Patents by Inventor Jong San Chang

Jong San Chang 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: 12400879
    Abstract: A gas treatment system includes a first scrubber, a regenerative catalytic oxidizer (RCO) that treats gas that passes through the first scrubber, a second scrubber that treats the gas that passed through the regenerative catalytic oxidizer, and a dielectric barrier discharge (DBD) plasma reactor that treats the gas that passed through the second scrubber. The regenerative catalytic oxidizer includes a two-bed regenerative catalytic reactor.
    Type: Grant
    Filed: October 26, 2022
    Date of Patent: August 26, 2025
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Wonsu Lee, Kimoon Lee, Seungjun Lee, Jong san Chang, Joungwoo Han
  • Publication number: 20230274952
    Abstract: A gas treatment system includes a first scrubber, a regenerative catalytic oxidizer (RCO) that treats gas that passes through the first scrubber, a second scrubber that treats the gas that passed through the regenerative catalytic oxidizer, and a dielectric barrier discharge (DBD) plasma reactor that treats the gas that passed through the second scrubber. The regenerative catalytic oxidizer includes a two-bed regenerative catalytic reactor.
    Type: Application
    Filed: October 26, 2022
    Publication date: August 31, 2023
    Inventors: WONSU LEE, Kimoon LEE, Seungjum LEE, Jong san CHANG, Joungwoo HAN
  • Patent number: 11285455
    Abstract: The present invention relates to an organic-inorganic hybrid nanoporous material, maintaining a nanoporous skeleton structure formed by coordination of an organic ligand containing an aromatic compound to a trivalent central metal ion, and further having an intramolecular acid anhydride functional group modified on the aromatic compound of the nanoporous skeleton structure, and thereby exhibits selectivity for olefins, and an adsorbent comprising the same. Specifically, the organic-inorganic hybrid nanoporous material of the present invention exhibits an excellent olefin-selective adsorption capacity through differences in adsorption equilibrium and adsorption rate, and thus can be usefully employed in the separation of C2-C4 hydrocarbons.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: March 29, 2022
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Ji Woong Yoon, Jong San Chang, Young Kyu Hwang, Kyung Ho Cho, U Hwang Lee, Su Kyung Lee, Ji Sun Lee
  • Patent number: 11224856
    Abstract: Provided are a water and/or alcohol adsorbent including organic-inorganic hybrid nanoporous materials, and use thereof, and more particularly, a water and/or alcohol adsorbent having a high adsorption amount at a low relative humidity or partial pressure, of which desorption/regeneration is possible at a low temperature, the water and/or alcohol adsorbent including organic-inorganic hybrid nanoporous materials having 0.5 to 3 mol of a hydroxyl group (OH) or a hydroxide anion group (OH?) per 1 mol of a central metal ion, and use thereof.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: January 18, 2022
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Jong San Chang, U Hwang Lee, Young Kyu Hwang, Christian Serre, Thomas Devic, Amandine Cadiau, Norbert Stock, Nele Reimer, Michael T. Wharmby
  • Patent number: 10644350
    Abstract: Provided is a secondary battery having a battery case which accommodates an electrode assembly including a cathode, a anode, and a separator disposed between the cathode and the anode, together with an electrolyte, wherein one or more selected from the group consisting of the cathode, the anode, the separator, the electrolyte, and the interior of the battery case include, as a water adsorbent, a first organic-inorganic hybrid nanoporous material which may be regenerated by desorbing 70% or more of a total adsorption amount of adsorbed water at 150° C. or lower; and optionally, a second organic-inorganic hybrid nanoporous material, of which water adsorption capacity is higher than water desorption capacity at a relative humidity p/p0 of 0.3 or less (herein, p0 represents a saturated vapor pressure at an application temperature and p represents a vapor pressure upon adsorption).
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: May 5, 2020
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Jong San Chang, Young Kyu Hwang, Kyung Ho Cho, U Hwang Lee, Sue Kyung Lee, Do Young Hong, Dong Won Hwang
  • Publication number: 20190291075
    Abstract: The present invention relates to an organic-inorganic hybrid nanoporous material, maintaining a nanoporous skeleton structure formed by coordination of an organic ligand containing an aromatic compound to a trivalent central metal ion, and further having an intramolecular acid anhydride functional group modified on the aromatic compound of the nanoporous skeleton structure, and thereby exhibits selectivity for olefins, and an adsorbent comprising the same. Specifically, the organic-inorganic hybrid nanoporous material of the present invention exhibits an excellent olefin-selective adsorption capacity through differences in adsorption equilibrium and adsorption rate, and thus can be usefully employed in the separation of C2-C4 hydrocarbons.
