Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5090849 | Rotary cutting tool | Tatsuo Arai, Katsumi Haga, Takayoshi Saito, Hidehisa Shiratori, Kazuo Iizuka | 1992-02-25 |
| 5026221 | Rotary cutting tool | Tatsuo Arai, Hidehisa Shiratori, Kazuo Iizuka | 1991-06-25 |
| 4679968 | Indexable cutter insert | Osamu Tsujimura, Masayuki Ohkawa | 1987-07-14 |