Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6287029 | Multi-layer ink ribbon and manufacture thereof | Masakazu Takahashi, Yoshiro Kitamura | 2001-09-11 |
| 5688154 | Liquid ink composition for impact printer and ink ribbon using the same | Masayuki Imanishi, Shota Yamada | 1997-11-18 |
| 5017228 | Liquid ink for selective printing | — | 1991-05-21 |