Patents by Inventor In-Hwan Oh

In-Hwan Oh 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: 11982976
    Abstract: Provided is a hologram transcription apparatus including: an exposure part; and a light source part for irradiating light to the exposure part. Here, the exposure part includes a transfer unit for transferring a hologram film, and the exposure part is rotatable to change an angle formed with the light.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: May 14, 2024
    Assignee: HANGYO HOLOGRAM CO., LTD.
    Inventors: Sung Chul Park, Eun Seok Kim, In Hwan Oh
  • Patent number: 11666853
    Abstract: Disclosed are a carbon dioxide absorbent composition in which an N-alkylaminoalkanol; a polyhydroxyamine-based compound; and ethylenediamine and/or diethylenetriamine are mixed, a method for preparing the same, and a method and an apparatus for carbon dioxide absorption/separation using the same. Since the carbon dioxide absorbent according to the present disclosure has superior carbon dioxide absorption capacity and remarkably lower absorbent recycling temperature as compared to the existing absorbents such as monoethanolamine, etc., total energy consumption in the capturing process can be reduced greatly. In addition, since carbon dioxide is recovered at low recycling temperature, contamination by water or absorbent vapor may be prevented.
    Type: Grant
    Filed: February 15, 2021
    Date of Patent: June 6, 2023
    Assignees: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, KOREA LAND & HOUSING CORPORATION
    Inventors: In Wook Nah, Jae Ik Kim, Soon Jong Kwak, In Hwan Oh, Daeseung Kyung, Youngjong Sim, Yeongmin Kim, Han-Guen Ahn, Sang-Ick Choi
  • Publication number: 20230132735
    Abstract: Disclosed are a method and an apparatus for preparing an alkylene carbonate using a polyamine-based heterogeneous catalyst. The rapid increase in reactor temperature and the risk of explosion due to heat of reaction may be prevented by recycling the produced alkylene carbonate to the reactor. Accordingly, it is possible to obtain the alkylene carbonate stably and continuously with high yield while maintaining reaction temperature and pressure constant.
    Type: Application
    Filed: October 24, 2022
    Publication date: May 4, 2023
    Inventors: In Wook NAH, Jae Ik KIM, Soon Jong KWAK, In Hwan OH
  • Publication number: 20220233997
    Abstract: Disclosed are a carbon dioxide absorbent composition in which an N-alkylaminoalkanol; a polyhydroxyamine-based compound; and ethylenediamine and/or diethylenetriamine are mixed, a method for preparing the same, and a method and an apparatus for carbon dioxide absorption/separation using the same. Since the carbon dioxide absorbent according to the present disclosure has superior carbon dioxide absorption capacity and remarkably lower absorbent recycling temperature as compared to the existing absorbents such as monoethanolamine, etc., total energy consumption in the capturing process can be reduced greatly. In addition, since carbon dioxide is recovered at low recycling temperature, contamination by water or absorbent vapor may be prevented.
    Type: Application
    Filed: February 15, 2021
    Publication date: July 28, 2022
    Inventors: In Wook NAH, Jae Ik KIM, Soon Jong KWAK, In Hwan OH, Daeseung KYUNG, Youngjong SIM, Yeongmin KIM, Han-guen AHN, Sang-ick CHOI
  • Publication number: 20210356908
    Abstract: Provided is a hologram transcription apparatus including: an exposure part; and a light source part for irradiating light to the exposure part. Here, the exposure part includes a transfer unit for transferring a hologram film, and the exposure part is rotatable to change an angle formed with the light.
