Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6693393 | Ballast for a discharge lamp | Hirofumi Konishi, Toshiaki Nakamura, Takashi Kambara, Miki Kotani | 2004-02-17 |
| 6680899 | Optical information medium | Tsuyoshi Komaki, Hideki Hirata, Naoki Hayashida | 2004-01-20 |