Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9507077 | Resin composition for light guide article-preform, light guide article-preform, laminated light guide article-preform, light guide article for surface light source device and surface light source device | Fumiko Onuma, Minoru Shimizu, Kenji Yagi, Tomoyoshi Yamashita, Youhei Sechi +1 more | 2016-11-29 |
| 9097831 | Surface light source device, light guide element used for surface light source device, and method for producing light guide element | Kenji Yagi, Minoru Shimizu, Yasuo Wakui, Masatoshi Toda | 2015-08-04 |