Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10830118 | After treatment system and after treatment method for lean-burn engine | Changho Jung, Chang Hwan Kim, Seung Jae Yi | 2020-11-10 |
| 10808588 | After treatment system and after treatment method for lean-burn engine | Changho Jung, Chang Hwan Kim, Dohyung Kim | 2020-10-20 |
| 10697340 | After treatment system and after treatment method for lean-burn engine | Chang Hwan Kim, Changho Jung, Chulho Yu | 2020-06-30 |