Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12285810 | Drill for carbon-fiber composite material | Koichi Arai, Giichi Arai, Satoshi Teshima | 2025-04-29 |
| 11364555 | Drill | Koichi Arai, Giichi Arai, Satoshi Teshima | 2022-06-21 |
| 8579557 | Drill | Koichi Arai, Giichi Arai | 2013-11-12 |