Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5171109 | Cutting tool | Tatsuo Arai | 1992-12-15 |
| 5160228 | Cutting tool with clamped-on inserts | Tatsuo Arai, Masaaki Nakayama | 1992-11-03 |
| 5102269 | Insert cutter | Tatsuo Arai, Hiroaki Hayashizaki, Toru Narita | 1992-04-07 |
| 5090849 | Rotary cutting tool | Tatsuo Arai, Katsumi Haga, Hidehisa Shiratori, Ryoei Hasegawa, Kazuo Iizuka | 1992-02-25 |
| 5000625 | Inserted cutting tool | Tatsuo Arai | 1991-03-19 |
| 4966500 | Face milling cutter with cutter inserts | Osamu Tsujimura, Tatsuo Arai | 1990-10-30 |
| 4964762 | Combination of cutter and fastener unit therefor | Tatsuo Arai | 1990-10-23 |
| 4954021 | Inserted rotary cutter | Osamu Tsujimura, Tatsuo Arai | 1990-09-04 |
| 4930945 | Insert rotary cutter | Tatsuo Arai, Osamu Tsujimura, Hiroaki Hayashizaki | 1990-06-05 |
| 4844669 | Insert boring tool and cutting insert therefor | Osamu Tsujimura, Tatsuo Arai | 1989-07-04 |
| 4808045 | End mill with throw-away tip | Osamu Tsujimura, Tatsuo Arai, Yasuzo Funaki | 1989-02-28 |
| 4693641 | End mill with throw-away tip | Osamu Tsujimura, Tatsuo Arai | 1987-09-15 |