Issued Patents 2016
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9421983 | Active pressurization system making use of platform track area upper slab of underground train station | Ho Seok Lee | 2016-08-23 |
| 9382796 | Cartridge for tunnel blasting | — | 2016-07-05 |
| 9291054 | Tunnel excavation device | — | 2016-03-22 |
| 9291055 | Structure for reducing tunnel micro pressure wave including air pipe | — | 2016-03-22 |
| 9238286 | Method of controlling laser beam preheating temperature of surface of workpiece | Choon-Man Lee | 2016-01-19 |