Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11143065 | Electro-mechanical variable valve mechanism, control unit for variable valve mechanism, electro-mechanical variable valve system and control method thereof | Myung-Sik Choi | 2021-10-12 |
| 11008905 | Variable valve apparatus | Myung-Sik Choi | 2021-05-18 |