Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8026880 | Optical element, and illuminating optical device, display device and electronic device using the same | Ken Sumiyoshi | 2011-09-27 |
| 7916241 | Method for manufacturing optical element | Ken Sumiyoshi | 2011-03-29 |