Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5331446 | Liquid crystal optical element and a laser projection apparatus using polymer dispersed liquid crystal | Hiroshi Kumai, Takehiko Nishiyama, Satoshi Niiyama, Tsuneo Wakabayashi | 1994-07-19 |
| 5283675 | Liquid crystal display element with electrode having concave-convex surface at liquid crystal side | Yoshiharu Ooi, Satoshi Niiyama, Tsuneo Wakabayashi | 1994-02-01 |