Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7331291 | Self-supporting air tube for blasting | — | 2008-02-19 |
| 7252159 | Underwater rock boring apparatus having differential global positioning system receiver and boring method thereof | In Suk Baek, Jong Seol Kim | 2007-08-07 |
| 7032978 | Crushing method using large boreholes in underwater rock | In Suk Baek, Jong Seol Kim | 2006-04-25 |
| 6631684 | Rock blasting method using air bladders embedded in loading layers | — | 2003-10-14 |
| 6454359 | Method for blasting tunnels using an air bladder | — | 2002-09-24 |
| 6330860 | Method of blasting using air tubes charged in a blasthole | — | 2001-12-18 |