Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8164266 | High pressure discharge lamp lighting apparatus | Hiroyuki Ishii, Minoru Fukuda | 2012-04-24 |
| 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 |
| 7649319 | Ultra-high pressure mercury lamp | Keiichi Matsumoto, Shoichi Terada | 2010-01-19 |