Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6836314 | Optical device and display apparatus having a plate-shaped light guide and an optical control surface thereon | Munekazu Date, Shiro Suyama, Kinya Kato | 2004-12-28 |
| 6819393 | Optical device and display apparatus using light diffraction and light guide | Munekazu Date, Shiro Suyama, Kinya Kato | 2004-11-16 |