Patents by Inventor Han-guen AHN

Han-guen AHN 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).

  • Highly efficient COabsorbent composition and method for preparing the same
    Patent number: 11666853
    Abstract: Disclosed are a carbon dioxide absorbent composition in which an N-alkylaminoalkanol; a polyhydroxyamine-based compound; and ethylenediamine and/or diethylenetriamine are mixed, a method for preparing the same, and a method and an apparatus for carbon dioxide absorption/separation using the same. Since the carbon dioxide absorbent according to the present disclosure has superior carbon dioxide absorption capacity and remarkably lower absorbent recycling temperature as compared to the existing absorbents such as monoethanolamine, etc., total energy consumption in the capturing process can be reduced greatly. In addition, since carbon dioxide is recovered at low recycling temperature, contamination by water or absorbent vapor may be prevented.
    Type: Grant
    Filed: February 15, 2021
    Date of Patent: June 6, 2023
    Assignees: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, KOREA LAND & HOUSING CORPORATION
    Inventors: In Wook Nah, Jae Ik Kim, Soon Jong Kwak, In Hwan Oh, Daeseung Kyung, Youngjong Sim, Yeongmin Kim, Han-Guen Ahn, Sang-Ick Choi
  • HIGHLY EFFICIENT CO2 ABSORBENT COMPOSITION AND METHOD FOR PREPARING THE SAME
    Publication number: 20220233997
    Abstract: Disclosed are a carbon dioxide absorbent composition in which an N-alkylaminoalkanol; a polyhydroxyamine-based compound; and ethylenediamine and/or diethylenetriamine are mixed, a method for preparing the same, and a method and an apparatus for carbon dioxide absorption/separation using the same. Since the carbon dioxide absorbent according to the present disclosure has superior carbon dioxide absorption capacity and remarkably lower absorbent recycling temperature as compared to the existing absorbents such as monoethanolamine, etc., total energy consumption in the capturing process can be reduced greatly. In addition, since carbon dioxide is recovered at low recycling temperature, contamination by water or absorbent vapor may be prevented.
    Type: Application
    Filed: February 15, 2021
    Publication date: July 28, 2022
    Inventors: In Wook NAH, Jae Ik KIM, Soon Jong KWAK, In Hwan OH, Daeseung KYUNG, Youngjong SIM, Yeongmin KIM, Han-guen AHN, Sang-ick CHOI