Patents by Inventor Jangguen LEE

Jangguen LEE 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).

  • Testing apparatus having vacuum chamber, capable of ground testing, and testing method using same
    Patent number: 11014694
    Abstract: Disclosed is a testing apparatus and a testing method using the same, the apparatus having soil in a vacuum chamber includes: a buffer chamber having an entrance/exit opening through which an object to be inspected is inserted, and a first door for opening and closing the entrance/exit opening; a testing chamber divided at one side of the buffer chamber so as to be separated therefrom, and having a connection passage communicating with the buffer chamber; a shutter unit for opening and closing the connection passage; a soil storage part disposed inside the testing chamber, and accommodating soil for testing the object to be inspected; and a vacuum generation means for suctioning air inside the buffer chamber and the testing chamber so as to create a vacuum state.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: May 25, 2021
    Assignee: KOREA INSTITUTE OF CIVIL ENGINEERING AND BUILDING TECHNOLOGY
    Inventors: Changbeck Cho, Hyusoung Shin, Yongho Yoo, Jangguen Lee, Hosang Ahn, Taeil Chung
  • TESTING APPARATUS HAVING VACUUM CHAMBER, CAPABLE OF GROUND TESTING, AND TESTING METHOD USING SAME
    Publication number: 20210122503
    Abstract: Disclosed is a testing apparatus and a testing method using the same, the apparatus having soil in a vacuum chamber includes: a buffer chamber having an entrance/exit opening through which an object to be inspected is inserted, and a first door for opening and closing the entrance/exit opening; a testing chamber divided at one side of the buffer chamber so as to be separated therefrom, and having a connection passage communicating with the buffer chamber; a shutter unit for opening and closing the connection passage; a soil storage part disposed inside the testing chamber, and accommodating soil for testing the object to be inspected; and a vacuum generation means for suctioning air inside the buffer chamber and the testing chamber so as to create a vacuum state.
    Type: Application
    Filed: July 17, 2018
    Publication date: April 29, 2021
    Applicant: KOREA INSTITUTE OF CIVIL ENGINEERING AND BUILDING TECHNOLOGY
    Inventors: Changbeck CHO, Hyusoung SHIN, Yongho YOO, Jangguen LEE, Hosang AHN, Taeil CHUNG