    Type: Application
    Filed: October 17, 2017
    Publication date: September 26, 2019
    Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Ji Woong YOON, Jong San CHANG, Young Kyu HWANG, Kyung Ho CHO, U Hwang LEE, Su Kyung LEE, Ji Sun LEE
  • Patent number: 10253012
    Abstract: The present invention relates to a method and apparatus for preparation of lactide using a lactide purification process, comprising introducing an aqueous solution comprising lactic acid into a reactor filled with a catalyst and reacting the same to produce crude lactide vapor; and purifying the crude lactide vapor to produce lactide crystals, wherein a first purification comprises collecting and crystallizing the crude lactide vapor using a first solvent to produce lactide crystals, and separating the lactide crystal from a residue through filtration.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: April 9, 2019
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Dong Won Hwang, Jong San Chang, Young Kyu Hwang, U Hwang Lee, Do Young Hong, Su Kyung Lee, Kyung Ho Cho, Pravin Pandharinath Upare
  • Patent number: 10227668
    Abstract: The present invention relates to a method for preparing fructose or xylulose from biomass comprising glucose or xylose, and a method for separating a mixture of glucose and fructose and a mixture of xylose and xylulose.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: March 12, 2019
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Dong Won Hwang, Pravin Pandharinath Upare, Young Kyu Hwang, In Taek Hwang, Jong San Chang, Do Young Hong, U Hwang Lee
  • Patent number: 10195592
    Abstract: The present invention relates to a catalyst for transfer hydrogenation, which is formed of a metal-organic framework having an MOF-808 based X-ray diffraction pattern. A high crystalline porous MOF-808 based metal-organic framework exhibits excellent performance in the transfer hydrogenation of ethyl levulinate (EL) at high and low temperature.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: February 5, 2019
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Young Kyu Hwang, Jong San Chang, Do Young Hong, Dong Won Hwang, U Hwang Lee, Kyung Ho Cho, Anil Haribhau Valekar, Su Kyung Lee
  • Publication number: 20180339955
    Abstract: The present invention relates to a method for preparing mannitol which includes performing the hydrogenation of fructose in the presence of a Cu-based nanocomposite catalyst, for example, a nanocomposite catalyst of CuO(x)/SiO2(100-x) (wherein x is a real number from 20 to 90), using butanol as a solvent.
    Type: Application
    Filed: May 29, 2018
    Publication date: November 29, 2018
    Inventors: Dong Won HWANG, Pravin Pandharinath UPARE, Young Kyu HWANG, Do Young HONG, Jong San CHANG, U Hwang LEE, Su Kyung LEE, Kyung Ho CHO
  • Patent number: 10138185
    Abstract: The present invention relates to a method for preparing mannitol which includes performing the hydrogenation of fructose in the presence of a Cu-based nanocomposite catalyst, for example, a nanocomposite catalyst of CuO(x)/SiO2(100-x) (wherein x is a real number from 20 to 90), using butanol as a solvent.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: November 27, 2018
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Dong Won Hwang, Pravin Pandharinath Upare, Young Kyu Hwang, Do Young Hong, Jong San Chang, U Hwang Lee, Su Kyung Lee, Kyung Ho Cho
  • Publication number: 20180261882
    Abstract: Provided is a secondary battery having a battery case which accommodates an electrode assembly including a cathode, a anode, and a separator disposed between the cathode and the anode, together with an electrolyte, wherein one or more selected from the group consisting of the cathode, the anode, the separator, the electrolyte, and the interior of the battery case include, as a water adsorbent, a first organic-inorganic hybrid nanoporous material which may be regenerated by desorbing 70% or more of a total adsorption amount of adsorbed water at 150° C. or lower; and optionally, a second organic-inorganic hybrid nanoporous material, of which water adsorption capacity is higher than water desorption capacity at a relative humidity p/p0 of 0.3 or less (herein, p0 represents a saturated vapor pressure at an application temperature and p represents a vapor pressure upon adsorption).
    Type: Application
    Filed: March 16, 2018
    Publication date: September 13, 2018
    Inventors: Jong San CHANG, Young Kyu Hwang, Kyung Ho Cho, U Hwang Lee, Sue Kyung Lee, Do Young Hong, Dong Won Hwang
  • Patent number: 9988362
    Abstract: The present invention relates to a method for preparing for a furan derivative from biomass, comprising step (1) of preparing 5-hydroxymethylfurfural by reacting biomass and a solid acid catalyst in butanol; and step (2) of preparing a furan derivative by reacting the butanol solution of 5-hydroxymethylfurfural, obtained in step (1), with a hydrogenation catalyst.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: June 5, 2018
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Dong Won Hwang, Pravin P. Upare, Jong San Chang, Young Kyu Hwang, U Hwang Lee, Do Young Hong
  • Publication number: 20180133684
    Abstract: Provided are a water and/or alcohol adsorbent including organic-inorganic hybrid nanoporous materials, and use thereof, and more particularly, a water and/or alcohol adsorbent having a high adsorption amount at a low relative humidity or partial pressure, of which desorption/regeneration is possible at a low temperature, the water and/or alcohol adsorbent including organic-inorganic hybrid nanoporous materials having 0.5 to 3 mol of a hydroxyl group (OH) or a hydroxide anion group (OH?) per 1 mol of a central metal ion, and use thereof.
