Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5472538 | Process for producing phase retarder film | Keiichi Minakuchi, Hideki Shimomura | 1995-12-05 |
| 5285303 | Phase retarder and process for producing the same | Toyokazu Okada, Koji Higashi, Akiko Shimizu | 1994-02-08 |
| 5244713 | Optical film | Kimishige Nakamura, Toyokazu Okada | 1993-09-14 |
| 5061042 | Phase retarder and liquid crystal display using the same | Kimishige Nakamura, Shuji Kitamura, Toyokazu Okada, Hitoshi Kikui, Koji Higashi +1 more | 1991-10-29 |
| 4767303 | Extruding apparatus for extruding synthetic resin | Minoru Takahashi | 1988-08-30 |
| 4522955 | Highly foamed polypropylene product and an extrusion process for forming the product | Nobuo Fukushima, Yoshihiko Kitagawa, Takuzo Okumura | 1985-06-11 |