Issued Patents 2011
Showing 1–3 of 3 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, Tetsu Okamoto | 2011-10-25 |
| 7960923 | High pressure discharge lamp lighting apparatus | Tomoyoshi Arimoto, Takashi Yamashita, Tetsu Okamoto, Kentaro Fujita | 2011-06-14 |
| 7944150 | Discharge lamp lighting apparatus and projector | — | 2011-05-17 |