Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12152514 | Variable valve actuation device for engine | Tengfei Ji, Hongqiang Yu, Wei Shi, Jian SONG | 2024-11-26 |
| 9621492 | System and method for providing information interactively by instant messaging application | Euivin PARK, Heechan Yang, Hyuk JUNG | 2017-04-11 |