Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1058322 | Grass cutting blade | — | 2025-01-21 |
| 8984728 | Drawing device | Lien-Chin Chen, Ching-Fang Chen | 2015-03-24 |
| 8490518 | Oil filter replacement device | Lien-Chin Chen, Ching-Fang Chen | 2013-07-23 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1058322 | Grass cutting blade | — | 2025-01-21 |
| 8984728 | Drawing device | Lien-Chin Chen, Ching-Fang Chen | 2015-03-24 |
| 8490518 | Oil filter replacement device | Lien-Chin Chen, Ching-Fang Chen | 2013-07-23 |