Patents by Inventor Gyo-hyun Hwang

Gyo-hyun 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: 20210086168
    Abstract: A catalyst for an oxychlorination process of hydrocarbons, a preparation method thereof, and a method for preparing an oxychlorination compound of hydrocarbons using the same.
    Type: Application
    Filed: February 22, 2019
    Publication date: March 25, 2021
    Applicants: LG CHEM, LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Jungup BANG, Do Heui KIM, Gyo Hyun HWANG, Jongwook JUNG, Yongju BANG, Youngseok RYOU, Jeongeun KIM
  • Publication number: 20210053036
    Abstract: A catalyst for an oxychlorination process of hydrocarbons, a preparation method thereof, and a method for preparing an oxychlorination compound of hydrocarbons using the same.
    Type: Application
    Filed: February 22, 2019
    Publication date: February 25, 2021
    Applicants: LG CHEM, LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Jungup BANG, Do Heui KIM, Gyo Hyun HWANG, Jongwook JUNG, Yongju BANG, Youngseok RYOU, Jeongeun KIM
  • Publication number: 20210046458
    Abstract: A partial oxidation process of hydrocarbons is provided, including bringing an inlet gas into contact with a catalyst, the inlet gas including a hydrocarbon raw material gas and a hydrogen chloride gas, wherein the catalyst includes a catalyst material including palladium (Pd), which catalyst material is supported on a carrier including cerium oxide (CeO2) and an amount of catalyst material supported on the carrier is 2 wt % to 10 wt % based on a total weight of the catalyst.
    Type: Application
    Filed: March 13, 2019
    Publication date: February 18, 2021
    Applicants: LG CHEM, LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Jungup BANG, Do Heui KIM, Gyo Hyun HWANG, Jongwook JUNG, Yongju BANG, Youngseok RYOU, Jeongeun KIM
  • Patent number: 10868312
    Abstract: The present specification relates to a carrier-nanoparticle complex, a preparation method therefor, and a membrane electrode assembly including the same.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: December 15, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Jun Yeon Cho, Sang Hoon Kim, Gyo Hyun Hwang, Kwanghyun Kim, Ran Choi, Wonkyun Lee
  • Publication number: 20200385876
    Abstract: Provided are an anode for electrolysis, which includes a metal base, and a catalyst layer disposed on at least one surface of the metal base, wherein the catalyst layer includes a composite metal oxide of ruthenium, iridium, titanium, and platinum, and a metal in the composite metal oxide does not include palladium, wherein, when the catalyst layer is equally divided into a plurality of pixels, a standard deviation of iridium compositions of the plurality of equally divided pixels is 0.40 or less, and a method of preparing the same.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 10, 2020
    Inventors: Hun Min PARK, Jung Ho CHOI, In Sung HWANG, Kwang Hyun KIM, Jung Up BANG, Dong Chul LEE, Gyo Hyun HWANG
  • Publication number: 20200328430
    Abstract: A carrier-nanoparticle complex including a carbon carrier, a polymer layer provided on the surface of the carbon carrier and having an amine group and a hydrogen ion exchange group, and metal nanoparticles provided on the polymer layer, a catalyst including the same, an electrochemical battery or a fuel cell including the catalyst, and a method for preparing the same.
    Type: Application
    Filed: April 28, 2017
    Publication date: October 15, 2020
    Inventors: Jun Yeon CHO, Kwanghyun KIM, Gyo Hyun HWANG, Sang Hoon KIM, Ran CHOI, Wonkyun LEE
  • Patent number: 10770727
    Abstract: A positive electrode active material for a lithium-sulfur battery, and more particularly, to a positive electrode active material for a lithium-sulfur battery including metal sulfide nanoparticles and a preparation method thereof. The metal sulfide nanoparticles with large specific surface area applied to the positive electrode active material for the lithium-sulfur battery according to the present invention acts as a redox mediator during charging and discharging of the lithium-sulfur battery, thereby reducing the shuttle response by not only inhibiting the formation itself of polysulfides with elution properties, but also, even if polysulfides are eluted, adsorbing them and thus preventing them from diffusing into the electrolyte solution, and thus the capacity and life characteristics of the lithium-sulfur battery can be improved.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: September 8, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Dongwook Lee, Jongwook Jung, Kwonnam Sohn, Doo Kyung Yang, Gyo Hyun Hwang
  • Publication number: 20200251747
    Abstract: A carrier-nanoparticle complex, a catalyst including the same, an electrochemical cell including the catalyst, and a method for preparing a carrier-nanoparticle complex.
