Patents by Inventor Minkee Choi

Minkee 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: 12194447
    Abstract: A catalyst for a hydrogenation reaction including a polymer support and a catalytic component supported on the polymer support. The polymer support consists of a repeating unit represented by any one of Formulae 5 and 7 to 13.
    Type: Grant
    Filed: November 17, 2023
    Date of Patent: January 14, 2025
    Assignees: LG Chem, Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Myungji Suh, Dong Hyun Ko, Minkee Choi, Kyunglim Hyun
  • Publication number: 20240335826
    Abstract: A method for manufacturing a catalyst for a hydrogenation reaction, the method including: preparing a polymer support including a repeating unit of Formula 1, and supporting a catalytic component on the polymer support: wherein in Formula 1, means a point where the repeating units are linked, L1, L2 and L3 are O, R1 and R2 are the same as or different from each other, and are each independently hydrogen, an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 20 carbon atoms, m is 0 or 1, and p and q are each independently an integer from 0 to 4.
    Type: Application
    Filed: June 12, 2024
    Publication date: October 10, 2024
    Inventors: Myungji Suh, Dong Hyun Ko, Minkee Choi, Yeonwoo Choi
  • Publication number: 20240299919
    Abstract: A catalyst for a hydrogenation reaction including: a polymer support; and a catalytic component supported on the polymer support. The polymer support comprises a repeating unit represented by Formula 1.
    Type: Application
    Filed: May 15, 2024
    Publication date: September 12, 2024
    Inventors: Myungji Suh, Dong Hyun Ko, Minkee Choi, Songhyun Lee
  • Patent number: 12053764
    Abstract: A catalyst for a hydrogenation reaction including: a polymer support; and a catalytic component supported on the polymer support. The polymer support includes a repeating unit represented by Formula 1.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: August 6, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Myungji Suh, Dong Hyun Ko, Minkee Choi, Yeonwoo Choi
  • Publication number: 20240157308
    Abstract: Disclosed are a microporous graphene oxide sheet, a method of manufacturing the same, a dispersion including the same, and a membrane including a stack of the microporous graphene oxide sheet, the microporous graphene oxide sheet having an average size of pores ranging from about 0.1 nm to about 2 nm, wherein a spacing between pores is about 0.3 nm to about 10 nm, a standard deviation for the spacing between pores is less than or equal to about 5 nm.
    Type: Application
    Filed: November 15, 2023
    Publication date: May 16, 2024
    Inventors: MinKee Choi, Chaehoon Kim
  • Publication number: 20240082829
    Abstract: A catalyst for a hydrogenation reaction including a polymer support and a catalytic component supported on the polymer support. The polymer support consists of a repeating unit represented by any one of Formulae 5 and 7 to 13.
    Type: Application
    Filed: November 17, 2023
    Publication date: March 14, 2024
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Myungji SUH, Dong Hyun KO, Minkee CHOI, Kyunglim HYUN
  • Patent number: 11872546
    Abstract: A catalyst for a hydrogenation reaction including: a polymer support; and a catalytic component supported on the polymer support. The polymer support includes a repeating unit represented by Formula 1 or 2.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: January 16, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Myungji Suh, Dong Hyun Ko, Minkee Choi, Kyunglim Hyun
  • Publication number: 20230372906
    Abstract: The catalyst for a hydrogenation reaction according to an exemplary embodiment of the present application comprises: a porous carrier; a catalytic component supported on the porous carrier; and a polymer provided on at least a part of the surfaces of the porous carrier and the catalytic component and comprising the repeating unit represented by Chemical Formula 1.
    Type: Application
    Filed: June 24, 2022
    Publication date: November 23, 2023
    Inventors: Sunhwan HWANG, Dong Hyun KO, Kyong Yong CHA, Young Hwan PARK, Minkee CHOI
  • Publication number: 20230173462
    Abstract: A catalyst for decomposing perfluorinated compounds includes an alumina carrier, at least one metal carried on the alumina carrier and selected from the group consisting of Zn, Ni, W, Zr, Ti, Ga, Nb, Co, Mo, V, Cr, Mn, Fe, and Cu, S carried on the alumina carrier, and rare-earth metals carried on the alumina carrier.
