Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4626304 | Method of making a light-polarizing plate | Takuzo Okumura, Hitoshi Kikui | 1986-12-02 |
| 4564545 | Light-polarizing plate having excellent durability and production of the same | Takuzo Okumura, Hitoshi Kikui | 1986-01-14 |