Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8894210 | Optical element, light source device, and projection-type display device | — | 2014-11-25 |
| 8238219 | Optical information recording/reproducing device, optical unit, and optical information recording method | Ryuichi Katayama | 2012-08-07 |