Patents by Inventor Seung Sang Hwang

Seung Sang Hwang 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: 12188515
    Abstract: A suspension arm includes a ball stud including a spherical ball; a bearing in which the spherical ball is accommodated; a housing having an inner peripheral portion and an outer peripheral portion; an arm body coupled to the outer peripheral portion of the housing; and an insert molding part which is injected to a lower portion of the bearing and the outer peripheral portion of the housing to be coupled to the bearing, the housing, and the arm body. The housing includes a matching portion having a matching surface formed to protrude in a radially outward direction from an upper portion of the outer peripheral portion and to be brought into contact with a mold. By forming the matching portion, it is possible to reduce the volume of the housing and to reduce the weight of the suspension arm while providing the matching surface with the mold.
    Type: Grant
    Filed: December 24, 2020
    Date of Patent: January 7, 2025
    Assignee: ILJIN CO., LTD.
    Inventors: Hyun Woo Kim, Sung Kook Park, Hyo Sang Hwang, Min Kook Park, Soon Chan Kwon, Seung Hyun Nam, Se Hwan Kim, Mu Chang Kang
  • Patent number: 12173215
    Abstract: The present invention relates to an etching composition and a method of producing a MXene. The etching composition of the present invention can stably and quickly produce a MXene at high temperature. The etching composition of the present invention can produce a MXene in high yield. The etching composition of the present invention can easily produce various types of MXenes. A method using the etching composition of the present invention can produce a MXene having excellent electrochemical and mechanical properties.
    Type: Grant
    Filed: January 7, 2022
    Date of Patent: December 24, 2024
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chong Min Koo, Tae Gon Oh, Seung Jun Lee, Seon Joon Kim, Soon Man Hong, Seung Sang Hwang, Albert Lee
  • Publication number: 20240417581
    Abstract: Disclosed in the present specification are a two-dimensional MXene surface-modified with a metal-organic network, a method of preparing the same, a MXene organic ink containing the same, and uses (e.g., an electromagnetic wave shielding material). In one aspect, the two-dimensional MXene surface-modified with a metal-organic network according to the present invention can use various organic ligands by linking the surface with the organic through the metal, and can be stably dispersed in various organic solvents, especially in industrial non-polar organic solvents as well as polar organic solvents, thereby being applied to a more general-purpose technologies, and securing stability against chemical oxidation to improve long-term stability.
    Type: Application
    Filed: January 9, 2024
    Publication date: December 19, 2024
    Inventors: Seon Joon KIM, Seung Sang HWANG, Albert LEE, Taegon OH, Tae Yun KO, Junpyo HONG
  • Patent number: 12048132
    Abstract: In an aspect, the present disclosure provides a heat-treated transition metal carbonitride MXene film annealed at high temperatures and a polymer composite comprising the same. In another aspect, the present disclosure provides a method for producing a heat-treated transition metal carbonitride MXene film comprising: obtaining a MXene aqueous solution containing dispersed 2-dimensional (2D) MXenes through an acid etching process; filtering the obtained MXene aqueous solution through a vacuum filtration process to produce a free-standing film; and annealing the produced free-standing film at high temperatures to obtain a heat-treated transition metal carbonitride MXene film. In still another aspect, the present disclosure provides an electromagnetic interference (EMI) shielding method comprising: superposing a coating comprising a heat-treated transition metal carbonitride MXene film on at least one surface of an object in a contact or non-contact manner.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: July 23, 2024
    Assignees: Korea Institute of Science and Technology, Drexel University
    Inventors: Yury Gogotsi, Kanit Hantanasirisakul, Chong Min Koo, Aamir Iqbal, Soon Man Hong, Seon Joon Kim, Seung Sang Hwang, Kyung Youl Baek, Albert Lee, Sangho Cho
  • Publication number: 20240204208
    Abstract: The present specification discloses an electrochemical catalyst of core-shell structure and manufacturing method thereof. The electrochemical catalyst according to one embodiment of the disclosure provides an effect of being stable in an alkaline environment that is not lost in an aqueous solution while having a high ion exchange capacity and a method for preparing the same.
