Patents by Inventor Gi-Seok Yang

Gi-Seok Yang 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: 11673121
    Abstract: Disclosed are a catalyst for oxidative coupling reaction of methane, a method for preparing the same, and a method for oxidative coupling reaction of methane using the same. The catalyst includes a mixed metal oxide, which is a mixed oxide of metals including sodium (Na), tungsten (W), manganese (Mn), barium (Ba) and titanium (Ti). It is possible to obtain paraffins, such as ethane and propane, and olefins, such as ethylene and propylene, with high efficiency through the method for oxidative coupling reaction of methane using the catalyst.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: June 13, 2023
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeong-Myeong Ha, Lien Thi Do, Jae Wook Choi, Dong Jin Suh, Young Hyun Yoon, Gi Seok Yang, Hyun Joo Lee
  • Publication number: 20220203334
    Abstract: Disclosed are a catalyst for oxidative coupling reaction of methane, a method for preparing the same, and a method for oxidative coupling reaction of methane using the same. The catalyst includes a mixed metal oxide, which is a mixed oxide of metals including sodium (Na), tungsten (W), manganese (Mn), barium (Ba) and titanium (Ti). It is possible to obtain paraffins, such as ethane and propane, and olefins, such as ethylene and propylene, with high efficiency through the method for oxidative coupling reaction of methane using the catalyst.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 30, 2022
    Inventors: Jeong-Myeong HA, Lien Thi DO, Jae Wook CHOI, Dong Jin SUH, Young Hyun YOON, Gi Seok YANG, Hyun Joo LEE
  • Patent number: 10815429
    Abstract: Provided is a method for deoxygenating an oxygenated hydrocarbon compound using a hydrogenation catalyst of immersing a metal in a carrier comprising a metal oxide and a hydrodeoxygenation catalyst of immersing a metal in a carrier comprising a metal oxide. It is possible to increase deoxygenation efficiency by combining the hydrogenation catalyst and the hydrodeoxygenation catalyst.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: October 27, 2020
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeong Myeong Ha, Jangwoo Seo, Jae Wook Choi, Jong Min Park, Young Hyun Yoon, Dong Jin Suh, Jungho Jae, Gi Seok Yang
  • Patent number: 10793537
    Abstract: Disclosed herein are a method of acid saccharification of biomass and a method of polymerization of furan compounds. The method of acid saccharification of biomass comprises recovering pentose-derived furan compounds produced during the acid saccharification process of biomass. The method of acid saccharification of biomass comprises introducing furan compounds into the acid saccharification process of biomass, to produce and recover furan polymers.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: October 6, 2020
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeong-Myeong Ha, Hyemin Yang, Ye Seul Jeong, Jae Wook Choi, Dong Jin Suh, Young Hyun Yoon, Gi Seok Yang, Ung Lee
  • Publication number: 20200071620
    Abstract: Provided is a method for deoxygenating an oxygenated hydrocarbon compound using a hydrogenation catalyst of immersing a metal in a carrier comprising a metal oxide and a hydrodeoxygenation catalyst of immersing a metal in a carrier comprising a metal oxide. It is possible to increase deoxygenation efficiency by combining the hydrogenation catalyst and the hydrodeoxygenation catalyst.
    Type: Application
    Filed: February 21, 2019
    Publication date: March 5, 2020
    Inventors: Jeong Myeong HA, Jangwoo SEO, Jae Wook CHOI, Jong Min PARK, Young Hyun YOON, Dong Jin SUH, Jungho JAE, Gi Seok YANG
  • Patent number: 9090830
    Abstract: Provided is a method for producing a high-carbon number saturated hydrocarbon compound by subjecting a mixed biomass solution containing benzyl phenyl ether (C6H5CH2OC6H5) to a two-step reaction process using a difunctional catalyst having an acid catalyst combined with a metal catalyst. The method allows development of a fuel substituting for and supplementing petroleum through decomposition and conversion of a biomass containing lignin or the like, thereby providing a non-petroleum based biofuel.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: July 28, 2015
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeong-Myeong Ha, Jae Wook Choi, Dong Jin Suh, Young Hyun Yoon, Ji Sun Yoon, Gi Seok Yang
  • Patent number: 8999881
    Abstract: The present disclosure relates to a Cu/Zn/Al catalyst and a method for preparing same. More particularly, the present disclosure relates to a Cu/Zn/Al catalyst including copper particles having high surface area and thus having excellent activity, which is prepared by: preparing a metal precursor solution by dissolving a copper precursor, a zinc precursor and an aluminum precursor in an organic solvent; mixing an aqueous basic solution with the metal precursor solution and precipitating metal particles; and preparing a Cu/Zn/Al catalyst by collecting and sintering the precipitated metal particles, and a method for preparing same.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: April 7, 2015
    Assignee: Korea Institute of Science and Technology
    Inventors: Adeline Budiman, Jeong-Myeong Ha, Jae Wook Choi, Young Hyun Yoon, Sung Min Kim, Gi Seok Yang, Dong Jin Suh
  • Patent number: 8889749
    Abstract: Provided is a method for preparing hydrophobic monolithic silica aerogel, comprising dipping monolithic wet silica gel obtained by using an alkoxide precursor into an alkylsilane solution as a dipping solution to perform hydrophobitization of the surface and inner part of the monolithic wet silica gel by a dipping process. The method is economical by virtue of the use of a small amount of alkylsilane compound and imparts hydrophobic property to monolithic silica aerogel simply in a cost efficient and time efficient manner. In addition, the method reduces shrinkage of hydrophobic monolithic silica aerogel, enables production of hydrophobic monolithic silica aerogel in a translucent form, and allows the hydrophobic monolithic silica aerogel to maintain low heat conductivity similar to the heat conductivity of hydrophilic silica aerogel. The hydrophobic monolithic silica aerogel may be used directly as a heat insulating panel by virtue of excellent hydrophobic property and heat insulating property.
