Patents by Inventor Young Kyu Hwang

Young Kyu Hwang 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: 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: 10371881
    Abstract: An optical member including a light guide plate including a surface disposed on a plane defined by a first direction and a second direction crossing the first direction, a low refractive index pattern disposed on the surface of the light guide plate and including an opening for exposing the surface of the light guide plate, a wavelength conversion layer disposed on the low refractive index pattern, and a passivation layer disposed on the wavelength conversion layer and covering a side surface of the wavelength conversion layer and a side surface of the low refractive index pattern at least one side portion. The low refractive index pattern has a lower index of refraction than the light guide plate, and a ratio of an area occupied by the low refractive index pattern to an area of the surface of the light guide plate decreases in the first direction.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: August 6, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seong Yong Hwang, Young Min Park, Ju Young Yoon, Sung Kyu Shim, Sang Won Lee
  • Patent number: 10358369
    Abstract: A treated water tank in oil sand plant, comprising a first housing; an inlet provided in the first housing, through which a treated water flows in; an outlet provided in the first housing, through which the treated water stored is discharged; a second housing installed in the upper side of the first housing and communicated with the first housing by a pressure-controlling pipe; a gas discharge pipe provided in one side of the second housing for opening to the air; and a gas curtain provided in the second housing for preventing the treated water stored in the first housing from being in contact with the air. The treated water tank in oil sand plant according to the present invention simplifies the process of producing the treated water to be reused from the production water, reduces the risk of environment contamination due to the reuse of more purified treated water.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: July 23, 2019
    Assignee: Vitzrotech Co., Ltd.
    Inventors: Byung-Ho Rhee, Lee-Ho Hwang, Sang-Hoon Park, Moon-Kyu Choi, Young-Hwa Cho
  • Publication number: 20190217277
    Abstract: The present invention relates to an olefin metathesis reaction catalyst where rhenium (Re) oxide or molybdenum (Mo) oxide is supported, as a catalyst main component, on a surface-modified mesoporous silica or mesoporous alumina support, and a preparation method therefor. The olefin metathesis reaction catalyst of the present invention allows highly efficient metathesis of long-chain unsaturated hydrocarbons having at least eight carbons at a low temperature of 150° C. or lower. The catalyst can be separated readily from reaction solution, regenerated at a low temperature of 400° C. or lower by removing toxins accumulated on it during the metathesis reaction, and used repeatedly in metathesis reaction many times, thereby being made good use in commercial olefin metathesis processes.
    Type: Application
    Filed: November 9, 2017
    Publication date: July 18, 2019
    Inventors: Jong Yeol Jeon, Man Jae Gil, Dong Won Hwang, Young Kyu Hwang, Yoo Han Han
  • Patent number: 10330058
    Abstract: Disclosed is an air filter using high density filter paper. The filter paper may include a thermally bonded non-woven fabric filter paper 10 having air permeability to filter foreign materials of passed polluted air and change the polluted air to fresh air. The non-woven fabric filter paper includes wrinkled portions 10-1 and 10-N that are folded at a predetermined interval. A thickness of the wrinkle portions 10-1 and 10-N are provided with dense layers 15 and 17 comprising a first polyethylene terephthalate (PET) fiber 20-2 that can shrink by heat and a second polyethylene terephthalate (PET) fiber 20-1 that deforms upon by heat treatment.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: June 25, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Korea Filtration Technologies Co., Ltd.
    Inventors: Tae-Min Yun, Chul-Kyu Kwack, Young-Hae Kim, Kyung-Ho Hwang
  • Publication number: 20190158116
    Abstract: A method of decoding a low density parity check (LDPC) code, includes dividing a parity check matrix of the LDPC code, into a plurality of sub blocks. The method further includes, for each of a plurality of decoding iterations, performing a node operation of each of target sub blocks among the plurality of sub blocks, the target sub blocks corresponding to a present decoding iteration among the plurality of decoding iterations, in a decoding schedule, estimating a reliability of each of the target sub blocks, based on a result of the node operation of each of the target sub blocks, and adjusting the decoding schedule, based on the reliability of each of the target sub blocks.
