Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12326303 | Method for manufacturing counter flow total heat exchanger | Eun Sook Hong, Eun Jung Hong | 2025-06-10 |
| 7654430 | Coil nailing device for construction finishing materials | Bo-Seob Cho, Jae-Sung Kim, In-Sung Hwang, Myung-Kyun Kim, Sang-Chun Lee +1 more | 2010-02-02 |
| D549538 | Portable air nailer | Sang-Chun Lee, Jong-Yeol Han | 2007-08-28 |