    Type: Application
    Filed: October 8, 2019
    Publication date: November 18, 2021
    Inventors: Sung Chul Park, Eun Seok Kim, In Hwan Oh
  • Patent number: 10923726
    Abstract: An artificial solid electrolyte interphase (ASEI) of an anode for a secondary battery includes a first film composed of amino-functionalized, reduced graphene oxide (rGO) that is amino-functionalized by binding with polyethyleneimine present in an amount of from 1 to 50% by weight, based on total weight of the amino-functionalized, reduced graphene oxide (rGO) and that is disposed in contact with an anode material to protect the anode material; and a second film comprised of amino-functionalized, multi-walled carbon nanotubes that is amino-functionalized by binding with polyethyleneimine and that is stacked on the first film. An anode of a secondary battery including the ASEI enables rapid diffusion and stable deposition of lithium to inhibit the formation of dendrites. In a secondary battery including the anode, the ASEI prevents side reactions between a lithium metal anode and the electrolyte, achieving good electrochemical stability and high Coulombic efficiency.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: February 16, 2021
    Assignee: Korea Institute of Science and Technology
    Inventors: Won Il Cho, Mun Sek Kim, Seung Hun Lee, Min Seop Kim, Van Dung Do, In Wook Nah, In Hwan Oh
  • Patent number: 10727466
    Abstract: In a secondary battery including a separator, the improvement includes a coating layer that is disposed on the separator and that comprises a polyethyleneimine-attached carbonaceous material The secondary battery may include an adhesive buffer layer provided between the separator and the coating layer which imparts adhesion force between the separator and the coating layer. The carbonaceous material adsorbs lithium polysulfides (LiPS) in use to inhibit a shuttling reaction between the anode and the cathode, caused by the dissolution of lithium polysulfides in the electrolyte, and increases recyclability of the lithium polysulfides, resulting in improvement of life characteristics and rate characteristics of the secondary battery.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: July 28, 2020
    Assignee: Korea Institute of Science and Technology
    Inventors: Won Il Cho, Mun Sek Kim, In Wook Nah, Young Rok Lim, Sun Min Park, In Hwan Oh
  • Patent number: 10658670
    Abstract: An anode includes a thin film of an anode material; and a protective layer that is formed on the thin film of the anode material, that is composed of functionalized metal oxide nanoparticles, which are lithium-terminated sulfonated metal oxide nanoparticles, and that has a thickness of 300-5000 nm. A method for manufacturing the anode includes dispersing the functionalized metal oxide nanoparticles into a dispersion medium to form a dispersion; dipping a substrate into water, and introducing the dispersion thereto so that the functionalized metal oxide nanoparticles form a self-assembled molecular film on the water surface; lifting the substrate over the water surface to transfer the self-assembled molecular film onto the substrate, thereby providing a substrate coated with a functionalized metal oxide film; and transferring the functionalized metal oxide film onto the thin film of the anode material to provide an anode coated with the functionalized metal oxide film.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: May 19, 2020
    Assignee: Korea Institute of Science and Technology
    Inventors: Won Il Cho, In Wook Nah, In Hwan Oh, Van Dung Do, Mun Sek Kim
  • Publication number: 20190280304
    Abstract: The artificial solid electrolyte interphase of an anode for a secondary battery including multi-walled carbon nanotubes to protect an underlying anode material in the form of a thin film. The use of the artificial solid electrolyte interphase enables rapid diffusion and stable deposition of lithium to inhibit the formation of dendrites. In addition, the artificial solid electrolyte interphase prevents side reactions between the lithium metal anode and the electrolyte, achieving good electrochemical stability and high Coulombic efficiency.
    Type: Application
    Filed: March 7, 2019
    Publication date: September 12, 2019
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: WON IL CHO, Mun Sek KIM, Seung Hun LEE, Min Seop KIM, Van Dung DO, In Wook NAH, In Hwan OH
  • Publication number: 20180269453
    Abstract: A polyethyleneimine-attached carbonaceous material for a separator for a secondary battery. The carbonaceous material for coating a separator for a secondary battery adsorbs lithium polysulfides (LiPS) to inhibit a shuttling reaction between an anode and a cathode, caused by the dissolution of lithium polysulfides in electrolyte, and increases recyclability of lithium polysulfides, resulting in improvement of life characteristics and rate characteristics of a battery.
