Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8044334 | High-pressure discharge lamp light source device having a power supply device with a switching state for switching from a direct current drive in a standby state to an alternating current drive in an operating state and projector | Teppei Kagata, Tetsuji Hirao | 2011-10-25 |
| 7960923 | High pressure discharge lamp lighting apparatus | Tomoyoshi Arimoto, Takashi Yamashita, Tetsuji Hirao, Kentaro Fujita | 2011-06-14 |