Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6486603 | High-frequency excitation point light source lamp device | Yukiharu Tagawa, Hiroyuki Fujii | 2002-11-26 |
| 6465940 | Cermet and ceramic discharge lamp | Yukiharu Tagawa | 2002-10-15 |