    Type: Grant
    Filed: November 23, 2012
    Date of Patent: November 18, 2014
    Assignee: Korea Institute of Science and Technology
    Inventors: Dong Jin Suh, Gi Seok Yang, Jae Wook Choi, Young Hyun Yoon, Yun Su Lee, Jeong Myeong Ha
  • Publication number: 20140179966
    Abstract: Provided is a method for producing a high-carbon number saturated hydrocarbon compound by subjecting a mixed biomass solution containing benzyl phenyl ether (C6H5CH2OC6H5) to a two-step reaction process using a difunctional catalyst having an acid catalyst combined with a metal catalyst. The method allows development of a fuel substituting for and supplementing petroleum through decomposition and conversion of a biomass containing lignin or the like, thereby providing a non-petroleum based biofuel.
    Type: Application
    Filed: April 17, 2013
    Publication date: June 26, 2014
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeong-Myeong HA, Jae Wook CHOI, Dong Jin SUH, Young Hyun YOON, Ji Sun YOON, Gi Seok YANG
  • Publication number: 20140135210
    Abstract: The present disclosure relates to a Cu/Zn/Al catalyst and a method for preparing same. More particularly, the present disclosure relates to a Cu/Zn/Al catalyst including copper particles having high surface area and thus having excellent activity, which is prepared by: preparing a metal precursor solution by dissolving a copper precursor, a zinc precursor and an aluminum precursor in an organic solvent; mixing an aqueous basic solution with the metal precursor solution and precipitating metal particles; and preparing a Cu/Zn/Al catalyst by collecting and sintering the precipitated metal particles, and a method for preparing same.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 15, 2014
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Adeline BUDIMAN, Jeong-Myeong HA, Jae Wook CHOI, Young Hyun YOON, Sung Min KIM, Gi Seok YANG, Dong Jin SUH
  • Publication number: 20130296596
    Abstract: Provided is a method for preparing hydrophobic monolithic silica aerogel, comprising dipping monolithic wet silica gel obtained by using an alkoxide precursor into an alkylsilane solution as a dipping solution to perform hydrophobitization of the surface and inner part of the monolithic wet silica gel by a dipping process. The method is economical by virtue of the use of a small amount of alkylsilane compound and imparts hydrophobic property to monolithic silica aerogel simply in a cost efficient and time efficient manner. In addition, the method reduces shrinkage of hydrophobic monolithic silica aerogel, enables production of hydrophobic monolithic silica aerogel in a translucent form, and allows the hydrophobic monolithic silica aerogel to maintain low heat conductivity similar to the heat conductivity of hydrophilic silica aerogel. The hydrophobic monolithic silica aerogel may be used directly as a heat insulating panel by virtue of excellent hydrophobic property and heat insulating property.
    Type: Application
    Filed: November 23, 2012
    Publication date: November 7, 2013
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dong Jin Suh, Gi Seok Yang, Jae Wook Choi, Young Hyun Yoon, Yun Su Lee, Jeong Myeong Ha
  • Publication number: 20050032626
    Abstract: A method of catalysts reduction using non-thermal plasma according to the present invention is characterized to reduce catalysts containing metal compounds by bringing them into contact with hydrogen-containing gas under a non-thermal plasma state. In the method of catalysts reduction using non-thermal plasma according to the present invention, said non-thermal plasma is generated by dielectric barrier discharge. In the method of catalysts reduction using non-thermal plasma according to the present invention, the plasma energy that is required to vary depending on the types of metals is regulated by the magnitude of power via voltage regulation. In the method of catalysts reduction using non-thermal plasma according to the present invention, said reduction method is conducted in conjunction with existing methods of gaseous hydrogen reduction by heating, electrochemical reduction methods, or methods of reduction by adding organic or inorganic reducing agents.
    Type: Application
    Filed: December 29, 2003
    Publication date: February 10, 2005
    Applicant: Korea Institute of Science and Technology
    Inventors: Hyung Song, Hwaung Lee, Jae-Wook Choi, Gi-Seok Yang, Seung-Soo Kim, Byung-Ki Na