Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5281709 | Production of an azine dye having excellent heat- and light-resistance | Sadahiko Matsubara | 1994-01-25 |
| 5034058 | Aqueous ink composition | Takashi Ono, Tatsuya Yagyu | 1991-07-23 |
| 4666519 | Aqueous ink composition | Takashi Ono, Tatsuya Yagyu | 1987-05-19 |
| 4649174 | Coloring composition | Takashi Ono | 1987-03-10 |