| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 3 | |
| #2 | EAPO (Eurasian Patent Organization) | 2 | |
| #3 | WIPO (World Intellectual Property Organization) | 2 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | Georgia | 1 | |
| #6 | Hong Kong | 1 | |
| #7 | Philippines | 1 | |
| #8 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Shafts | |
| #2 | Foundations and excavations |
| # | Name | Total Patents |
|---|---|---|
| #1 | Seo Dong-Hyun | 11 |
| #2 | Seo Min-Kyu | 6 |
| #3 | Dong-Hyun Seo | 1 |
| #4 | Min-Kyu Seo | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO2017090975A1 | Tunnel construction method using pre-support and post-support and apparatus suitable for same |