Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10302197 | Graphite cast iron nitrided piston ring | Wan Tzu Chien, Wei Wu, Chia-Chun Li | 2019-05-28 |
| 6326728 | Type of light | Lu Cheng | 2001-12-04 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10302197 | Graphite cast iron nitrided piston ring | Wan Tzu Chien, Wei Wu, Chia-Chun Li | 2019-05-28 |
| 6326728 | Type of light | Lu Cheng | 2001-12-04 |