Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6331203 | Aqueous ink composition for ball-point pen | Akio Nakamura, Mikio Morishita | 2001-12-18 |
| 6275816 | Aqueous ink composition for ball-point pen | Akio Nakamura, Mikio Morishita | 2001-08-14 |