Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5310509 | Dye-containing light-polarizing film | Toyokazu Okada, Koji Higashi, Yutaka Nishii | 1994-05-10 |
| 4734489 | Trisazo compounds useful in producing water-resistant ink compositions | Hideo Kitagawa, Yutaka Nishii, Hideo Kawashita, Minoru Akagi | 1988-03-29 |