Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12119879 | Signal processing device | Ken Tanizawa | 2024-10-15 |
| 11894875 | Signal processing system | Ken Tanizawa | 2024-02-06 |
| 11863301 | Signal processing device | Ken Tanizawa | 2024-01-02 |
| 8773753 | Optical amplifier and optical amplifying apparatus | Tomoyuki Kato, Shigeki Watanabe | 2014-07-08 |
| 8565613 | Wavelength conversion apparatus, wavelength conversion method, and optical add/drop multiplexer using the same | — | 2013-10-22 |
| 8428470 | Waveform shaping apparatus, optical transmission system, and waveform shaping method | Shigeki Watanabe | 2013-04-23 |
| 8190032 | Optical signal processing apparatus | Shigeki Watanabe | 2012-05-29 |
| 7978319 | Optical switching method and optical switch | Ryou Okabe, Shigeki Watanabe | 2011-07-12 |
| 7953322 | Optical switch and optical switch control method | Ryou Okabe, Shigeki Watanabe | 2011-05-31 |
| 7877017 | Optical waveform measurement system and optical waveform measurement method | Shigeki Watanabe | 2011-01-25 |
| 7853145 | Optical switch and optical waveform monitoring apparatus | Shigeki Watanabe | 2010-12-14 |
| 7835643 | Optical waveform measuring apparatus and optical waveform measuring method | Shigeki Watanabe | 2010-11-16 |
| 7706649 | Optical processing device and optical processing method | Shigeki Watanabe | 2010-04-27 |
| 7643754 | Method of and apparatus for providing multi-wavelength light source | Shigeki Watanabe | 2010-01-05 |
| 7623792 | Clock extracting method and apparatus thereof | Shigeki Watanabe | 2009-11-24 |
| 7518711 | Optical waveform measurement apparatus and optical waveform measurement method | Shigeki Watanabe, Shunsuke Ono, Ryou Okabe | 2009-04-14 |
| 7433564 | Optical device for optical communication | Shigeki Watanabe | 2008-10-07 |
| 7397975 | Optical switch | Ryou Okabe, Shigeki Watanabe, Shunsuke Ono | 2008-07-08 |
| 7315557 | Multi-wavelength light source apparatus | Shigeki Watanabe, Yutaka Takita | 2008-01-01 |
| 7136596 | Optical pulse addition device | Shigeki Watanabe | 2006-11-14 |
| 7088491 | Pulse generating apparatus and method | Yutaka Takita, Shigeki Watanabe | 2006-08-08 |
| 7076174 | Method, device, and system for processing optical signal | Shigeki Watanabe | 2006-07-11 |
| 6963436 | Method and device for waveform shaping of signal light | Shigeki Watanabe | 2005-11-08 |
| 6751385 | Method and device for measuring the waveform of an optical signal | Shigeki Watanabe | 2004-06-15 |
| 6738179 | Method and device for shaping the waveform of an optical signal | Shigeki Watanabe | 2004-05-18 |