Issued Patents 2004
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829271 | Light-emitting semiconductor device producing red wavelength optical radiation | Takashi Takahashi, Naoto Jikutani | 2004-12-07 |
| 6815731 | Light emitting semiconductor device with GaInNAs active layers and GaAs spacer layers | — | 2004-11-09 |
| 6803604 | Semiconductor optical modulator, an optical amplifier and an integrated semiconductor light-emitting device | Takashi Takahashi | 2004-10-12 |
| 6765232 | Semiconductor light-emitting device, surface-emission laser diode, and production apparatus thereof, production method, optical module and optical telecommunication system | Takashi Takahashi, Morimasa Kaminishi, Akihiro Itoh, Naoto Jikutani | 2004-07-20 |
| 6697404 | Laser diode operable in 1.3&mgr;m or 1.5&mgr;m wavelength band with improved efficiency | — | 2004-02-24 |
| 6674785 | Vertical-cavity, surface-emission type laser diode and fabrication process thereof | Takashi Takahashi, Naoto Jikutani, Morimasa Kaminishi, Akihiro Itoh | 2004-01-06 |