    Type: Application
    Filed: December 1, 2022
    Publication date: June 8, 2023
    Applicants: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Joungwoo HAN, Minkee CHOI, Seongyun RYU, Jongsan CHANG, Myungwon OH, Seungjun LEE
  • Publication number: 20220402762
    Abstract: Provided are a 2-dimensional microporous graphene and a method for preparing the same. The 2-dimensional microporous graphene has an average pore size of about 0.1 nm to about 2 nm, interpore spacing of about 0.3 nm to about 10 nm, and a standard deviation of the interpore spacing of less than or equal to about 5 nm.
    Type: Application
    Filed: June 15, 2022
    Publication date: December 22, 2022
    Inventors: MinKee CHOI, Chaehoon KIM
  • Patent number: 11433373
    Abstract: Provided here are adsorbent compositions containing polyvinyl alcohol-bonded pellets of zeolite templated carbon. Also provided here are methods of producing adsorbent compositions by forming an aqueous mixture containing a binder, water, and zeolite-templated carbon; subjecting the aqueous mixture to a drying process to remove the water and form a dry mixture of the binder and the zeolite-templated carbon, and compacting the dry mixture of the binder and the zeolite-templated carbon to form the binder-bonded pellets of the zeolite templated carbon.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: September 6, 2022
    Inventors: Yuguo Wang, Rashid M. Othman, Minkee Choi, Seokin Choi
  • Publication number: 20220134323
    Abstract: A catalyst for a hydrogenation reaction including: a polymer support; and a catalytic component supported on the polymer support. The polymer support comprises a repeating unit represented by Formula 1.
    Type: Application
    Filed: July 13, 2020
    Publication date: May 5, 2022
    Inventors: Myungji Suh, Dong Hyun Ko, Minkee Choi, Songhyun Lee
  • Publication number: 20220118432
    Abstract: A catalyst for a hydrogenation reaction including: a polymer support; and a catalytic component supported on the polymer support. The polymer support includes a repeating unit represented by Formula 1 or 2.
    Type: Application
    Filed: July 13, 2020
    Publication date: April 21, 2022
    Inventors: Myungji Suh, Dong Hyun Ko, Minkee Choi, Kyunglim Hyun
  • Publication number: 20220105501
    Abstract: A catalyst for a hydrogenation reaction including: a polymer support; and a catalytic component supported on the polymer support. The polymer support includes a repeating unit represented by Formula 1.
    Type: Application
    Filed: July 13, 2020
    Publication date: April 7, 2022
    Inventors: Myungji SUH, Dong Hyun KO, Minkee CHOI, Yeonwoo CHOI
  • Patent number: 11208327
    Abstract: A method for the large-scale synthesis of a zeolite-templated carbon (ZTC). The method includes the steps of: introducing a bed material comprising a zeolite to a fluidized bed reactor and heating the bed material to a temperature between 550° C. and 800° C.; fluidizing the bed material with a fluidizing gas and maintaining the temperature of the bed material between 550° C. and 800° C.; introducing an organic carbon precursor while fluidizing the zeolite for a period of time such that carbon is deposited on the zeolite by chemical vapor deposition to produce a zeolite-carbon composite; and treating the zeolite-carbon composite with an acid solution such that the zeolite template is dissolved and the ZTC is obtained.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: December 28, 2021
    Inventors: Yuguo Wang, Rashid M. Othman, Minkee Choi, Seokin Choi
  • Publication number: 20210214224
    Abstract: A method for the large-scale synthesis of a zeolite-templated carbon (ZTC). The method includes the steps of: introducing a bed material comprising a zeolite to a fluidized bed reactor and heating the bed material to a temperature between 550° C. and 800° C.; fluidizing the bed material with a fluidizing gas and maintaining the temperature of the bed material between 550° C. and 800° C.; introducing an organic carbon precursor while fluidizing the zeolite for a period of time such that carbon is deposited on the zeolite by chemical vapor deposition to produce a zeolite-carbon composite; and treating the zeolite-carbon composite with an acid solution such that the zeolite template is dissolved and the ZTC is obtained.
