Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5281709 | Production of an azine dye having excellent heat- and light-resistance | Kazutoshi Akiyama | 1994-01-25 |
| 4822424 | Hexakisazo dyes-containing aqueous compositions | Hisashi Senshu, Tamotsu Naito | 1989-04-18 |
| 4758659 | Hexakisazo dyes | Hisashi Senshu, Tamotsu Naito | 1988-07-19 |