Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5340929 | Trisazo dye and dye composition containing the same | Takashi Ono, Tatsuya Yagyu, Masaki Yonezawa | 1994-08-23 |
| 5336763 | Trisazo dye and dye composition containing the same | Takashi Ono, Tatsuya Yagyu, Masaki Yonezawa | 1994-08-09 |