Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9944855 | Soil stabilization and improvement method using biopolymer | Il Han Chang | 2018-04-17 |
| 9140122 | Excavation system using a water jet, and excavation method using the same | Tae-Min Oh | 2015-09-22 |