Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5331446 | Liquid crystal optical element and a laser projection apparatus using polymer dispersed liquid crystal | Yoshinori Hirai, Hiroshi Kumai, Satoshi Niiyama, Tsuneo Wakabayashi | 1994-07-19 |