Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7531965 | Discharge centering lamp lighting device | Masashi Okamoto, Masaaki Uehara | 2009-05-12 |
| 7439691 | High pressure discharge lamp lighting device | Katsumi Sugaya, Tomoyoshi Arimoto | 2008-10-21 |
| 7239090 | Discharge lamp lighting apparatus | Masashi Okamoto, Takumi Hashimoto | 2007-07-03 |
| 6946807 | Lamp lighting apparatus for a discharge lamp | Masashi Okamoto, Takanori Samejima | 2005-09-20 |
| 6734643 | Light source device | Masashi Okamoto, Mineo Nakayama | 2004-05-11 |
| 6661184 | Light source device | Masashi Okamoto, Takashi Yamashita | 2003-12-09 |
| 6597118 | High-pressure mercury lamp luminescent device and means of ignition | Tomoyoshi Arimoto, Masashi Okamoto | 2003-07-22 |
| 6552502 | Light source device | Masashi Okamoto, Mineo Nakayama | 2003-04-22 |