Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |