Patents by Inventor Jae-Wook Choi

Jae-Wook Choi 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: 11583833
    Abstract: Disclosed herein are a calcium salts-supported metal catalyst, a method for preparing the same, and a method for the hydrodeoxygenation reaction of oxygenates using the same. The catalyst, in which a metal catalyst is supported on a carrier of a calcium salt, for example, calcium carbonate, has the effect of increasing the efficiency of hydrodeoxygenation reaction of oxygenates.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: February 21, 2023
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeong-Myeong Ha, Adid Adep Dwiatmoko, Jae Wook Choi, Dong Jin Suh, Jungho Jae, Young Hyun Yoon, Kwang Ho Kim
  • Publication number: 20220399192
    Abstract: A substrate processing device according to an embodiment of the present invention includes a disk part disposed in a chamber in which a heating means is provided, and a pocket part installed on one surface of the disk part and on which a substrate is seated. A heat hole through which heat generated by the heating means passes may be formed on an installation surface of the disk part on which the pocket part is installed, or a gear hole through which the heat of the heating means passes may be formed in a pocket gear facing the disk part.
    Type: Application
    Filed: November 22, 2019
    Publication date: December 15, 2022
    Inventors: Su Woong KIM, Dong Won SEO, Jae Wook CHOI, Sang Bo KIM, Sang Yoon MOON, Han Young KONG, Seung Dae CHOI, Baek Ju LEE, Jae Soon HWANG
  • Publication number: 20220379286
    Abstract: Disclosed are a method for producing lactic acid from wastes containing cellulose and/or hemicellulose and a catalyst for thermochemical conversion reaction of wastes containing cellulose and/or hemicellulose. The method includes a step of adding a metal catalyst to wastes containing cellulose and/or hemicellulose and performing thermochemical conversion reaction. The method provides an effect of producing lactic acid from discarded wastes, e.g., waste paper such as waste corrugated paperboards, waste paper boxes, waste newspapers, etc.
    Type: Application
    Filed: May 11, 2022
    Publication date: December 1, 2022
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Kwang Ho KIM, Chang Soo KIM, Jeong-Myeong HA, Jae Wook CHOI, Chunjae YOO
  • 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
  • Publication number: 20210162376
    Abstract: Disclosed herein are a calcium salts-supported metal catalyst, a method for preparing the same, and a method for the hydrodeoxygenation reaction of oxygenates using the same. The catalyst, in which a metal catalyst is supported on a carrier of a calcium salt, for example, calcium carbonate, has the effect of increasing the efficiency of hydrodeoxygenation reaction of oxygenates.
    Type: Application
    Filed: February 11, 2021
    Publication date: June 3, 2021
    Inventors: Jeong-Myeong HA, Adid Adep Dwiatmoko, Jae Wook CHOI, Dong Jin SUH, Jungho JAE, Young Hyun YOON, Kwang Ho KIM
  • Patent number: 10953387
    Abstract: Disclosed herein are a calcium salts-supported metal catalyst, a method for preparing the same, and a method for the hydrodeoxygenation reaction of oxygenates using the same. The catalyst, in which a metal catalyst is supported on a carrier of a calcium salt, for example, calcium carbonate, has the effect of increasing the efficiency of hydrodeoxygenation reaction of oxygenates.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: March 23, 2021
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeong-Myeong Ha, Adid Adep Dwiatmoko, Jae Wook Choi, Dong Jin Suh, Jungho Jae, Young Hyun Yoon, Kwang Ho Kim
  • 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
  • Publication number: 20190381484
    Abstract: Disclosed herein are a calcium salts-supported metal catalyst, a method for preparing the same, and a method for the hydrodeoxygenation reaction of oxygenates using the same. The catalyst, in which a metal catalyst is supported on a carrier of a calcium salt, for example, calcium carbonate, has the effect of increasing the efficiency of hydrodeoxygenation reaction of oxygenates.
