Patents by Inventor Nak-Cheon Jeong

Nak-Cheon Jeong 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: 11697104
    Abstract: Disclosed is a method for preparing a matrix containing metal-organic frameworks (MOFs), comprising the steps of: 1) mixing an organic ligand precursor solution and an anionic polymer-containing solution to produce a mixed solution; and 2) adding a metal salt to the mixture solution. In addition, the present disclosure provides a matrix containing MOFs prepared according to the preparation method, and an adsorbent comprising the same. Furthermore, a method for performing fluid separation by using a matrix containing MOFs prepared according to the preparation method is disclosed.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: July 11, 2023
    Assignee: DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Nak Cheon Jeong, Jeong Ho Lim, Eun Ji Lee
  • Patent number: 10228343
    Abstract: An electrochemical sensor for an analyte is provided. The electrochemical sensor includes CDMOF-2. The CDMOF-2 is capable of binding reversibly to CO2 as an analyte, thereby quantitatively detecting the analyte in a mixture. The CDMOF-2 is formed from reaction of ?-cyclodextrin with RbOH in the presence of methanol.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: March 12, 2019
    Assignees: Northwestern University, King Abdulaziz City for Science and Technology (KACST)
    Inventors: James Fraser Stoddart, Jeremiah J. Gassensmith, Nak Cheon Jeong, Omar K. Farha
  • Patent number: 9287120
    Abstract: The present application relates to a method for dispersing quantum dots (QDs) or quantum wires in zeolite, to zeolite containing quantum dots or quantum wires dispersed by the method, and to a method for stabilizing quantum dots or quantum wires in zeolite.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: March 15, 2016
    Assignee: Sogang University Research Foundation
    Inventors: Kyung Byung Yoon, Hyun Sung Kim, Nak Cheon Jeong
  • Publication number: 20160061770
    Abstract: An electrochemical sensor for an analyte is provided. The electrochemical sensor includes CDMOF-2. The CDMOF-2 is capable of binding reversibly to CO2 as an analyte, thereby quantitatively detecting the analyte in a mixture. The CDMOF-2 is formed from reaction of ?-cyclodextrin with RbOH in the presence of methanol.
    Type: Application
    Filed: September 3, 2015
    Publication date: March 3, 2016
    Inventors: JAMES FRASER STODDART, JEREMIAH J. GASSENSMITH, NAK CHEON JEONG, OMAR K. FARHA
  • Patent number: 8771639
    Abstract: The present invention relates to a method for preparing composites of substrate-molecular sieve, in particular, to a method for preparing a composite of substrate-molecular sieve, which comprises applying a physical pressure to molecular sieve crystals against a substrate to form a chemical bond between the molecular sieve crystal and the substrate. The present invention requiring no solvents, reactors and other equipments enables molecular sieve crystals to be stably attached to the surface of substrates through various chemical bonds, particularly ionic present invention ensures the synthesis of substrate-molecular sieve composites with enhanced attachment rate, degree of lateral close packing (DCP) and attachment strength in more time-saving and energy-saving manners. The present method works well for molecular sieve crystals with lager sizes (e.g., more than 3 ?m) with no generation of parasitic crystals.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: July 8, 2014
    Assignee: Industry-University Cooperation Foundation Sogang University
    Inventors: Kyung Byung Yoon, Jin Seok Lee, Jae Hyun Kim, Young Ju Lee, Nak Cheon Jeong
  • Publication number: 20140008605
    Abstract: The present application relates to a method for dispersing quantum dots (QDs) or quantum wires in zeolite, to zeolite containing quantum dots or quantum wires dispersed by the method, and to a method for stabilizing quantum dots or quantum wires in zeolite.
    Type: Application
    Filed: January 19, 2012
    Publication date: January 9, 2014
    Applicant: SOGANG UNIVERSITY RESEARCH FOUNDATION
    Inventors: Kyung Byung Yoon, Hyun Sung Kim, Nak Cheon Jeong
  • Patent number: 8153543
    Abstract: A method for preparing a composite of zeolite-fiber substrate includes the steps of reacting a fiber substrate or a zeolite with a linking compound to form an intermediate of linking compound-fiber substrate or zeolite-linking compound, and preparing the composite of zeolite-linking compound-fiber substrate by linking the intermediate of linking compound-fiber substrate to the fiber substrate or linking the intermediate of zeolite-linking compound to the zeolite, in which the linking is induced by sonication.
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: April 10, 2012
    Assignee: Industry-University Cooperation Foundation Sogang University
    Inventors: Kyung Byung Yoon, Jin Seok Lee, Nak-Cheon Jeong
  • Publication number: 20090246122
    Abstract: The present invention relates to a method for preparing composites of substrate-molecular sieve, which comprises applying a physical pressure to molecular sieve crystals against a substrate to form a chemical bond between the molecular sieve crystal and the substrate. The present invention requiring no solvents, reactors and other equipments enables molecular sieve crystals to be stably attached to the surface of substrates through various chemical bonds, particularly ionic present invention ensures the synthesis of substrate-molecular sieve composites with enhanced attachment rate, degree of lateral close packing (DCP) and attachment strength in more time-saving method works well for molecular sieve crystals with lager sizes (e.g., more than 3 ?m) with no generation of parasitic crystals. Furthermore, the present invention shows excellent applicability to large substrates, enabling the mass production of substrate-molecular sieve composites.
    Type: Application
    Filed: January 4, 2008
    Publication date: October 1, 2009
    Inventors: Kyung Byung Yoon, Jin Seok Lee, Jae Hyun Kim, Young Ju Lee, Nak Cheon Jeong
  • Publication number: 20090101492
    Abstract: A method for preparing a composite of zeolite-fiber substrate includes the steps of reacting a fiber substrate or a zeolite with a linking compound to form an intermediate of linking compound-fiber substrate or zeolite-linking compound, and preparing the composite of zeolite-linking compound-fiber substrate by linking the intermediate of linking compound-fiber substrate to the fiber substrate or linking the intermediate of zeolite-linking compound to the zeolite, in which the linking is induced by sonication.
    Type: Application
    Filed: October 27, 2005
    Publication date: April 23, 2009
    Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION SOGANG
    Inventors: Kyung Byung Yoon, Jin-Seok Lee, Nak-Cheon Jeong