Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9475128 | Drill and method for forming hole | Koji Saito, Masaru Kato | 2016-10-25 |
| 6499920 | Tap | — | 2002-12-31 |
| 6386954 | Thread forming tap and threading method | Isao Yokoyama, Kazutoshi Sato | 2002-05-14 |
| 5797710 | Thread forming tap | Isao Yokoyama, Kazutoshi Sato | 1998-08-25 |