    Type: Application
    Filed: May 18, 2016
    Publication date: May 17, 2018
    Inventors: Jong San CHANG, U Hwang LEE, Young Kyu HWANG, Christian SERRE, Thomas DEVIC, Amandine CADIAU, Norbert STOCK, Nele REIMER, Michael T. WHARMBY
  • Patent number: 9861932
    Abstract: Disclosed herein is polymer membrane for gas separation or concentration which contains a hybrid nanoporous material, an application thereof, and a manufacturing method thereof. Especially, the hybrid nanoporous material has a window size of 4 ? to 15 ? or has gas adsorption characteristics for a gas to be separated, which is different from those for other gases, and thus the present invention may provide the polymer membrane having improved gas permeation selectivity, an application thereof, and a manufacturing method thereof.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: January 9, 2018
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: U-Hwang Lee, Jong San Chang, Young Kyu Hwang, You In Park, Hye Rim Song, Seung Eun Nam, Do Young Hong, Sue Kyung Lee, Kyung Ho Cho
  • Publication number: 20180002769
    Abstract: The present invention relates to a method for preparing fructose or xylulose from biomass comprising glucose or xylose, and a method for separating a mixture of glucose and fructose and a mixture of xylose and xylulose.
    Type: Application
    Filed: June 27, 2017
    Publication date: January 4, 2018
    Inventors: Dong Won HWANG, Pravin Pandharinath UPARE, Young Kyu HWANG, In Taek HWANG, Jong San CHANG, Do Young HONG, U Hwang LEE
  • Publication number: 20170320790
    Abstract: The present invention relates to a catalyst for transfer hydrogenation, which is formed of a metal-organic framework having an MOF-808 based X-ray diffraction pattern. A high crystalline porous MOF-808 based metal-organic framework exhibits excellent performance in the transfer hydrogenation of ethyl levulinate (EL) at high and low temperature.
    Type: Application
    Filed: May 2, 2017
    Publication date: November 9, 2017
    Inventors: Young Kyu Hwang, Jong San Chang, Do Young Hong, Dong Won Hwang, U Hwang Lee, Kyung Ho Cho, Anil Haribhau Valekar, Su Kyung Lee
  • Publication number: 20170101390
    Abstract: The present invention relates to a method and apparatus for preparation of lactide using a lactide purification process, comprising introducing an aqueous solution comprising lactic acid into a reactor filled with a catalyst and reacting the same to produce crude lactide vapor; and purifying the crude lactide vapor to produce lactide crystals, wherein a first purification comprises collecting and crystallizing the crude lactide vapor using a first solvent to produce lactide crystals, and separating the lactide crystal from a residue through filtration.
    Type: Application
    Filed: October 11, 2016
    Publication date: April 13, 2017
    Inventors: Dong Won HWANG, Jong San CHANG, Young Kyu HWANG, U Hwang LEE, Do Young HONG, Su Kyung LEE, Kyung Ho CHO, Pravin Pandharinath UPARE
  • Publication number: 20160304480
    Abstract: The present invention relates to a method for preparing for a furan derivative from biomass, comprising step (1) of preparing 5-hydroxymethylfurfural by reacting biomass and a solid acid catalyst in butanol; and step (2) of preparing a furan derivative by reacting the butanol solution of 5-hydroxymethylfurfural, obtained in step (1), with a hydrogenation catalyst.
    Type: Application
    Filed: April 14, 2016
    Publication date: October 20, 2016
    Inventors: Dong Won HWANG, Pravin P. UPARE, Jong San CHANG, Young Kyu HWANG, U Hwang LEE, Do Young HONG
  • Publication number: 20160158708
    Abstract: Disclosed herein is polymer membrane for gas separation or concentration which contains a hybrid nanoporous material, an application thereof, and a manufacturing method thereof. Especially, the hybrid nanoporous material has a window size of 4 ? to 15 ? or has gas adsorption characteristics for a gas to be separated, which is different from those for other gases, and thus the present invention may provide the polymer membrane having improved gas permeation selectivity, an application thereof, and a manufacturing method thereof.
    Type: Application
    Filed: December 4, 2015
    Publication date: June 9, 2016
    Inventors: U-Hwang LEE, Jong San CHANG, Young Kyu HWANG, You In PARK, Hye Rim SONG, Seung Eun NAM, Do Young HONG, Sue Kyung LEE, Kyung Ho CHO