    Type: Application
    Filed: March 5, 2019
    Publication date: December 19, 2019
    Inventors: Jeong-Myeong HA, Adid Adep Dwiatmoko, Jae Wook CHOI, Dong Jin SUH, Jungho JAE, Young Hyun YOON, Kwang Ho KIM
  • Patent number: 10487021
    Abstract: The present disclosure relates to catalysts supported on a modified-carrier for oxidative coupling reaction of methane and a method for oxidative coupling reaction of methane using the same. The catalysts in which sodium tungstate is supported on a delaminated zeolite carrier increase the methane conversion rate and the selectivity to C2+ hydrocarbon compounds and thereby improve the reactivity of the oxidative coupling reaction of methane.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: November 26, 2019
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sangseo Gu, Jeong-Myeong Ha, Jae Wook Choi, Dong Jin Suh, Young Hyun Yoon, Jungho Jae, Jung Kyu Choi
  • Publication number: 20190152876
    Abstract: The present disclosure relates to catalysts supported on a modified-carrier for oxidative coupling reaction of methane and a method for oxidative coupling reaction of methane using the same. The catalysts in which sodium tungstate is supported on a delaminated zeolite carrier increase the methane conversion rate and the selectivity to C2+ hydrocarbon compounds and thereby improve the reactivity of the oxidative coupling reaction of methane.
    Type: Application
    Filed: December 28, 2017
    Publication date: May 23, 2019
    Inventors: Sangseo GU, Jeong-Myeong HA, Jae Wook CHOI, Dong Jin SUH, Young Hyun YOON, Jungho JAE, Jung Kyu CHOI
  • Publication number: 20160115595
    Abstract: The present invention relates to a gas supply device and, more specifically, to a gas supply device which can improve the flow of process gas within a process chamber and can increase a degree of uniformity of a deposition layer. The gas supply device, according to the present invention, comprises: a lead having a gas pipe connected thereto; a first plate for discharging, to a process chamber, gas introduced into the lead; a second plate provided so as to disperse gas flowing towards the bottom by being arranged between the lead and the first plate; a plurality of discharge holes on the first plate; and a plurality of discharge holes formed on the second plate, wherein a discharge hole formed at a corner section of the second plate is arranged in a different state from that of a discharge hole of a corner section formed at the same position on the first plate.
    Type: Application
    Filed: May 8, 2014
    Publication date: April 28, 2016
    Inventors: Chul Joo HWANG, Ho Chul KANG, Seung Yong YANG, Myung Jin LEE, Yong Hyun LEE, Cheol Woo CHONG, Jae Wook CHOI
  • Patent number: 9199225
    Abstract: Disclosed is a method for preparing a metal fluoride catalyst as a dehydrofluorination catalyst having high activity under a mild condition using a trifluoroacetic acid solution with no use of HF gas having fluidity and corrosive property. Disclosed also is a dehydrofluorination method for preparing HFO-1225ye from HFP-236ea by using the catalyst with high efficiency.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: December 1, 2015
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hilman Hutama, Jeong-Myeong Ha, Chang Soo Kim, Hong Gon Kim, Jae Wook Choi, Dong Jin Suh, Hyun Joo Lee, Byoung Sung Ahn
  • 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: 9022714
    Abstract: A substrate processing system and substrate transferring method capable of transferring a substrate bi-directionally through the use of substrate transferring device provided between two rows of processing chambers arranged linearly, thereby improving the substrate-transferring efficiency, the substrate processing system includes a transfer chamber having at least one bi-directional substrate transferring device for bi-directionally transferring a substrate; and a plurality of processing chambers for applying a semiconductor-manufacturing process to the substrate, wherein the plurality of processing chambers are linearly arranged along two rows confronting each other, and the transfer chamber is interposed between the two rows of the processing chambers, wherein the bi-directional substrate transferring device have a moving unit inside the transfer chamber, and horizontally moved by a linear motor; and a bi-directional substrate transferring unit in the moving unit, the bi-directional substrate transferring u
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: May 5, 2015
    Assignee: Jusung Engineering Co., Ltd.
    Inventors: Kyoo Hwan Lee, Duck Won Moon, Jae Wook Choi
  • 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
  • Publication number: 20150080617
    Abstract: Disclosed is a method for preparing a metal fluoride catalyst as a dehydrofluorination catalyst having high activity under a mild condition using a trifluoroacetic acid solution with no use of HF gas having fluidity and corrosive property. Disclosed also is a dehydrofluorination method for preparing HFO-1225ye from HFP-236ea by using the catalyst with high efficiency.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 19, 2015
    Applicant: Korea Institute of Science and Technology
    Inventors: Hilman Hutama, Jeong-Myeong HA, Chang Soo KIM, Hong Gon KIM, Jae Wook CHOI, Dong Jin SUH, Hyun Joo LEE, Byoung Sung AHN
  • 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