Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11993097 | Mechanical pencil | Yusuke SANADA, Nobukazu Seri, Takumi Kajiwara, Tomoharu Oonishi | 2024-05-28 |
| 10500891 | Mechanical pencil | Takumi Kajiwara, Nobukazu Seri, Atushi Ishikawa | 2019-12-10 |