Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8270780 | Optical switch system using optical interference | Tetsuya Kawanishi, Takahide Sakamoto, Masahiro Tsuchiya | 2012-09-18 |
| 8170422 | Frequency shift keying demodulator | Tetsuya Kawanishi | 2012-05-01 |
| 8023775 | Super flat optical frequency comb signal generator | Takahide Sakamoto, Tetsuya Kawanishi, Masahiro Tsuchiya | 2011-09-20 |
| 8014684 | Modulation light signal generating device and FSK modulation signal generating device | Tetsuya Kawanishi, Hiroshi Harada | 2011-09-06 |
| 8005371 | Multi-wavelength signal generation device and multi-wavelength light generation method | Tetsuya Kawanishi | 2011-08-23 |
| 7991298 | DSB-SC modulation system capable of erasing carrier and secondary component | Tetsuya Kawanishi, Takahide Sakamoto, Masahiro Tsuchiya | 2011-08-02 |
| 7962039 | Multiple wavelength light source, and generation method for multiple wavelength light | Tetsuya Kawanishi | 2011-06-14 |
| 7957653 | Phase control optical FSK modulator | Tetsuya Kawanishi, Takahide Sakamoto, Masahiro Tsuchiya | 2011-06-07 |
| 7957652 | Optical FSK/SSB modulator having intensity balance function | Tetsuya Kawanishi, Takahide Sakamoto, Masahiro Tsuchiya | 2011-06-07 |
| 7936996 | Automatic adjusting system of frequency shift keying modulator | Tetsuya Kawanishi, Takahide Sakamoto, Masahiro Tsuchiya | 2011-05-03 |
| 7864330 | Method and device for calibrating a light intensity measurement device | Tetsuya Kawanishi, Takahide Sakamoto, Masahiro Tsuchiya | 2011-01-04 |
| 7853153 | Fourth harmonic generating system using optical double side-band suppressed carrier modulator | Tetsuya Kawanishi, Takahide Sakamoto, Masahiro Tsuchiya | 2010-12-14 |
| 7711215 | Optical amplitude modulation system capable of cancelling high order component | Tetsuya Kawanishi, Takahide Sakamoto, Masahiro Tsuchiya | 2010-05-04 |
| 7689067 | Nested modulator | Junichiro Ichikawa, Kaoru Higuma, Futoshi Yamamoto, Satoshi Oikawa, Shingo Mori +4 more | 2010-03-30 |
| 7660030 | Reciprocating optical modulation system | Tetsuya Kawanishi, Takahide Sakamoto, Masahiro Tsuchiya | 2010-02-09 |
| 7555223 | UWB signal generator using optical FSK modulator | Tetsuya Kawanishi | 2009-06-30 |
| 7526209 | Optical frequency shift keying modulator | Tetsuya Kawanishi | 2009-04-28 |
| 7522844 | Multiple-wavelength optical modulation apparatus | Tetsuya Kawanishi | 2009-04-21 |
| 7425696 | Photoelectric oscillator | Tetsuya Kawanishi, Takahide Sakamoto, Satoshi Shinada | 2008-09-16 |
| 7421209 | Optical wavelength multiplexing FSK modulation method | Tetsuya Kawanishi | 2008-09-02 |
| 7245787 | Bias adjustment method for optical SSB modulator or optical FSK modulator | Tetsuya Kawanishi | 2007-07-17 |
| 7239763 | Optical SSB modulator | Tetsuya Kawanishi, Kaoru Higuma, Shingo Mori | 2007-07-03 |
| 7236661 | Tunable dispersion compensation apparatus | Tetsuya Kawanishi, Sze Yun Set, Mark Jablonski, Yuuichi Tanaka | 2007-06-26 |
| 7212331 | Reciprocating optical modulator | Tetsuya Kawanishi | 2007-05-01 |
| 7106497 | Low-noise optical frequency converter | Tetsuya Kawanishi | 2006-09-12 |