Patents by Inventor Junghee Chang

Junghee Chang 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).

  • Patent number: 9718104
    Abstract: The present invention relates to a system for remediating highly contaminated fine soil using multiple micro hydrocyclones that includes: a mill adapted to mix contaminated soil with water and to individualize the soil; a screen adapted to separate the soil introduced from the mill into soil having given particle sizes; a separator adapted to finely separate the soil having particle sizes of less than a given value by particle size from the soil having the given particle sizes separated through the screen; a remediating unit adapted to wash the finely separated soil introduced from the separator by particle size by means of process water for washing; and a filtering unit adapted to separately discharge the soil washed and introduced through the remediating unit and the process water for washing contained in the soil.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: August 1, 2017
    Assignee: HYUNDAI ENGINEERING & CONSTRUCTION CO., LTD.
    Inventors: Jungyo Jung, Wan Hyup Kang, Heehun Chae, Junghee Chang
  • Patent number: 9487412
    Abstract: The present invention relates to a system and method for remediating contaminated soil through separation and process of highly contaminated coarse soil, the system including: a screen adapted to separate the contaminated soil introduced into soil having given particle sizes; multiple hydrocyclones adapted to re-separate the soil having particle sizes of more than the given values by particle size from the soil having the given particle sizes separated through the screen; a remediating unit adapted to wash the soil separated through the multiple hydrocyclones by particle size; and a filtering unit adapted to separate water from the soil washed through the remediating unit.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: November 8, 2016
    Assignee: HYUNDAI ENGINEERING & CONSTRUCTION CO., LTD.
    Inventors: Jungyo Jung, Wan Hyup Kang, Kangsuk Kim, Junghee Chang
  • Publication number: 20140345649
    Abstract: The present invention relates to a system for remediating highly contaminated fine soil using multiple micro hydrocyclones that includes: a mill adapted to mix contaminated soil with water and to individualize the soil; a screen adapted to separate the soil introduced from the mill into soil having given particle sizes; a separator adapted to finely separate the soil having particle sizes of less than a given value by particle size from the soil having the given particle sizes separated through the screen; a remediating unit adapted to wash the finely separated soil introduced from the separator by particle size by means of process water for washing; and a filtering unit adapted to separately discharge the soil washed and introduced through the remediating unit and the process water for washing contained in the soil.
    Type: Application
    Filed: March 28, 2012
    Publication date: November 27, 2014
    Applicant: HYUNDAI ENGINEERING & CONSTRUCTION CO., LTD.
    Inventors: Jungyo Jung, Wan Hyup Kang, Heehun Chae, Junghee Chang
  • Publication number: 20140321916
    Abstract: The present invention relates to a system and method for remediating contaminated soil through separation and process of highly contaminated coarse soil, the system including: a screen adapted to separate the contaminated soil introduced into soil having given particle sizes; multiple hydrocyclones adapted to re-separate the soil having particle sizes of more than the given values by particle size from the soil having the given particle sizes separated through the screen; a remediating unit adapted to wash the soil separated through the multiple hydrocyclones by particle size; and a filtering unit adapted to separate water from the soil washed through the remediating unit.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 30, 2014
    Applicant: HYUNDAI ENGINEERING & CONSTRUCTION CO., LTD.
    Inventors: Jungyo Jung, Wan Hyup Kang, Kangsuk Kim, Junghee Chang