Patents by Inventor Chul-Hwan Kim

Chul-Hwan 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).

  • Patent number: 11969397
    Abstract: The present invention relates to a composition for preventing or treating transplantation rejection or a transplantation rejection disease, comprising a novel compound and a calcineurin inhibitor. A co-administration of the present invention 1) reduces the activity of pathogenic Th1 cells or Th17 cells, 2) increases the activity of Treg cells, 3) has an inhibitory effect against side effects, such as tissue damage, occurring in the sole administration thereof, 4) inhibits various pathogenic pathways, 5) inhibits the cell death of inflammatory cells, and 6) increases the activity of mitochondria, in an in vivo or in vitro allogenic model, a transplantation rejection disease model, a skin transplantation model, and a liver-transplanted patient, and thus inhibits transplantation rejection along with mitigating side effects possibly occurring in the administration of a conventional immunosuppressant alone.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: April 30, 2024
    Assignee: THE CATHOLIC UNIVERSITY OF KOREA INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Mi-La Cho, Dong-Yun Shin, Jong-Young Choi, Chul-Woo Yang, Sung-Hwan Park, Seon-Yeong Lee, Min-Jung Park, Joo-Yeon Jhun, Se-Young Kim, Hyeon-Beom Seo, Jae-Yoon Ryu, Keun-Hyung Cho
  • Patent number: 11967269
    Abstract: A scan driver includes: a first transistor having a first electrode coupled to an output scan line, a second electrode coupled to a first power line, and a gate electrode coupled to a first node; a second transistor having a first electrode coupled to a first clock line, a second electrode coupled to the output scan line, and a gate electrode coupled to a second node; a third transistor having a first electrode coupled to the first node, a second electrode coupled to a first input scan line, and a gate electrode coupled to a second clock line; and a fourth transistor having a first electrode coupled to the second node and a second electrode and a gate electrode, which are coupled to a second input scan line, wherein the first input scan line and the second input scan line are different from each other.
    Type: Grant
    Filed: October 4, 2022
    Date of Patent: April 23, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chul Kyu Kang, Sung Hwan Kim, Soo Hee Oh, Dong Sun Lee, Sang Moo Choi
  • Publication number: 20230414513
    Abstract: A non-surfactant type oil-water (O/W) dispersion composition containing non-polar solvent droplets in a polar solvent, of which transparency is 90-100%, and a non-surfactant type water-oil (W/O) dispersion composition containing polar solvent droplets in a non-polar solvent, of which transparency is 90-100% are disclosed. Also disclosed are methods for manufacturing methods for both of the compositions.
    Type: Application
    Filed: September 7, 2023
    Publication date: December 28, 2023
    Applicants: ASTIN CO., LTD.
    Inventor: Chul Hwan KIM
  • Patent number: 11779539
    Abstract: The present invention relates to: a non-surfactant type oil-water (O/W) dispersion composition comprising non-polar solvent droplets in a polar solvent, the transparency of the dispersion composition being 90-100%; a non-surfactant type water-oil (W/O) dispersion composition comprising polar solvent droplets in a non-polar solvent, the transparency of the dispersion composition being 90-100%; and manufacturing methods for both of the compositions.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: October 10, 2023
    Assignees: ASTIN CO., LTD.
    Inventor: Chul Hwan Kim
  • Patent number: 11590445
    Abstract: Provided is an apparatus for treating waste gas of the electronics industry, and the apparatus includes: a reaction chamber in which an inlet and an outlet are formed and an inner space for purifying waste gas is formed; a first partition plate extending from an inner wall of the reaction chamber facing the inlet in a direction toward the inlet, dividing the inner space into a pre-treatment zone for collecting dust in the waste gas and a remaining purification zone; a second partition plate extending vertically downward from a ceiling of the reaction chamber, dividing the purification zone into a thermal decomposition zone for heating and thermally decomposing waste gas and a post-treatment zone; and a heater installed at the ceiling of the reaction chamber so as to be located in the thermal decomposition zone to thermally decompose a perfluorinated compound by heating waste gas introduced into the thermal decomposition zone; and a dry scrubber unit including one or more catalysts to collect at least one of t
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: February 28, 2023
    Inventors: Dong Soo Kim, Chul Hwan Kim, Hyun Kyung Kim
  • Publication number: 20220387922
    Abstract: Provided is an apparatus for treating waste gas of the electronics industry, and the apparatus includes: a reaction chamber in which an inlet and an outlet are formed and an inner space for purifying waste gas is formed; a first partition plate extending from an inner wall of the reaction chamber facing the inlet in a direction toward the inlet, dividing the inner space into a pre-treatment zone for collecting dust in the waste gas and a remaining purification zone; a second partition plate extending vertically downward from a ceiling of the reaction chamber, dividing the purification zone into a thermal decomposition zone for heating and thermally decomposing waste gas and a post-treatment zone; and a heater installed at the ceiling of the reaction chamber so as to be located in the thermal decomposition zone to thermally decompose a perfluorinated compound by heating waste gas introduced into the thermal decomposition zone; and a dry scrubber unit including one or more catalysts to collect at least one of t
    Type: Application
    Filed: July 8, 2021
    Publication date: December 8, 2022
    Inventors: Dong Soo Kim, Chul Hwan Kim, Hyun Kyung Kim
  • Publication number: 20220311057
    Abstract: The present invention relates to an electrode assembly and a secondary battery comprising same, wherein an insulator formed on a separator can prevent burrs, which may occur on a positive or negative electrode tab formed by blanking, from penetrating the separator, thereby improving electric stability, and a longitudinal end and a corner portion have increased insulation thicknesses such that, by enhancing cushion functions, same may be advantageous in terms of short-circuiting protection.
