Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12038594 | Light guide plate, lighting apparatus, and display apparatus | Yoji Oki, Takeshi Asakura, Atsushi Kurita | 2024-07-16 |
| 10036844 | Surface light source device and prism sheet | Yoji Oki | 2018-07-31 |
| 9366798 | Light guide plate with sharp-edged prisms and side-edge type surface-emission optical apparatus including the same | — | 2016-06-14 |