    Type: Application
    Filed: June 29, 2018
    Publication date: May 23, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Myung-Kyu LEE, Jae-Hong KIM, Ki-Jun LEE, Jun-Jin KONG, Hong-Rak SON, Se-Jin LIM, Young-Jun HWANG
  • Patent number: 10294550
    Abstract: Heat resistant spheroidal graphite cast iron having an improved high temperature tensile strength includes carbon (C) in a range of 3.2-3.4 wt %, silicon (Si) in a range of 4.3-4.8 wt %, manganese (Mn) in a range of 0.2-0.3 wt %, molybdenum (Mo) in a range of 0.8-1.0 wt %, vanadium (V) in a range of 0.4-0.6 wt %, chrome (Cr) in a range of 0.2-0.4 wt %, niobium (Nb) in a range of 0.2-0.4 wt %, inevitable impurities, and a remainder of iron (Fe) based on a total weight of the heat resistant spheroidal graphite cast iron. The heat resistant spheroidal graphite cast iron further includes barium (Ba) in a range of 0.0045-0.0075 wt %. A content ratio of chrome (Cr) and barium (Ba) (Cr/Ba) is in a range from about 26 to about 89.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: May 21, 2019
    Assignee: DOOSAN INFRACORE CO., LTD
    Inventors: Young-Kyu Ju, Ki-Hwan Jung, Jong-Kwon Chung, Sik Yang, Jae-Hyoung Hwang, Dong-Seob Shim, Sang-Beom Kim
  • 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: 20180292196
    Abstract: A deformation sensing sensor as disclosed includes a conductive material inside the body thereof such that, by sensing a change in resistance or capacitance resulting from a deformation, a degree of deformation of the measurement object can be detected. The body includes an elastic layer, which has a corrugation formed on one surface thereof, and a conductive layer, which is formed on the other surface of the elastic layer using a conductive material. When the body is deformed in the lateral direction of the surface on which the corrugation is formed, the change in resistance of the conductive layer before and after the deformation, or the change in capacitance thereof is measured, thereby detecting the degree of deformation of the measurement object.
    Type: Application
    Filed: September 1, 2016
    Publication date: October 11, 2018
    Applicant: Gwangju Institute of Science and Technology
    Inventors: Heung Cho KO, Yun Jeong HEO, Young Kyu Hwang
  • 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
  • Patent number: 9844750
    Abstract: The invention relates to a cyclical method for producing a nitrogen fraction, the purity of which is greater than or equal to 95 mol %, and a hydrocarbon-enriched fraction from a filler containing nitrogen and a hydrocarbon, said method using a specific class of porous hybrid solids as an adsorbent in a pressure-swing adsorption (PSA) process. The invention also relates to equipment for implementing said method.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: December 19, 2017
    Assignees: TOTAL PETROCHEMICALS FRANCE, UNIVERSIDADE DO PORTO. (UPORTO) FACULDADE DE ENGENHARIA, KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Francis Luck, Catherine Leroi, Alvaro Fernandez, Ana Mafalda Almeida Peixoto Ribeiro, Joao Carlos Godinho De Faria Dos Santos, Alirio Egidio Rodrigues, Jong-San Chang, U-Hwang Lee, Young Kyu Hwang, Jean-Patrick Bonne
  • Patent number: 9827799
    Abstract: Disclosed herein is a transfer printing technology. A transfer printing substrate includes a plurality of pillar structures and a sacrificial layer applied thereon. In situ alignment of a transfer layer is performed by the pillar structures and a structural confinement by a concave structure formed on a bottom surface of the transfer layer corresponding to the pillar structures, or a chemical bond of the pillar structure and the transfer layer. In the in situ alignment by the structural confinement, the remaining sacrificial layer after being removed may serve as an adhesive component. The transfer process is performed by a separation of the bond by the sacrificial layer, a cutting of the pillar structures in the chemic bonding state of the pillar structures and the transfer layer, or a separation of the bond between the pillar structures and the handling substrate.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: November 28, 2017
    Assignee: Gwangju Institute of Science and Technology
    Inventors: Heung Cho Ko, Su Ok Yun, Jeong Pil Park, Suk Ho Kim, Young Kyu Hwang, Yujun Hyun, Hun Soo Jang, Yun Kyung Jeong