Issued Patents All Time
Showing 76–87 of 87 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 6335216 | Method for fabricating a semiconductor optical device having a ridge stripe | Keiichi Yabusaki, Naoki Tsukiji | 2002-01-01 |
| 6115116 | Waveguide-type variable-sensitivity semiconductor photodetector | Noriyuki Yokouchi, Takeharu Yamaguchi, Kazuaki Nishikata | 2000-09-05 |
| 6060018 | Cold tool steel featuring high size stability, wear-resistance and machinability | Yuji Machida, Keiichi Hayashida, Masaaki Otakane | 2000-05-09 |
| 6049770 | Video and voice signal processing apparatus and sound signal processing apparatus | Akira Iketani, Chiyoko Matsumi, Tatsuro Juri | 2000-04-11 |
| 5982982 | Video signal processing apparatus | Tadashi Ono, Hiroyuki Uenaka, Akira Iketani, Masaaki Kobayashi, Souichirou Fujioka +1 more | 1999-11-09 |
| 5973339 | Semiconductor photodetector having an optical attenuator | Noriyuki Yokouchi, Takeharu Yamaguchi | 1999-10-26 |
| 5575662 | Methods for connecting flexible circuit substrates to contact objects and structures thereof | Yasuhiko Yamamoto, Isao Ohki, Hideo Yamashita, Kazuo Ouchi, Masayuki Kaneto | 1996-11-19 |