Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5812264 | Method of measuring surface reflectance and a method of producing antireflective polarizing film | Hiroshi Ishida, Akio Ohsaki | 1998-09-22 |
| 5244713 | Optical film | Toyokazu Okada, Kazuaki Sakakura | 1993-09-14 |
| 5061042 | Phase retarder and liquid crystal display using the same | Shuji Kitamura, Toyokazu Okada, Kazuaki Sakakura, Hitoshi Kikui, Koji Higashi +1 more | 1991-10-29 |