Patents by Inventor Jeong Geol Na

Jeong Geol Na 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).

  • Publication number: 20230123029
    Abstract: The present invention relates to ZIF nanoparticles introduced with three kinds of ligands, a method for preparing the same, a hybrid membrane including the same, and a gas separation method using the hybrid membrane. Nanoparticles of a zeolitic imidazolate framework (ZIF) into which three kinds of ligands are introduced, the nanoparticles comprising metal ions, and an organic ligand bound to the metal ion, wherein the organic ligand comprises an imidazole-based first organic ligand, alkylamine-based second organic ligand, and third organic ligand comprising at least one amine group substituted on the ring.
    Type: Application
    Filed: October 20, 2021
    Publication date: April 20, 2023
    Inventors: Jong Suk LEE, He Seong AN, Jin Won LEE, Jeong Geol NA
  • Patent number: 11608351
    Abstract: The present invention relates to nanoparticles including a crystal structure-controlled zeolitic imidazolate framework (ZIF) and a method of producing the same. Nanoparticles according to the present invention comprise: metal ions; and an organic ligand coupled to the metal ions, wherein the organic ligand includes an imidazolate-based organic ligand and an alkylamine-based organic ligand.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: March 21, 2023
    Inventors: Jong Suk Lee, Kie Yong Cho, Jin Won Lee, Byung Keun Oh, Jeong Geol Na, He Seong An, Ju Ho Shin
  • Patent number: 11484845
    Abstract: The present invention relates to a hybrid membrane mixed with nanoparticles including a zeolitic imidazolate framework (ZIF), and a gas separation method using the same. A hybrid membrane according to the present invention comprises a polymer matrix, and nanoparticles which are dispersed in the polymer matrix and include the ZIF.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: November 1, 2022
    Inventors: Jong Suk Lee, Kie Yong Cho, Jin Won Lee, Byung Keun Oh, Jeong Geol Na, He Seong An
  • Publication number: 20200131214
    Abstract: The present invention relates to nanoparticles including a crystal structure-controlled zeolitic imidazolate framework (ZIF) and a method of producing the same. Nanoparticles according to the present invention comprise: metal ions; and an organic ligand coupled to the metal ions, wherein the organic ligand includes an imidazolate-based organic ligand and an alkylamine-based organic ligand.
    Type: Application
    Filed: October 22, 2019
    Publication date: April 30, 2020
    Inventors: Jong Suk Lee, Kie Yong Cho, Jin Won Lee, Byung Keun Oh, Jeong Geol Na, He Seong An, Ju Ho Shin
  • Publication number: 20200122095
    Abstract: The present invention relates to a hybrid membrane mixed with nanoparticles including a zeolitic imidazolate framework (ZIF), and a gas separation method using the same. A hybrid membrane according to the present invention comprises a polymer matrix, and nanoparticles which are dispersed in the polymer matrix and include the ZIF.
    Type: Application
    Filed: October 22, 2019
    Publication date: April 23, 2020
    Inventors: Jong Suk LEE, Kie Yong CHO, Jin Won LEE, Byung Keun OH, Jeong Geol NA, He Seong AN
  • Patent number: 8999041
    Abstract: An apparatus for separating carbon dioxide is provided. The apparatus includes: an absorption column in which carbon dioxide in off-gas is allowed to react with an absorbent solution so as to strip the carbon dioxide from the off-gas; a regeneration column in which the carbon dioxide is removed from the absorbent solution to regenerate the absorbent solution; and an ion-exchange column including a chamber having a cathode chamber space that receives the absorbent solution from the absorption column and an anode chamber space that receives the absorbent solution from the regeneration column, the ion-exchange column further including a permeable membrane that divides the chamber into the cathode chamber space and the anode chamber space.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: April 7, 2015
    Assignee: Korea Institute of Energy Research
    Inventors: Jong Nam Kim, Kwang Bok Yi, Chang Hyun Ko, Jong Ho Park, Jeong Geol Na
  • Patent number: 8722008
    Abstract: Disclosed is a method for upgrade-processing carbon black produced by performing a pyrolysis on waste tires and, more particularly to, a method of upgrading carbon black which includes removing iron wires and fibers from carbon black produced by performing a pyrolysis on waste tires with a magnetic separator and a gravity separator and then subjecting the carbon black to micronization, heating, and acid treatment to upgrade the carbon black. The method for upgrade-processing carbon black produced by performing a pyrolysis on waste tires includes producing an inorganic salt by treating carbon black produced by performing a pyrolysis on waste tires with an acid solution to produce an inorganic salt from an inorganic substance contained in the carbon black.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: May 13, 2014
