Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11439987 | Multi-region TWC for treatment of exhaust gas from gasoline engine | Hongyu Ji, Xiang ZHENG | 2022-09-13 |
| 11364485 | Multi-region catalysts for CNG engine exhaust gas treatments with improved ammonia leakage control | Jingwen Wang, Xiang ZHENG | 2022-06-21 |