    Type: Application
    Filed: November 7, 2023
    Publication date: June 20, 2024
    Inventors: Albert LEE, Seung Sang HWANG, Seon Joon KIM, Taegon OH, Ji Yoon JUNG, Young Sang PARK, Dong Jun HWANG, Gwan Hyun CHOI
  • Publication number: 20240191027
    Abstract: The specification relates an ionomer comprising a compound derived from N,N-diallylamine and a method for preparing the same. The ionomer according to one embodiment of the disclosure has an effect of providing excellent battery performance by controlling the ion exchange capability in a wide range while having excellent alkaline durability.
    Type: Application
    Filed: November 3, 2023
    Publication date: June 13, 2024
    Inventors: Albert LEE, Seung Sang Hwang, Seon Joon Kim, Taegon Oh, Ji Yoon Jung, Young Sang Park, Dong-Yeop Yoo, Jin Suk Ku, Junggyu Kim
  • Patent number: 11866597
    Abstract: The present disclosure relates to 2-dimensional MXenes surface-modified with catechol derivatives, a method for preparing the same, MXene organic ink including the same, and use thereof (e.g. flexible electrodes, conducive cohesive/adhesive materials, electromagnetic wave-shielding materials, flexible heaters, sensors, energy storage devices). Particularly, the simple, fast, and scalable surface-functionalization process of MXenes using catechol derivatives (e.g. ADOPA) organic ligands significantly improves the dispersion stability in various organic solvents (including ethanol, isopropyl alcohol, acetone and acetonitrile) and produces highly concentrated organic liquid crystals of various MXenes (including Ti2CTx, Nb2CTx, V2CTx, Mo2CTx, Ti3C2Tx, Ti3CNTx, Mo2TiC2Tx, and Mo2Ti2C3Tx). Such products offer excellent electrical conductivity, improved oxidation stability, excellent coating and adhesion abilities to various hydrophobic substrates, and composite processability with hydrophobic polymers.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: January 9, 2024
    Assignee: Korea Institute of Science and Technology
    Inventors: Chong Min Koo, In Sik In, Tae Yun Ko, Daesin Kim, Se Hyun Doo, Seon Joon Kim, Soon Man Hong, Seung Sang Hwang, Kyung Youl Baek, Albert Lee, Sangho Cho
  • Patent number: 11826927
    Abstract: Disclosed is a recycling apparatus for a cross-linked polyethylene resin using a twin screw extruder. The recycling apparatus for a cross-linked polyethylene resin using a twin screw extruder according to an embodiment of the present disclosure includes: a raw material supply unit configured to supply a raw material that is a cross-linked polyethylene resin; and a twin screw extruder configured to receive the raw material from the raw material supply unit, the twin screw extruder including a cylinder and a twin screw installed inside the cylinder to rotate in the same direction, the twin screw extruder being configured to de-crosslink and recycle the raw material under a de-crosslinking reaction temperature and reaction pressure atmosphere while continuously transporting the raw material along the twin screw by the rotation of the twin screw.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: November 28, 2023
    Assignee: Korea Institute of Science and Technology
    Inventors: Soon Man Hong, Hang Kyu Cho, Seung Sang Hwang, Chong Min Koo, Seon Joon Kim, Albert Lee, Hwan Gyu Lee, Junpyo Hong
  • Patent number: 11692079
    Abstract: The present invention relates to a 2-dimensional MXene particle surface-modified with a functional group comprising a saturated or unsaturated hydrocarbon, a preparation method thereof, and a use thereof (e.g., a conductive film).
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: July 4, 2023
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sangho Cho, Chong Min Koo, Soon Man Hong, Seung Sang Hwang, Kyung Youl Baek, Daesin Kim, Hye-rim Kim
  • Patent number: 11666896
    Abstract: Provided are a catalyst composition with improved processability and chemical warfare agent degradation ability, a film composite manufactured by casting the same, and a preparation method thereof. Specifically, provided are a catalyst composition including a copolymer of a first polymer and a second polymer; and a metal-organic framework (MOF), and a film composite including the same, wherein processability and catalytic activity are improved.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: June 6, 2023
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Kyung Youl Baek, Soon Man Hong, Seung Sang Hwang, Chong Min Koo, Seon Joon Kim, Albert Lee, Jin Young Seo, Min Hyuk Choi, Yu Ri Lee, Sejin Kim, Do Xuan Huy, Que Thi Nguyen, Sangho Cho
  • Publication number: 20230137881
    Abstract: The present disclosure relates to a visible and infrared stealth element. The element of the present disclosure may selectively control thermal radiation energy according to a wavelength, and may also control a surface color and reflectance of near-infrared light and short-wavelength infrared light.
