Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10159153 | Entry sheet for drilling | Takayuki Kamei, Yousuke Matsuyama | 2018-12-18 |
| 9986644 | Process for the production of entry sheet for drilling and entry sheet | Yousuke Matsuyama, Reiki Akita | 2018-05-29 |