Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7465084 | Light guiding plate and backlight apparatus | Yoshinari Kawashima, Youhei Yamazaki, Shiro Sugawara, Nobuaki Kuribara, Akira Koshimura | 2008-12-16 |
| 6721097 | Optical element, its manufacturing method and optical element manufacturing metal die | Yoshinari Kawashima, Akira Koshimura | 2004-04-13 |
| 6552863 | Optical element, its manufacturing method and optical element manufacture metal die | Yoshinari Kawashima, Akira Koshimura | 2003-04-22 |
| 5812407 | Apparatus for correcting and holding front surface of sheet | Shuzo Sato, Hiizu Otorii | 1998-09-22 |
| 5331383 | Conductive roller transfer device with improved transfer efficiency and pollution control | Hiroshi Nou, Masahiro Wanou, Masashi Ogasawara, Masae Ikeda, Shino Sakai +2 more | 1994-07-19 |