Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859039 | Light-polarizing film | Takuzo Okumura, Hitoshi Kikui | 1989-08-22 |
| 4802745 | Light-polarizing films | Koji Higashi, Satoshi Taguchi | 1989-02-07 |
| 4803014 | Light-polarizing film | Takuzo Okumura, Hitoshi Kikui | 1989-02-07 |