Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840640 | Polarizing film: polymer film base containing substituted anthraquinone dichroic dye | Konoe Miura, Seigo Okumura, Hidetoshi Urashima | 1989-06-20 |
| 4841057 | Cyclic imido anthraquinone compounds | Konoe Miura, Seigo Okumura, Shinji Kubo | 1989-06-20 |