Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11072008 | Wear-resistant tool | Hitoshi Sumiya, Takeshi Sato, Makoto Yukawa | 2021-07-27 |
| 11007558 | Diamond die | Makoto Yukawa, Takuya Kinoshita, Shigetoshi Sumimoto, Yutaka Kobayashi, Akihiko Ueda +3 more | 2021-05-18 |