Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12157082 | Removable filter system | — | 2024-12-03 |
| 11879637 | Gas mixing apparatus for boiler | — | 2024-01-23 |
| 11629882 | Heat exchanger | Sung Hwan Choi | 2023-04-18 |
| 10521690 | Pictogram recognition apparatus, pictogram recognition system, and pictogram recognition method | Hangjip Choi, Seung-Gyun Kim, Jae Wan Park | 2019-12-31 |
| 8899261 | Trap apparatus for condensate water and drain apparatus for condensate water installed on the same | Dong-Ho Lee | 2014-12-02 |
| 6415744 | Combustion boiler | — | 2002-07-09 |