Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10006186 | Earth anchor and construction method therefor | — | 2018-06-26 |
| 9612116 | Gyroscope with encased annular rotary core | — | 2017-04-04 |
| 9249546 | Floor slab structure for bridge | — | 2016-02-02 |
| 8910336 | Upper structure for bridge | — | 2014-12-16 |
| 8689383 | Upper structure for bridge | — | 2014-04-08 |
| 7827642 | Hollow prestressed concrete (HPC) girder and spliced hollow prestressed concrete girder (s-HPC) bridge construction method | — | 2010-11-09 |
| 7144200 | Innovative prestressed scaffolding system | — | 2006-12-05 |
| 7047704 | Method for designing and fabricating multi-step tension prestressed girder | — | 2006-05-23 |
| 6751821 | Prestressed concrete girder of adjustable load bearing capacity for bridge and adjustment method for load bearing capacity of bridge | — | 2004-06-22 |
| 5226707 | Foodstuff container receiving apparatus | Mong S. Kang | 1993-07-13 |
| 4710058 | Concrete lining machine | — | 1987-12-01 |