    Type: Application
    Filed: May 12, 2020
    Publication date: September 29, 2022
    Inventors: Jae Wook LEE, Sung Hyun CHOI, Chul Hwan KIM
  • Patent number: 11196042
    Abstract: The present invention relates to a method for preparing silicon-based active material particles for a secondary battery and silicon-based active material particles. The method for preparing silicon-based active material particles according to an embodiment of the present invention comprises the steps of: providing silicon powder; dispersing the silicon powder into an oxidant solvent to provide a mixture prior to grinding; fine-graining the silicon powder by applying mechanical compression and shear stress to the silicon powder in the mixture prior to grinding to produce silicon particles; producing a layer of chemical oxidation on the fine-grained silicon particles with the oxidant solvent while applying mechanical compression and shear stress to produce silicon-based active material particles; and drying the resulting product comprising the silicon-based active material particles to yield silicon-based active material particles.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: December 7, 2021
    Inventors: Young Tai Cho, Yong Gil Choi, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
  • Publication number: 20210077401
    Abstract: The present invention relates to: a non-surfactant type oil-water (O/W) dispersion composition comprising non-polar solvent droplets in a polar solvent, the transparency of the dispersion composition being 90-100%; a non-surfactant type water-oil (W/O) dispersion composition comprising polar solvent droplets in a non-polar solvent, the transparency of the dispersion composition being 90-100%; and manufacturing methods for both of the compositions.
    Type: Application
    Filed: April 16, 2019
    Publication date: March 18, 2021
    Inventor: Chul Hwan KIM
  • Patent number: 10797303
    Abstract: The present invention relates to a silicon-based anode active material and a method of fabricating the same. The silicon-based anode active material according to an embodiment of the present invention comprises: particles comprising silicon and oxygen combined with the silicon, wherein a carbon-based conductive layer is coated with on outermost surface of the particles; and phosphorus doped in the particles, wherein a content of the phosphorus with respect to a total weight of the particles and the phosphorus doped in the particles have a range of 0.01 wt % to 15 wt %, and a content of the oxygen has a range of 9.5 wt % to 25 wt %.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: October 6, 2020
    Assignee: Nexeon Ltd
    Inventors: Young Tai Cho, Yong Gil Choi, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
  • Patent number: 10797312
    Abstract: The present invention relates to a silicon-based anode active material and a method for manufacturing the same. The silicon-based anode active material according to an embodiment of the present invention comprises: particles comprising silicon and oxygen combined with the silicon, and having a carbon-based conductive film coated on the outermost periphery thereof; and boron doped inside the particles, wherein with respect to the total weight of the particles and the doped boron, the boron is included in the amount of 0.01 weight % to 17 weight %, and the oxygen is included in the amount of 16 weight % to 29 weight %.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: October 6, 2020
    Assignee: Nexeon Ltd.
    Inventors: Young Tai Cho, Yong Gil Choi, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
  • Patent number: 10693134
    Abstract: Provided is an anode active material for a secondary battery and a method of fabricating the anode active material. A silicon-based active material composite according to an embodiment of the inventive concept includes silicon and silicon oxide obtained by oxidizing at least a part of the silicon, and an amount of oxygen with respect to a total weight of the silicon and the silicon oxide is restricted to 9 wt % to 20 wt %.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: June 23, 2020
    Inventors: Young Tai Cho, Seung Chul Park, Seon Park, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim, Hee Young Seo
  • Patent number: 10586976
    Abstract: Provided is a negative active material and a lithium secondary battery including the negative active material. The negative active material for a secondary battery includes silicon particles, wherein circularities of the particles are determined by equation 1 below, and the circularities are 0.5 or greater and 0.9 or less, Circularity=2(pi×A)1/2/P??[Equation 1] where A denotes a projected area of the silicon particle that is two-dimensionally projected, and P denotes a circumferential length of the silicon particle that is two-dimensionally projected.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: March 10, 2020
    Assignee: Nexeon Ltd
    Inventors: Young Tai Cho, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
  • Publication number: 20200016052
    Abstract: The present invention relates to a silica aerogel composite comprising a hydrophilically surface-modified hydrophobic silica aerogel and an organic UV blocker supported in pores of the silica aerogel. The silica aerogel composite of the present invention causes no skin irritation since the organic UV blocker inducing skin irritation is stably supported inside the silica aerogel to minimize the contact with the skin. Also, the silica aerogel composite is high in the organic UV blocker content per unit weight, and exhibits an excellent blocking effect against both UVA and UVB compared with conventional UV blockers.
