Issued Patents 2003
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6643308 | Semiconductor laser device and method for suppressing injection current | Naoki Tsukiji | 2003-11-04 |
| 6614822 | Semiconductor laser devices, and semiconductor laser modules and optical communication systems using the same | Naoki Tsukiji, Takeshi Aikiyo, Satoshi Koyanagi | 2003-09-02 |
| 6614823 | Semiconductor laser device having a diffraction grating on a light reflection side | Masaki Funabashi, Naoki Tsukiji | 2003-09-02 |
| 6603785 | Semiconductor laser device | Naoki Tsukiji | 2003-08-05 |
| 6567447 | Semiconductor laser device and semiconductor laser module using the same | Naoki Tsukiji, Akira Iketani, Naoki Kimura, Jun Niekawa, Toshio Kimura +1 more | 2003-05-20 |
| 6507819 | Sound signal processor for extracting sound signals from a composite digital sound signal | Akira Iketani, Chiyoko Matsumi, Tatsuro Juri | 2003-01-14 |