Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11158388 | Semiconductor memory device | Takeshi Hioka, Koji Kato, Yuki Shimizu, Hiroshi Maejima | 2021-10-26 |
| 11133066 | Semiconductor memory device | Yuki Shimizu, Yoshihiko Kamata, Hideyuki Kataoka, Koji Kato, Takumi Fujimoto +2 more | 2021-09-28 |
| 10892020 | Semiconductor memory device | Takeshi Hioka, Koji Kato, Yuki Shimizu, Hiroshi Maejima | 2021-01-12 |