Patents by Inventor Joung Woo HAN

Joung Woo HAN 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).

  • Catalyst for hydrogenation of aromatic compound and preparation method therefor
    Patent number: 11925920
    Abstract: The present invention relates to a catalyst for hydrogenation of an aromatic compound, which is capable of greatly reducing the inactivation of a catalyst by using a support including a magnesium-based spinel structure, and a preparation method therefor.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: March 12, 2024
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Eung Gyu Kim, Won Yong Kim, Jeong Hwan Chun, Young Jin Cho, Joung Woo Han, Hyo Suk Kim, Wan Jae Myeong, Ki Taeg Jung
  • CATALYST FOR HYDROGENATION REACTION AND METHOD FOR PRODUCING SAME
    Publication number: 20220001360
    Abstract: The present invention can facilitate the reduction of nickel by using copper as an accelerator when a hydrogenation catalyst including nickel is produced by using a deposition-precipitation (DP) method. According to an embodiment of the present invention, provided is a catalyst for a hydrogenation reaction that includes 40-80 parts by weight of nickel as a catalyst active component, 0.01-5 parts by weight of copper as an accelerator, and 10-30 parts by weight of a silica support based on 100 parts by weight of the entire catalyst. Therefore, although a high content of nickel is supported, the catalyst has a small crystal size of an activated metal and a high degree of dispersion and provides excellent hydrogenation activity.
    Type: Application
    Filed: October 29, 2019
    Publication date: January 6, 2022
    Inventors: Bong Sik JEON, Yong Hee LEE, Woo Jin PARk, Eui Geun JUNG, Wan Jae MYEONG, Joung Woo HAN
  • CATALYST FOR HYDROGENATION OF AROMATIC COMPOUND AND PREPARATION METHOD THEREFOR
    Publication number: 20200316564
    Abstract: The present invention relates to a catalyst for hydrogenation of an aromatic compound, which is capable of greatly reducing the inactivation of a catalyst by using a support including a magnesium-based spinel structure, and a preparation method therefor.
    Type: Application
    Filed: October 16, 2018
    Publication date: October 8, 2020
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Eung Gyu KIM, Won Yong KIM, Jeong Hwan CHUN, Young Jin CHO, Joung Woo HAN, Hyo Suk KIM, Wan Jae MYEONG, Ki Taeg JUNG