    Type: Application
    Filed: December 19, 2017
    Publication date: September 20, 2018
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Won Il Cho, Mun Sek Kim, In Wook Nah, Young Rok Lim, Sun Min Park, In Hwan Oh
  • Publication number: 20180241042
    Abstract: Functionalized metal oxide nanoparticles which are lithium-terminated sulfonated metal oxide nanoparticles. According to the anode to which lithium-terminated sulfonated metal oxide nanoparticles are introduced as a protective layer, negatively charged sulfonate groups may cause electrostatic repulsion of lithium polysulfides and limit access of lithium polysulfides to a lithium metal anode while reducing the interfacial resistance by lithium fixed to sulfonate groups, inhibit growth of dendrites at a lithium metal anode and perforation of a separator, and the protective layer serves as an artificial solid electrolyte interphase (SEI) layer positioned on the surface of lithium metal and reducing the impedance to charge transfer reaction, thereby increasing the Coulomb efficiency of a lithium-sulfur battery. Thus, it is possible to improve the electrochemical characteristics, such as charge/discharge capacity, life and rate characteristics.
    Type: Application
    Filed: December 19, 2017
    Publication date: August 23, 2018
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Won IL CHO, In Wook NAH, In Hwan OH, Van Dung DO, Mun Sek KIM
  • Patent number: 10030496
    Abstract: The present disclosure relates to a method for producing a synthesis gas using a solid acid, more particularly to a method for producing a synthesis gas using a solid acid capable of remarkably decreasing production of environmental pollutants such as carbon dioxide, which includes producing hydrogen by reacting a solid acid with water and producing a synthesis gas by reacting the produced hydrogen with a carbon compound.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: July 24, 2018
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hong Gon Kim, Min Jae Ko, Ju Hee Kim, Young Sang Cho, Jae Ik Kim, Kang-Bong Lee, In-Hwan Oh
  • Publication number: 20170065966
    Abstract: Disclosed are a modified catalyst for converting ortho-hydrogen to para-hydrogen, in which a metal active material capable of converting ortho-hydrogen to para-hydrogen is coated on a surface of a porous support, a method for preparing the same, and an apparatus and a method for converting ortho-hydrogen to para-hydrogen in hydrogen gas using the same. Accordingly, a pressure drop may be prevented and impurities in hydrogen gas may also be simultaneously removed when ortho-hydrogen is converted to para-hydrogen, and a stable reaction operation may be enabled.
    Type: Application
    Filed: September 7, 2016
    Publication date: March 9, 2017
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: In Wook NAH, Sarng Woo KARNG, In Hwan OH, Kang Bong LEE, Jung Hyun KIM
  • Publication number: 20170008763
    Abstract: Disclosed herein is an apparatus for precooling and purifying hydrogen including a body which includes a first chamber and a second chamber disposed in the first chamber with the second chamber being filled with a liquid cooling medium, a first cyclone chamber disposed in the second chamber and connected to a hydrogen supply pipe on an upper of one side thereof to allow the hydrogen which flows therein to move downward rotating to perform thermal exchange with the cooling medium and separation of impurities therefrom, a first hydrogen discharge pipe to allow hydrogen to flow from the first cyclone chamber to the outside, and an ortho-para hydrogen converting catalyst disposed on a path through which hydrogen which flows in the first hydrogen discharge pipe moves to allow ortho-para hydrogen conversion to be performed.
    Type: Application
    Filed: December 3, 2015
    Publication date: January 12, 2017
    Inventors: Sarng Woo KARNG, In Hwan OH
  • Publication number: 20160305610
    Abstract: Provided is a low heat loss cryogenic liquid container, which includes: an outer container, to an upper end of which an upper end cover is coupled and an interior of which is maintained in a vacuum; an inner container that is disposed inside the outer container apart from an inner wall of the outer container and contains a cryogenic liquid; a liquid inflow/outflow pipe that connects an exterior of the outer container and an interior of the inner container and serves as a passage for charging and/or discharging the cryogenic liquid; and a support including a strut member that is disposed between an inner lower surface of the outer container and an outer lower surface of the inner container and is formed of a low heat conductivity material to interrupt heat conduction, and springs disposed at least one position between an upper end of the strut member and the outer lower surface of the inner container, between a lower end of the strut member and the inner lower surface of the outer container, and between both o
    Type: Application
    Filed: April 12, 2016
    Publication date: October 20, 2016
    Inventors: Sarng Woo KARNG, Seo Young KIM, Jong Hoon BAIK, In Hwan OH
  • Publication number: 20160273691
    Abstract: A hose clip includes a body made of a steel material, and a composite coating film formed on a surface of the body. The composite coating film is clear post-processed with a silicate-based material so that a silicate inorganic binder and an acrylic inorganic binder are appropriately diluted in the hose clip to perform clear post-processing coating, thereby preventing corrosion by potential difference and improving visibility. Phenomenon such as coolant leakage and engine burning due to fastening omission of the hose clip may be prevented to improve marketability and durability of a vehicle, and a manufacturing process of the hose clip.
