Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9507072 | Light guide, manufacturing method of light guide, optical shutter, and planar light-source device | Tomonari Yoshimura, Kenji Yagi | 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, Yoshiya Kurachi, Masatoshi Toda | 2015-08-04 |