Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11993097 | Mechanical pencil | Nobukazu Seri, Yuji Kawarazaki, Takumi Kajiwara, Tomoharu Oonishi | 2024-05-28 |
| 11993099 | Ballpoint pen | Hidenori KUDOU, Takeshi Fujii | 2024-05-28 |
| 11446953 | Pressurized-type writing implement | Nobukazu Seri | 2022-09-20 |