Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9890748 | Method for calculating oxygen concentration in combustion chamber | Seungcheol Han | 2018-02-13 |
| 9874162 | System for controlling engine using variable valve lift and method thereof | Hyo Sang Cho | 2018-01-23 |