Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8007141 | Diffraction optical element, lighting device, and projector | Hidefumi Sakata | 2011-08-30 |
| 7946708 | Display device that projects a virtual image display | Hidefumi Sakata, Susumu Aruga | 2011-05-24 |