Patents by Inventor Dong Sun Seo

Dong Sun Seo 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).

  • Method for coating porous catalyst support and device therefor
    Patent number: 11813599
    Abstract: A method for coating a monolithic porous catalyst support having a plurality of channels formed in a longitudinal direction with a catalyst slurry, and a device therefor are proposed. A pressure dispersion coating device for a porous catalyst support includes: a slurry quantitative input means; a container being variable in volume, having an open upper part thereof into which a slurry is input by the slurry quantitative input means, and having a bottom thereof movable; a container moving means fastened to one side of the container; a moving means fastened to a lower part of the container and having a shaft connected to the bottom of the container; an overflow outlet being formed on a side part of the container and provided with a valve; and a pressurizing means disposed on the open upper part of the container.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: November 14, 2023
    Assignee: HEESUNG CATALYSTS CORPORATION
    Inventors: Hyun-sik Han, Dong-Sun Seo, Myeong-cheol Seon, Seung-bok Yu
  • METHOD FOR COATING POROUS CATALYST SUPPORT AND DEVICE THEREFOR
    Publication number: 20210339237
    Abstract: A method for coating a monolithic porous catalyst support having a plurality of channels formed in a longitudinal direction with a catalyst slurry, and a device therefor are proposed. A pressure dispersion coating device for a porous catalyst support includes: a slurry quantitative input means; a container being variable in volume, having an open upper part thereof into which a slurry is input by the slurry quantitative input means, and having a bottom thereof movable; a container moving means fastened to one side of the container; a moving means fastened to a lower part of the container and having a shaft connected to the bottom of the container; an overflow outlet being formed on a side part of the container and provided with a valve; and a pressurizing means disposed on the open upper part of the container.
    Type: Application
    Filed: October 4, 2019
    Publication date: November 4, 2021
    Inventors: Hyun-sik Han, Dong-Sun Seo, Myeong-cheol Seon, Seung-bok Yu
  • APPARATUS AND METHOD FOR STABILIZING A LIGHT
    Publication number: 20180138653
    Abstract: An apparatus and a method for stabilizing output of a light source are disclosed. The stabilization device located outside of a light source comprises a stabilization element, and a stabilization controller configured to control a light output from the light source so that a part of the light output and other part of the light cross propagate in the stabilization element.
    Type: Application
    Filed: February 13, 2017
    Publication date: May 17, 2018
    Inventors: Dong Sun Seo, Yong Yuk Won
  • Apparatus and method for stabilizing a light
    Patent number: 9972965
    Abstract: An apparatus and a method for stabilizing output of a light source are disclosed. The stabilization device located outside of a light source comprises a stabilization element, and a stabilization controller configured to control a light output from the light source so that a part of the light output and other part of the light cross propagate in the stabilization element.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: May 15, 2018
    Assignee: Myongji University Industry and Academia Cooperation Foundation
    Inventors: Dong Sun Seo, Yong Yuk Won