Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5310509 | Dye-containing light-polarizing film | Koji Higashi, Shinjiro Kawasaki, Yutaka Nishii | 1994-05-10 |
| 5285303 | Phase retarder and process for producing the same | Kazuaki Sakakura, Koji Higashi, Akiko Shimizu | 1994-02-08 |