    Type: Application
    Filed: March 17, 2022
    Publication date: May 4, 2023
    Inventors: Chong Min KOO, Tae Yun KO, Jae Eun YOON, Soon Man HONG, Seon Joon KIM, Seung Sang HWANG, Albert Lee, Myung Ki KIM, Chang Hoon PARK, Ji Sung KWON
  • Publication number: 20230136591
    Abstract: The present invention relates to an etching composition and a method of producing a MXene. The etching composition of the present invention can stably and quickly produce a MXene at high temperature. The etching composition of the present invention can produce a MXene in high yield. The etching composition of the present invention can easily produce various types of MXenes. A method using the etching composition of the present invention can produce a MXene having excellent electrochemical and mechanical properties.
    Type: Application
    Filed: January 7, 2022
    Publication date: May 4, 2023
    Inventors: Chong Min KOO, Tae Gon OH, Seung Jun LEE, Seon Joon KIM, Soon Man HONG, Seung Sang HWANG, Albert Lee
  • Publication number: 20220372231
    Abstract: The present disclosure relates to a UV- and heat-curable ladder-like polysilsesquioxane copolymer and a method for preparing the same. Since a controlled functionality can be provided only on a desired region via a thiol-ene click reaction without an additional additive, an insulating layer having a low dielectric constant and a microcircuit pattern can be formed without an additional etching process.
    Type: Application
    Filed: July 23, 2021
    Publication date: November 24, 2022
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Seung Sang HWANG, Soon Man Hong, Kyung Youl Baek, Chong Min Koo, Albert Lee, Seon Joon Kim, You Mee Choi
  • Patent number: 11492363
    Abstract: The present invention relates to a method for preparing size-modulated UiO-66, which is achieved by modulating the concentrations of reactants, and a catalyst with improved activity of hydrolyzing chemical warfare agents prepared by the method.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: November 8, 2022
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Kyung Youl Baek, Chong Min Koo, Soon Man Hong, Seung Sang Hwang, Sangho Cho, Jin Young Seo, Do Xuan Huy, Younghan Song, Sejin Kim, Changju Sung, Yeojin Ahn
  • Publication number: 20220339820
    Abstract: Disclosed is a recycling apparatus for a cross-linked polyethylene resin using a twin screw extruder. The recycling apparatus for a cross-linked polyethylene resin using a twin screw extruder according to an embodiment of the present disclosure includes: a raw material supply unit configured to supply a raw material that is a cross-linked polyethylene resin; and a twin screw extruder configured to receive the raw material from the raw material supply unit, the twin screw extruder including a cylinder and a twin screw installed inside the cylinder to rotate in the same direction, the twin screw extruder being configured to de-crosslink and recycle the raw material under a de-crosslinking reaction temperature and reaction pressure atmosphere while continuously transporting the raw material along the twin screw by the rotation of the twin screw.
    Type: Application
    Filed: October 14, 2021
    Publication date: October 27, 2022
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Soon Man HONG, Hang Kyu CHO, Seung Sang HWANG, Chong Min KOO, Seon Joon KIM, Albert LEE, Hwan Gyu LEE, Junpyo HONG
  • Publication number: 20210362142
    Abstract: Provided are a catalyst composition with improved processability and chemical warfare agent degradation ability, a film composite manufactured by casting the same, and a preparation method thereof. Specifically, provided are a catalyst composition including a copolymer of a first polymer and a second polymer; and a metal-organic framework (MOF), and a film composite including the same, wherein processability and catalytic activity are improved.
