Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11131534 | Connector for blast-triggering device | Ki-Chul Park, Se-Hun Kim, Kyu Jin Ha | 2021-09-28 |
| 11054235 | Trunkline delay detonator and blast-triggering device using same | Ki-Chul Park, Se-Hun Kim, In-ji Kim | 2021-07-06 |