Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6713963 | Ultra-high pressure discharge lamp | — | 2004-03-30 |
| 6713972 | ULTRA-HIGH PRESSURE DISCHARGE LAMP LIGHTING METHOD, ULTRA-HIGH PRESSURE DISCHARGE LAMP TO WHICH THE METHOD IS APPLICABLE AND BALLAST FOR USE THEREIN, AND LIGHTING SYSTEM INCORPORATING THE LAMP AND THE BALLAST | Toshitaka Hujii, Hisao Hurukawa, Tomihiko Ikeda, Tetsuya Shirai | 2004-03-30 |