Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6477191 | Semiconductor laser device, semiconductor laser module, rare-earth-element-doped optical fiber amplifier and fiber laser | Tsuyoshi Fujimoto, Yasuo Oeda | 2002-11-05 |
| 6338679 | Portable game machine | Hitoshi Nakai | 2002-01-15 |