Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8471174 | Method for welding tip of electrode in spark plug | Seok Ki Song, Hyun-Joong Kim, Byung Heon Shin, Young Tae YOO | 2013-06-25 |
| 8217562 | Ignition plug | Nack Jun Kim, Jun Ho Bae, Seok Ki Song, Hyun-Joong Kim, Jong Hyun Im | 2012-07-10 |