    Type: Application
    Filed: September 19, 2018
    Publication date: August 6, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Wonkyun LEE, Sang Hoon KIM, Gyo Hyun HWANG, Jun Yeon CHO, Kwanghyun KIM, Ran CHOI
  • Patent number: 10693147
    Abstract: The present specification relates to a fuel cell and a method for manufacturing the same.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: June 23, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Jun Yeon Cho, Sang Hoon Kim, Gyo Hyun Hwang, Kwanghyun Kim
  • Patent number: 10675612
    Abstract: According to the present invention, a composite including amorphous iron molybdate islands, shows a smaller island size and a uniform distribution of islands compared with a conventional composite including crystalline islands, and thus has a higher specific surface area, thereby exhibiting excellent activity as a catalyst.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: June 9, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Cheolock Song, Gyo Hyun Hwang, Ara Cho, Jungup Bang
  • Publication number: 20200164352
    Abstract: A carrier-nanoparticle complex including: a carbon carrier; a polymer layer provided on a surface of the carbon carrier; and metal nanoparticles provided on the polymer layer, a catalyst including the same, an electrochemical cell or a fuel cell including the catalyst, and a method for preparing the same.
    Type: Application
    Filed: September 11, 2018
    Publication date: May 28, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Wonkyun LEE, Sang Hoon KIM, Gyo Hyun HWANG, Jun Yeon CHO, Kwanghyun KIM, Ran CHOI
  • Publication number: 20200161665
    Abstract: A method for preparing a support for an electrode catalyst including forming first and second polymer layers having charges different from each other on a surface of a carbon support and carbonizing the result, wherein the polymers included in the first and the second polymer layers are an aromatic compound including a heteroatom, and the first or the second polymer includes a pyridine group.
    Type: Application
    Filed: September 6, 2018
    Publication date: May 21, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Wonkyun LEE, Sang Hoon KIM, Gyo Hyun HWANG, Jun Yeon CHO, Kwanghyun KIM, Ran CHOI
  • Publication number: 20200144630
    Abstract: A method for preparing a catalyst for a fuel cell including performing a first supporting; separating particles unsupported in the first supporting; heat treating; and performing a second supporting, and a catalyst for a fuel cell prepared using the same.
    Type: Application
    Filed: September 6, 2018
    Publication date: May 7, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Wonkyun LEE, Sang Hoon KIM, Gyo Hyun HWANG, Jun Yeon CHO, Kwanghyun KIM, Ran CHOI
  • Publication number: 20200099040
    Abstract: A method for preparing a hollow structure, and more particularly, to a method for preparing a hollow structure having various stable structures by using polystyrene particles, into which a functional group is introduced, as a template for preparing the hollow structure.
    Type: Application
    Filed: August 28, 2018
    Publication date: March 26, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Jongwook JUNG, Se Ho PARK, Minchul JANG, Gyo Hyun HWANG, Eunkyung PARK, Changhun PARK
  • Patent number: 10543536
    Abstract: The present specification relates to a method for fabricating metal nanoparticles.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: January 28, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Kwanghyun Kim, Gyo Hyun Hwang, Sang Hoon Kim, Jun Yeon Cho
  • Patent number: 10541427
    Abstract: The present specification relates to a carrier-nanoparticle complex, a catalyst including the same, an electrochemical battery or a fuel cell including the catalyst, and a method for preparing the same.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: January 21, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Jun Yeon Cho, Kwanghyun Kim, Sang Hoon Kim, Ran Choi, Gyo Hyun Hwang, Wonkyun Lee
  • Patent number: 10537880
    Abstract: The present specification relates to a carrier-nanoparticle complex, a method for preparing the same, and a catalyst comprising the same.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: January 21, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Jun Yeon Cho, Sang Hoon Kim, Gyo Hyun Hwang, Kwanghyun Kim, Ran Choi
  • Patent number: 10518246
    Abstract: The present specification relates to a yolk-shell particle, a catalyst, and a method of manufacturing the same.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: December 31, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Jungup Bang, Jihyang Son, Gyo Hyun Hwang
  • Patent number: 10497940
    Abstract: The present specification relates to a carrier-nanoparticle complex and a preparation method thereof.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: December 3, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Sang Hoon Kim, Jun Yeon Cho, Kwanghyun Kim, Jungup Bang, Gyo Hyun Hwang, Ran Choi
  • Patent number: 10483553
    Abstract: The present application relates to a fuel cell and a method of manufacturing the same.
    Type: Grant
    Filed: November 27, 2014
    Date of Patent: November 19, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Kwanghyun Kim, Gyo Hyun Hwang, Sang Hoon Kim, Jun Yeon Cho