Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8531766 | Polarization-separation device, optical scanning apparatus, and image forming apparatus | Toshiaki Tokita, Nobuaki Kubo | 2013-09-10 |
| 8368736 | Optical scanning device and image forming apparatus | Toshiaki Tokita, Nobuaki Kubo | 2013-02-05 |
| 8045248 | Optical scanning device and image forming apparatus | Naoto Watanabe, Yoshinori Hayashi | 2011-10-25 |
| 7688491 | Diffractive-optical element, scanning optical system, optical scanner, and image forming apparatus | Yoshinori Hayashi, Kohji Sakai | 2010-03-30 |
| 7663657 | Optical scanning device and image forming apparatus | Daisuke Ichii, Yoshinori Hayashi, Takeshi Ueda, Kohji Sakai | 2010-02-16 |