Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9726890 | Light beam expanding device, image display device, and optical device | Katsuyuki Akutsu, Teppei Imamura | 2017-08-08 |
| 9164221 | Light beam expanding device, image display device, and optical device | Katsuyuki Akutsu, Teppei Imamura | 2015-10-20 |
| 8876355 | Light guide, light source apparatus, and reading apparatus | Koya Nomoto, Kazuhito Kunishima | 2014-11-04 |
| 7465084 | Light guiding plate and backlight apparatus | Yoshinari Kawashima, Youhei Yamazaki, Nobuo Suematsu, Shiro Sugawara, Akira Koshimura | 2008-12-16 |