Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6720740 | Discharge lamp ballast circuit having snubber circuit | — | 2004-04-13 |
| 6710545 | Discharge lamp apparatus having directly coupled lamp and electronic controller | Hironao Yamaguchi | 2004-03-23 |
| 6700328 | Discharge lamp driver circuit designed to minimize radiation or noise | — | 2004-03-02 |
| 6672747 | Vehicle headlamp having removable lighting control unit | Hiranao Yamaguchi | 2004-01-06 |