    Type: Application
    Filed: January 29, 2021
    Publication date: November 25, 2021
    Inventors: Kyung Youl BAEK, Soon Man HONG, Seung Sang HWANG, Chong Min KOO, Seon Joon KIM, Albert LEE, Jin Young SEO, Min Hyuk CHOI, Yu Ri LEE, Sejin KIM, DO XUAN HUY, Que Thi Nguyen, Sangho CHO
  • Publication number: 20210269664
    Abstract: The present disclosure relates to 2-dimensional MXenes surface-modified with catechol derivatives, a method for preparing the same, MXene organic ink including the same, and use thereof (e.g. flexible electrodes, conducive cohesive/adhesive materials, electromagnetic wave-shielding materials, flexible heaters, sensors, energy storage devices). Particularly, the simple, fast, and scalable surface-functionalization process of MXenes using catechol derivatives (e.g. ADOPA) organic ligands significantly improves the dispersion stability in various organic solvents (including ethanol, isopropyl alcohol, acetone and acetonitrile) and produces highly concentrated organic liquid crystals of various MXenes (including Ti2CTx, Nb2CTx, V2CTx, Mo2CTx, Ti3C2Tx, Ti3CNTx, Mo2TiC2Tx, and Mo2Ti2C3Tx). Such products offer excellent electrical conductivity, improved oxidation stability, excellent coating and adhesion abilities to various hydrophobic substrates, and composite processability with hydrophobic polymers.
    Type: Application
    Filed: February 11, 2021
    Publication date: September 2, 2021
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chong Min KOO, In Sik IN, Tae Yun KO, Daesin KIM, Se Hyun DOO, Seon Joon KIM, Soon Man HONG, Seung Sang HWANG, Kyung Youl BAEK, Albert LEE, Sangho CHO
  • Publication number: 20210262121
    Abstract: Provided are a method of manufacturing MXene fibers and MXene fibers manufactured therefrom, wherein the method includes a) preparing a dispersion including MXenes; and b) spinning the dispersion in a coagulation solution to obtain MXene fibers.
    Type: Application
    Filed: February 10, 2021
    Publication date: August 26, 2021
    Inventors: SangOuk KIM, Taeyeong YUN, Jin Gu KIM, Gang San LEE, Chong Min KOO, Hye Rim KIM, Seon Joon KIM, Soon Man HONG, Seung Sang HWANG, Kyung Youl BAEK, Sangho CHO
  • Publication number: 20210261415
    Abstract: In an aspect, the present disclosure provides a heat-treated transition metal carbonitride MXene film annealed at high temperatures and a polymer composite comprising the same. In another aspect, the present disclosure provides a method for producing a heat-treated transition metal carbonitride MXene film comprising: obtaining a MXene aqueous solution containing dispersed 2-dimensional (2D) MXenes through an acid etching process; filtering the obtained MXene aqueous solution through a vacuum filtration process to produce a free-standing film; and annealing the produced free-standing film at high temperatures to obtain a heat-treated transition metal carbonitride MXene film. In still another aspect, the present disclosure provides an electromagnetic interference (EMI) shielding method comprising: superposing a coating comprising a heat-treated transition metal carbonitride MXene film on at least one surface of an object in a contact or non-contact manner.
    Type: Application
    Filed: February 18, 2021
    Publication date: August 26, 2021
    Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, DREXEL UNIVERSITY
    Inventors: Yury GOGOTSI, Kanit HANTANASIRISAKUL, Chong Min KOO, Aamir IQBAL, Soon Man HONG, Seon Joon KIM, Seung Sang HWANG, Kyung Youl BAEK, Albert LEE, Sangho CHO
  • Patent number: 10907023
    Abstract: A method of preparing a polymer hollow particle, a low-specific gravity and monodispersed polymer hollow particle of various shapes prepared using the method, and a composite including the polymer hollow particle are provided. The method includes: a first step of providing, onto a substrate including a engraved pattern, at least one expandable particle comprising a foaming agent-containing expandable core and a thermoplastic polymer shell; a second step of removing an excess of the at least one expandable particle from a resulting product of the first step; a third step of expanding the at least one expandable particle in the engraved pattern of the substrate by thermally treating a resulting product of the second step; and a fourth step of separating, from the substrate, expanded hollow polymer particles which are a resulting product of the third step.
    Type: Grant
    Filed: May 28, 2018
    Date of Patent: February 2, 2021
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chong Min Koo, Soon Man Hong, Seung Sang Hwang, Kyung Youl Baek, Hyunchul Park, Seunggun Yu, Hyesung Cho