Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5408388 | Planar illuminating device | Yoji Oki, Nobuo Matsui, Yoshinori Go | 1995-04-18 |
| 4865425 | Power source device for driving liquid crystal | Youji Oki, Katsunori Kawano | 1989-09-12 |
| 4770499 | Illuminated liquid crystal display apparatus with bent, indicia-bearing light guide | Youji Oki, Katsunori Kawano | 1988-09-13 |