Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6715966 | Rotary cutting tool having corrugated cutting edge portion whose pitch and/or depth are/is increased with increase in diameter of body of the cutting tool | Kiyoshi Tsuzuki, Satoru Kamata | 2004-04-06 |
| 6164877 | Formed rotary cutting tool having varying diameter and constant clearance angle, and method of forming groove by using the same | Satoru Kamata | 2000-12-26 |