Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8364045 | Wavelength control method and optical transmission device | Tomohisa Ishikawa | 2013-01-29 |
| 7769304 | Signal light processing apparatus | Hisaya Sakamoto, Toru Yamazaki, Yoshito Anazawa | 2010-08-03 |
| 5732096 | Control circuit for supplying a driving current to a laser diode | Kazuhiro Suzuki, Yuji Miyaki, Akihiko Yasuda, Yoshinori Ohkuma | 1998-03-24 |
| 5625181 | Light-receipt system with current bias circuit and pre-amplifier for use in optical digital communication | Akihiko Yasuda, Setsuo Misaizu, Hisaya Sakamoto, Yuji Miyaki, Norio Nagase | 1997-04-29 |