Patents by Inventor Do-Heui Kim

Do-Heui Kim 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).

  • SCR catalyst having excellent sulfur tolerance
    Patent number: 12582973
    Abstract: Provided is an SCR catalyst for removing nitrogen oxides (NOx) from exhaust gas, comprising: 0.01-70 wt % of zeolite having an average pore size of 5 ? or more; 25-90 wt % of titanium dioxide (TiO2); and 4-10 wt % of vanadium pentoxide (V2O5). The SCR catalyst according to the present invention exhibits denitrification performance in a low-temperature area that is superior to that of a conventional SCR catalyst, has improved tolerance for a sulfur compound, and also has an excellent regeneration rate.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: March 24, 2026
    Assignees: POSCO HOLDINGS INC, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Joon-Woo Kim, Dong-Jun Koh, Young-Chul Byun, Do-Heui Kim, Jong-Tae Lim, In-Hak Song, Hwang-Ho Lee, Se-Won Jeon
  • SCR CATALYST HAVING EXCELLENT SULFUR TOLERANCE
    Publication number: 20220226803
    Abstract: Provided is an SCR catalyst for removing nitrogen oxides (NOx) from exhaust gas, comprising: 0.01-70 wt % of zeolite having an average pore size of 5 ? or more; 25-90 wt % of titanium dioxide (TiO2); and 4-10 wt % of vanadium pentoxide (V2O5). The SCR catalyst according to the present invention exhibits denitrification performance in a low-temperature area that is superior to that of a conventional SCR catalyst, has improved tolerance for a sulfur compound, and also has an excellent regeneration rate.
    Type: Application
    Filed: September 28, 2020
    Publication date: July 21, 2022
    Inventors: Joon-Woo KIM, Dong-Jun KOH, Young-Chul BYUN, Do-Heui KIM, Jong-Tae LIM, In-Hak SONG, Hwang-Ho LEE, Se-Won JEON
  • Catalyst for automotive lean-burn engine and process for preparing the same
    Patent number: 6627167
    Abstract: The present invention relates to a catalyst for automotive lean-burn engine comprising platinum impregnated on a zeolite support and a process for preparing the same. In accordance with the invention, the catalyst comprising a platinum-impregnated zeolite support can be prepared by sublimation, where the zeolite support effectively eliminates hydrocarbons from automotive exhaust gases by adsorption, and platinum as an active component of the catalyst exerts its catalytic activity through the direct decomposition of nitrogen oxides contained in automotive exhaust gases. Furthermore, the catalyst of the invention provides a widened temperature window for maximum catalytic activity and improved catalytic activity, compared to those of the conventional catalysts.
    Type: Grant
    Filed: January 8, 2001
    Date of Patent: September 30, 2003
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Seong-Ihl Woo, Do-Kyoung Kim, Do-Heui Kim
  • Catalyst for automotive lean-burn engine and process for preparing the same
    Publication number: 20020055431
    Abstract: The present invention relates to a catalyst for automotive lean-burn engine comprising platinum impregnated on a zeolite support and a process for preparing the same. In accordance with the invention, the catalyst comprising a platinum-impregnated zeolite support can be prepared by sublimation, where the zeolite support effectively eliminates hydrocarbons from automotive exhaust gases by adsorption, and platinum as an active component of the catalyst exerts its catalytic activity through the direct decomposition of nitrogen oxides contained in automotive exhaust gases. Furthermore, the catalyst of the invention provides a widened temperature window for maximum catalytic activity and improved catalytic activity, compared to those of the conventional catalysts.
    Type: Application
    Filed: January 8, 2001
    Publication date: May 9, 2002
    Inventors: Seong-Ihl Woo, Do-Kyoung Kim, Do-Heui Kim