Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10702929 | Drilling machine and method of manufacturing drilled product | Hisayuki Hirai, Tsukasa Yokono, Shigeru Shibata | 2020-07-07 |
| 10265780 | Drilling machine and method of manufacturing drilled product | Tsukasa Yokono, Hisayuki Hirai, Shigeru Shibata | 2019-04-23 |
| 9623488 | Drill and method of manufacturing machined product | Yoshifumi Koike, Hideaki Kataoka | 2017-04-18 |
| 9370829 | Bit exchangeable drill | Takumi Tamura, Masahiro Yoshida, Yoshiharu Kaimori | 2016-06-21 |