee, Eun Kyung Kim, Seung Youn Choi, Je Young Kim
  • Publication number: 20230105631
    Abstract: A negative electrode whose rapid charging performance and lifetime characteristics are excellent and a secondary battery including the negative electrode. The negative electrode includes a current collector and a negative electrode active material layer on at least one surface of the current collector. The negative electrode active material layer includes a negative electrode active material. The negative electrode active material includes uncoated artificial graphite particles consisting of secondary particles formed by agglomerating a plurality of primary particles, the primary particles have an average particle diameter (D50) of 7 ?m to 10 ?m, the secondary particles have an average particle diameter (D50) of 15 ?m to 20 ?m, and the uncoated artificial graphite particles have a crystallite size along the a-axis (La(100)) of 200 nm to 300 nm and a crystallite size along the c-axis (Lc(002)) of 50 nm to 100 nm as analyzed by XRD.
    Type: Application
    Filed: July 6, 2021
    Publication date: April 6, 2023
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won CHOI, Yong Ju LEE, Sang Wook WOO
  • Patent number: 11539039
    Abstract: A negative electrode for a lithium secondary battery, in which a LiF layer comprising amorphous LiF in an amount of 30 mol % or more is formed on a negative electrode active material layer comprising a carbon-based active material, a lithium secondary battery comprising the same, and a preparation method thereof.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: December 27, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Oh Byong Chae, Eun Kyung Kim, Dong Sub Jung, Sang Wook Woo, Ju Ho Chung, Hee Won Choi
  • Patent number: 11522198
    Abstract: A negative electrode for a lithium-metal secondary battery, which has a wide specific surface area and a current density distribution that can be uniformly implemented, and a lithium-metal secondary battery including the same.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: December 6, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won Choi, Sang Wook Woo, Oh Byong Chae, Eun Kyung Kim