Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8424325 | Air conditioner | In Ho Choi, Jong Chan Park, Han Lim Choi, Nam Sik Yim | 2013-04-23 |
| 8387404 | Air conditioner | In Ho Choi, Jong Chan Park, Han Lim Choi, Nam Sik Yim | 2013-03-05 |
| 8146707 | Air conditioner | In Ho Choi, Jong Chan Park, Han Lim Choi, Nam Sik Yim | 2012-04-03 |
| 7558457 | Combined illumination and ventilation duct | Keun Hyoung Choi, In Ho Choi, Ho Seon Choi | 2009-07-07 |