    Type: Application
    Filed: January 14, 2020
    Publication date: July 15, 2021
    Applicants: SAUDI ARABIAN OIL COMPANY, Korea Advanced Institute of Science and Technology
    Inventors: Yuguo WANG, Rashid M. OTHMAN, Minkee CHOI, Seokin CHOI
  • Patent number: 11027256
    Abstract: A core-shell type amine-based carbon dioxide adsorbent is described, including a chelating agent resistant to oxygen and sulfur dioxide, to inhibit oxidative decomposition of amine. As a core, a porous support is employed on which an amine compound is immobilized, and, as a shell, an amine layer resistant to inactivity by sulfur dioxide is utilized. Such adsorbent exhibits high oxidation resistance because the chelating agent functions to remove a variety of transition metal impurities catalytically acting on amine oxidation. In addition, the sulfur dioxide-resistant amine layer of the shell selectively adsorbs sulfur dioxide to protect the amine compound of the core and, at the same time, the amine compound of the core selectively adsorbs only carbon dioxide. Sulfur dioxide adsorbed on the shell is readily desorbable therefrom at about 110° C. and thus remarkably improved regeneration stability is obtained during temperature-swing adsorption (TSA) processes in which sulfur dioxide is present.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: June 8, 2021
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Minkee Choi, Woosung Choi, Chaehoon Kim
  • Patent number: 10793785
    Abstract: The present invention relates to a hydrocracking catalyst based on hierarchically porous beta-zeolite, a method of preparing the same, and a method of producing bio-jet fuel from triglyceride-containing biomass by use of the hydrocracking catalyst, and includes methods comprising preparing a hydrocracking catalyst by supporting a metallic active component on a hierarchically porous beta-zeolite support, and converting n-paraffins, produced from triglyceride-containing biomass, into bio-jet fuel by hydrocracking in the presence of the prepared hydrocracking catalyst. When the hydrocracking catalyst based on hierarchically porous beta-zeolite is used, the residence time of the reactant and the product in the zeolite crystals may be reduced due to additional mesopores formed in the zeolite, and thus bio-jet fuel may be produced in high yield from n-paraffin feedstock produced from triglyceride-containing biomass.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: October 6, 2020
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yong Keun Chang, Minkee Choi, Myoung Yeob Kim
  • Publication number: 20200290016
    Abstract: Provided here are adsorbent compositions containing polyvinyl alcohol-bonded pellets of zeolite templated carbon. Also provided here are methods of producing adsorbent compositions by forming an aqueous mixture containing a binder, water, and zeolite-templated carbon; subjecting the aqueous mixture to a drying process to remove the water and form a dry mixture of the binder and the zeolite-templated carbon, and compacting the dry mixture of the binder and the zeolite-templated carbon to form the binder-bonded pellets of the zeolite templated carbon.
    Type: Application
    Filed: December 2, 2019
    Publication date: September 17, 2020
    Applicants: Saudi Arabian Oil Company, Korea Advanced Institute of Science and Technology
    Inventors: Yuguo WANG, Rashid M. OTHMAN, Minkee CHOI, Seokin CHOI
  • Publication number: 20200206719
    Abstract: A core-shell type amine-based carbon dioxide adsorbent is described, including a chelating agent resistant to oxygen and sulfur dioxide, to inhibit oxidative decomposition of amine. As a core, a porous support is employed on which an amine compound is immobilized, and, as a shell, an amine layer resistant to inactivity by sulfur dioxide is utilized. Such adsorbent exhibits high oxidation resistance because the chelating agent functions to remove a variety of transition metal impurities catalytically acting on amine oxidation. In addition, the sulfur dioxide-resistant amine layer of the shell selectively adsorbs sulfur dioxide to protect the amine compound of the core and, at the same time, the amine compound of the core selectively adsorbs only carbon dioxide. Sulfur dioxide adsorbed on the shell is readily desorbable therefrom at about 110° C. and thus remarkably improved regeneration stability is obtained during temperature-swing adsorption (TSA) processes in which sulfur dioxide is present.
    Type: Application
    Filed: March 6, 2020
    Publication date: July 2, 2020
    Inventors: Minkee CHOI, Woosung CHOI, Chaehoon KIM