Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5090849 | Rotary cutting tool | Tatsuo Arai, Takayoshi Saito, Hidehisa Shiratori, Ryoei Hasegawa, Kazuo Iizuka | 1992-02-25 |
| 5004378 | Clamped cutting tool | Tatsuo Arai | 1991-04-02 |