    Assignee: Korea Institute of Energy Research
    Inventors: Soo Hyun Chung, Jeong Geol Na
  • Patent number: 8513475
    Abstract: The present invention relates to a method in which a catalytic reaction is used in order to produce hydrocarbons from renewable starting material derived from biological organisms such as vegetable lipids, animal lipids, and lipids extracted from macroalgae and microalgae, and more specifically relates to a method for selectively making a hydrocarbon, which is suitable for making gasoline or diesel, by removing the oxygen contained in the starting material without consuming hydrogen. In the present invention, the production takes place by bringing the starting material into contact with hydrotalcite, which constitutes a catalyst, thereby removing oxygen via a decarboxylation or decarbonylation reaction; and the starting material is one or more such material selected from triglycerides, fatty acids, and fatty acid derivatives obtained from a renewable source of supply originating from a biological organism.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: August 20, 2013
    Assignee: Korea Institute of Energy Research
    Inventors: Chang-Hyun Ko, Jeong-Geol Na, Jong-Nam Kim, Kwang-Bok Yi, Sung-Youl Park, Jong-Ho Park, Hee-Tae Beum, Bo-Eun Yi
  • Publication number: 20120263641
    Abstract: Disclosed is a method for upgrade-processing carbon black produced by performing a pyrolysis on waste tires and, more particularly to, a method of upgrading carbon black which includes removing iron wires and fibers from carbon black produced by performing a pyrolysis on waste tires with a magnetic separator and a gravity separator and then subjecting the carbon black to micronization, heating, and acid treatment to upgrade the carbon black. The method for upgrade-processing carbon black produced by performing a pyrolysis on waste tires includes producing an inorganic salt by treating carbon black produced by performing a pyrolysis on waste tires with an acid solution to produce an inorganic salt from an inorganic substance contained in the carbon black.
    Type: Application
    Filed: December 3, 2010
    Publication date: October 18, 2012
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Soo Hyun Chung, Jeong Geol Na
  • Publication number: 20120253091
    Abstract: The present invention relates to a method in which a catalytic reaction is used in order to produce hydrocarbons from renewable starting material derived from biological organisms such as vegetable lipids, animal lipids, and lipids extracted from macroalgae and microalgae, and more specifically relates to a method for selectively making a hydrocarbon, which is suitable for making gasoline or diesel, by removing the oxygen contained in the starting material without consuming hydrogen. In the present invention, the production takes place by bringing the starting material into contact with hydrotalcite, which constitutes a catalyst, thereby removing oxygen via a decarboxylation or decarbonylation reaction; and the starting material is one or more such material selected from triglycerides, fatty acids, and fatty acid derivatives obtained from a renewable source of supply originating from a biological organism.
    Type: Application
    Filed: November 17, 2010
    Publication date: October 4, 2012
    Inventors: Chang-Hyun Ko, Jeong-Geol Na, Jong-Nam Kim, Kwang-Bok Yi, Sung-Youl Park, Jong-Ho Park, Hee-Tae Beum, Bo-Eun Yi
  • Publication number: 20120240764
    Abstract: An apparatus for separating carbon dioxide is provided. The apparatus includes: an absorption column in which carbon dioxide in off-gas is allowed to react with an absorbent solution so as to strip the carbon dioxide from the off-gas; a regeneration column in which the carbon dioxide is removed from the absorbent solution to regenerate the absorbent solution; and an ion-exchange column including a chamber having a cathode chamber space that receives the absorbent solution from the absorption column and an anode chamber space that receives the absorbent solution from the regeneration column, the ion-exchange column further including a permeable membrane that divides the chamber into the cathode chamber space and the anode chamber space.
    Type: Application
    Filed: May 25, 2010
    Publication date: September 27, 2012
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Jong Nam Kim, Kwang Bok Yi, Chang Hyun Ko, Jong Ho Park, Jeong Geol Na