Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8053101 | Lithium ion rechargeable battery | Seok-Gyun Chang, Jung-Seog Kim, Yong Tae Kim, Sang Bong Nam | 2011-11-08 |
| 8039134 | Can type secondary battery and method of manufacturing circuit board for the secondary battery | Yook-young Kim, Young-boo Cho, Jong Ku Kim | 2011-10-18 |
| 7879484 | Cylindrical lithium ion secondary battery | Seok-Gyun Chang, Soon Ki Woo, Youn-Han Chang | 2011-02-01 |
| 7879498 | Center pin and lithium ion secondary battery using the same | Seok-Gyun Chang | 2011-02-01 |