Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5352051 | Writing instrument | Takashi Tamura, Masamitsu Nagahama, Yoshihiro Wada, Masayuki Kawasaki, Kazuo Sakai +1 more | 1994-10-04 |
| 5217313 | Writing instrument | Takashi Tamura, Masamitsu Nagahama, Yoshihiro Wada, Masayuki Kawasaki, Kazuo Sakai +1 more | 1993-06-08 |