Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10844767 | Device and method for removing carbon from oxygen sensor | Yong-Jun Choi, Sung Moon Cho, Yun Sik Jang | 2020-11-24 |
| 10766475 | Device for preventing dilution of engine oil | Sung Moon Cho, Yong-Jun Choi, Yun Sik Jang | 2020-09-08 |