Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9039192 | Projection display device comprising a light source | Takayuki Okada | 2015-05-26 |
| 8701240 | Lens cleaning mechanism, projection lens, and projection type display device | Takayuki Okada | 2014-04-22 |