    Type: Application
    Filed: August 10, 2015
    Publication date: September 22, 2016
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: In Hwan OH, Sang Soo KIM
  • Publication number: 20150292312
    Abstract: The present disclosure relates to a method for producing a synthesis gas using a solid acid, more particularly to a method for producing a synthesis gas using a solid acid capable of remarkably decreasing production of environmental pollutants such as carbon dioxide, which includes producing hydrogen by reacting a solid acid with water and producing a synthesis gas by reacting the produced hydrogen with a carbon compound.
    Type: Application
    Filed: August 1, 2013
    Publication date: October 15, 2015
    Inventors: Hong Gon Kim, Min Jae Ko, Ju Hee Kim, Young Sang Cho, Jae Ik Kim, Kang-Bong Lee, In-Hwan Oh
  • Patent number: 9018312
    Abstract: A thermoplastic resin composition with improved impact resistance can include (A) about 30 to about 99 parts by weight of an epoxy group-containing styrenic polymer comprising (A1) about 5 to about 100% by weight of an epoxy group-containing vinyl copolymer containing about 0.001 to about 5.0 mol % of an epoxy compound; and (A2) about 0 to about 95% by weight of a rubber modified styrenic copolymer resin; (B) about 1 to about 70 parts by weight of a polyester resin; (C) about 0.001 to about 10 parts by weight of a silicone oil, per 100 parts by weight of a base resin comprising (A) and (B); (D) about 3 to about 20 parts by weight of a bromine-containing flame retardant, per 100 parts by weight of a base resin comprising (A) and (B); and (E) about 0.1 to about 6 parts by weight of a flame retardant aid, per 100 parts by weight of a base resin comprising (A) and (B).
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: April 28, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Se Bum Son, Sung Hee Ahn, In Hwan Oh, Sung Duk Hwang
  • Patent number: 8999598
    Abstract: Disclosed is a molten carbonate fuel cell comprising a reinforced lithium aluminate matrix, a cathode, an anode, a cathode frame channel and an anode frame channel, wherein at least one of the cathode frame channel and the anode frame channel is filled with a lithium source. Disclosed also are a method for producing the same, and a method for supplying a lithium source. The molten carbonate fuel cell in which a lithium source is supplied to an electrode has high mechanical strength and maintains stability of electrolyte to allow long-term operation.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: April 7, 2015
    Assignee: Korea Institute of Science & Technology
    Inventors: Sung Pil Yoon, In Hwan Oh, Jong Hee Han, Suk Woo Nam, Seong Cheol Jang, Shin Ae Song, Tae Won Lee, In Gab Chang, Bo Hyun Ryu
  • Patent number: 8927163
    Abstract: Disclosed are an apparatus for portable fuel cell and an operation method thereof, wherein stabilization state after initial operation can be determined using OCV.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: January 6, 2015
    Assignee: Korea Institute of Science and Technology
    Inventors: Jaeyoung Lee, Suk-Woo Nam, Tae Hoon Lim, In Hwan Oh, Sung Pil Yoon, Seong Ahn Hong, Jonghee Han, Hyoung-Juhn Kim, Eun Ae Cho, Hyung Chul Hahm, Yeong Cheon Kim