Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10473000 | Multiple variable valve lift apparatus | Heechang Oh, Seung Kook Han, Ju Hun Lee, Wootae Kim | 2019-11-12 |
| 10458294 | Variable valve device for engine | Back Sik Kim, Seung Kook Han | 2019-10-29 |
| 10436080 | Multiple variable valve lift apparatus | Jin Wook Son, You Sang Son, Seung Kook Han, Back Sik Kim, Wootae Kim | 2019-10-08 |