Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6844760 | LED drive circuit | Masashi Nogawa | 2005-01-18 |
| 5914484 | Circuit for adjusting luminous energy of light-emitting element and optical device using same | Hideki Tawarayama | 1999-06-22 |