Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5310509 | Dye-containing light-polarizing film | Toyokazu Okada, Koji Higashi, Shinjiro Kawasaki | 1994-05-10 |
| 4734489 | Trisazo compounds useful in producing water-resistant ink compositions | Shinjiro Kawasaki, Hideo Kitagawa, Hideo Kawashita, Minoru Akagi | 1988-03-29 |
| 4592756 | Dye solution composition | Sinjiro Kawasaki, Hideo Kitagawa | 1986-06-03 |