    Type: Application
    Filed: September 18, 2017
    Publication date: January 16, 2020
    Applicant: ASTIN CO., LTD.
    Inventors: Chul Hwan KIM, Yeon Ju PARK, Hye Mun KIM, Ja Eun LEE
  • Patent number: 10522824
    Abstract: The present invention relates to a method for preparing silicon-based active material particles for a secondary battery and silicon-based active material particles. The method for preparing silicon-based active material particles according to an embodiment of the present invention comprises the steps of: providing silicon powder; dispersing the silicon powder into an oxidant solvent to provide a mixture prior to grinding; fine-graining the silicon powder by applying mechanical compression and shear stress to the silicon powder in the mixture prior to grinding to produce silicon particles; producing a layer of chemical oxidation on the fine-grained silicon particles with the oxidant solvent while applying mechanical compression and shear stress to produce silicon-based active material particles; and drying the resulting product comprising the silicon-based active material particles to yield silicon-based active material particles.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: December 31, 2019
    Assignee: Nexeon Ltd
    Inventors: Young Tai Cho, Yong Gil Choi, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
  • Publication number: 20190326594
    Abstract: Provided is an anode active material for a secondary battery and a method of fabricating the anode active material. A silicon-based active material composite according to an embodiment of the inventive concept includes silicon and silicon oxide obtained by oxidizing at least a part of the silicon, and an amount of oxygen with respect to a total weight of the silicon and the silicon oxide is restricted to 9 wt % to 20 wt %.
    Type: Application
    Filed: July 2, 2019
    Publication date: October 24, 2019
    Inventors: Young Tai Cho, Seung Chul Park, Seon Park, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim, Hee Young Seo
  • Publication number: 20190296340
    Abstract: The present invention relates to a method for preparing silicon-based active material particles for a secondary battery and silicon-based active material particles. The method for preparing silicon-based active material particles according to an embodiment of the present invention comprises the steps of: providing silicon powder; dispersing the silicon powder into an oxidant solvent to provide a mixture prior to grinding; fine-graining the silicon powder by applying mechanical compression and shear stress to the silicon powder in the mixture prior to grinding to produce silicon particles; producing a layer of chemical oxidation on the fine-grained silicon particles with the oxidant solvent while applying mechanical compression and shear stress to produce silicon-based active material particles; and drying the resulting product comprising the silicon-based active material particles to yield silicon-based active material particles.
    Type: Application
    Filed: June 12, 2019
    Publication date: September 26, 2019
    Inventors: Young Tai Cho, Yong Gil Choi, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
  • Patent number: 10396355
    Abstract: Provided is an anode active material for a secondary battery and a method of fabricating the anode active material. A silicon-based active material composite according to an embodiment of the inventive concept includes silicon and silicon oxide obtained by oxidizing at least a part of the silicon, and an amount of oxygen with respect to a total weight of the silicon and the silicon oxide is restricted to 9 wt % to 20 wt %.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: August 27, 2019
    Assignee: Nexeon Ltd.
    Inventors: Young Tai Cho, Seung Chul Park, Seon Park, Hee Young Seo, Jee Hye Park, Yong Eui Lee, Chul Hwan Kim
  • Patent number: 10152069
    Abstract: A system for controlling voltage unbalance in a direct current distribution system includes a measurement processor configured to measure a positive load current, and a negative load current at a first load point, including a first load connected to a positive line and a neutral line and a second load connected to the neutral line and a negative line, and at a second load point in a power distribution system; and a control processor configured to determine whether to activate a first load point switching signal based on the positive and negative load currents at the first and second load points to control the first load point to switch the connections of the first load and the second load between the positive line and the negative line.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: December 11, 2018
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Chul Hwan Kim, Gi Hyeon Gwon, Tack Hyun Jung, Joon Han, Yun Sik Oh, Doo Ung Kim, Chul Ho Noh
  • Patent number: 9929409
    Abstract: The present invention relates to a battery having an electrode structure using metal fiber and a preparation method of an electrode structure. A preparation method of an electrode structure, according to one embodiment of the present invention, includes a step for providing one or more metal fibers forming a conductive network; a step for providing particle compositions including electrical active materials of a particle shape; a step for mixing the metal fibers and the particle compositions; and a step for compressing the mixed metal fibers and the particle compositions.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: March 27, 2018
    Assignee: JENAX INC.
    Inventors: Chang Hyeon Kim, Lee Hyun Shin, Chul Hwan Kim