Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7864412 | Semiconductor optical amplifier device amplifying external light signal and driving apparatus therefor | Toshiyuki Okumura | 2011-01-04 |
| 7515624 | Semiconductor laser, semiconductor laser driver and method of driving semiconductor laser reducing feedback-induced noise by modulated optical output | Toshiyuki Okumura | 2009-04-07 |
| 7274010 | Semiconductor optical amplifier device amplifying an externally applied light signal, semiconductor optical amplification driving device and semiconductor light receiving apparatus | Toshiyuki Okumura | 2007-09-25 |
| 7199398 | Nitride semiconductor light emitting device having electrode electrically separated into at least two regions | Tomoki Ono, Shigetoshi Ito, Toshiyuki Okumura, Hirokazu Mouri, Toshiyuki Kawakami +2 more | 2007-04-03 |