Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6479312 | Gallium phosphide luminescent device | Masato Yamada, Kousei Yumoto, Makoto Kawasaki, Ken Aihara | 2002-11-12 |
| 6433365 | Epitaxial wafer and light emitting diode | Toru Takahashi | 2002-08-13 |