The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2025
Filed:
May. 13, 2022
Korea University Research and Business Foundation, Seoul, KR;
Dl Construction Co., Incheon, KR;
Seoyoung Engineering Co., Ltd., Seongnam-si, KR;
Backyoung G&c Co., Ltd., Seoul, KR;
Jong-Sub Lee, Seoul, KR;
Jung-Doung Yu, Suwon-si, KR;
Seok-Gyu Jeong, Seoul, KR;
Dong-Soo Lee, Seoul, KR;
Korea University Research and Business Foundation, Seoul, KR;
DL CONSTRUCTION CO., Incheon, KR;
SEOYOUNG ENGINEERING CO., LTD., Seongnam-si, KR;
BACKYOUNG G&C CO., LTD., Seoul, KR;
Abstract
A device for evaluating integrity of an underground structure by using electromagnetic waves includes a plurality of main reinforcing bars arranged in a vertical direction in an underground structure, a plurality of measurement cables extending vertically to be adjacent to the main reinforcing bars, respectively, at least one impedance change unit which is provided on each of the measurement cables, is electrically connected to the measurement cable, and has a characteristic impedance different from a characteristic impedance of the measurement cable, and an electromagnetic wave measurement unit for detecting a change point of a characteristic impedance as a defect point of the underground structure by providing an electromagnetic wave by using, as a signal transmission line, one of the plurality of measurement cables and one of the plurality of main reinforcing bars, or one pair of measurement cables selected from the plurality of measurement cables.