Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10465448 | Drill bit insert and drill bit | Toshihiko Matsuo, Chihiro SAKURAZAWA | 2019-11-05 |
| 10399153 | Rotary cutting tool including polycrystalline diamond material | Toshihiko Matsuo, Chihiro SAKURAZAWA, Tadakazu Ohashi | 2019-09-03 |
| 10352104 | Drill bit button insert and drill bit | Toshihiko Matsuo, Chihiro SAKURAZAWA | 2019-07-16 |