Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6817802 | Writing instrument | Ichiro Nishitani, Akira Matsuda | 2004-11-16 |
| D472925 | Writing instrument | Ichiro Nishitani, Akira Matsuda | 2003-04-08 |
| D472926 | Writing instrument | Ichiro Nishitani, Akira Matsuda | 2003-04-08 |
| 6439793 | Stippling instrument | Ichiro Nishitani, Akira Matsuda, Munetoshi Koshihara | 2002-08-27 |