Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7722983 | Lithium ion secondary battery | Yongtae Kim, Seok-Gyun Chang, YooEup Hyung, Kyonghwan Song, Sangbong Nam | 2010-05-25 |
| 7709141 | Lithium ion secondary battery | Yongtae Kim, Seok-Gyun Chang, YooEup Hyung, Kyonghwan Song, Sangbong Nam | 2010-05-04 |
| 7470486 | Lithium secondary battery | Jaesung Lee, Seok-Gyun Chang, Jeunghun Park, YooEup Hyung | 2008-12-30 |