Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5320678 | Process for producing 4,4'-diamino-1,1,'-dianthraquinonyl pigments | Toshiaki Kishimoto, Iwao Sakaguchi, Kunitoshi Takahashi, Yoshiaki Hayashi, Keisuke Ito | 1994-06-14 |