Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11207913 | Erasing member and erasing tool using the same | Satoru Banzai, Toshimi Kamitani, Yosuke Setagawa, Tooru Nakajima | 2021-12-28 |
| 9636940 | Writing instrument | Toshimi Kamitani, Satoru Banzai, Yoshiharu Namiki, Yosuke Setagawa, Tooru Nakajima +1 more | 2017-05-02 |