Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6277966 | Azo-compounds and dye polarizing films containing them | Yutaka Kayane, Narutoshi Hayashi | 2001-08-21 |
| 4519947 | Process for producing anthraquinone compounds | Makoto Hattori, Toshihiko Morimitsu, Akira Takeshita | 1985-05-28 |
| 4510087 | Process for producing 1,4-diaminoanthraquinone-2-sulfonic acid | Makoto Hattori, Akira Takeshita | 1985-04-09 |