Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10851593 | Drilling tool | Kazuyoshi Nakamura | 2020-12-01 |
| D832318 | Drill bit tip | Hiroshi Ota | 2018-10-30 |
| D828415 | Drill bit tip | Hiroshi Ota | 2018-09-11 |
| D828416 | Drill bit tip | Hiroshi Ota | 2018-09-11 |