Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6825616 | Discharge bulb with shroud glass having metal oxide in specific range | Yukihiro Kobayakawa | 2004-11-30 |
| 6750612 | Mercury-free arc tube for discharge lamp unit | Michio Takagaki, Shinichi Irisawa, Takeshi Fukuyo | 2004-06-15 |
| 6710521 | Discharge bulb with infrared transmitting film | Toshiaki Tsuda | 2004-03-23 |