



| Category | Name | Registration Number | Registration Date |
|---|---|---|---|
| Patent | Airtight device that can be used without interrupting the water supply when replacing the water line | 10-1959223 | 2019-03-12 |
| Patent | Replacement construction method of Valve replacement device using saddle valve | 10-1934717 | 2018-12-27 |
| Patent | solar panel mounting bracket | 30-0986322 | 2018-12-14 |
| Patent | ASEISMATIC REINFORCEMENT DEVICE FOR DIAGONAL CORNER OF UNDERGROUND STRUCTURE WITH BOX TYPE AND CONST | 10-1879191 | 2018-07-11 |
| Patent | Method for Safety Assessment Real-Time of Landing Pier-Type Wharf Structure ba |
10-1874378 | 2018-06-28 |
| Patent | Apparatus for Diagnosis Defect of Steel Structures and Weld | 10-184389 | 2018-03-26 |
| Patent | 2MHz Side Scan Sonar for Resolution Enhancement and Operation Method thereo | 10-1797442 | 2017-11-08 |
| Patent | Method for Correction Shaking Image of Side-Scan Sonar | 10-1740538 | 2017-05-22 |
| Patent | Box girder bridge construction and assembly using the same | 10-1740004 | 2017-05-19 |