Issued Patents All Time
Showing 26–50 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7606503 | Pulse signal demodulation device | Tsuyoshi Ikushima | 2009-10-20 |
| 7539419 | Optical transmission system for radio access and high frequency optical transmitter | Hiroyuki Sasai | 2009-05-26 |
| 7441396 | Manufacture method of power transmission chain and pin-retainer jig | — | 2008-10-28 |
| 7424222 | Optical packet exchanger | Toru Shiozaki | 2008-09-09 |
| 7382986 | Signal converter, optical transmitter and optical fiber transmission system | Jun Ohya, Seiichiro Kawashima | 2008-06-03 |
| RE40270 | Optical amplifying device | Toru Shiozaki | 2008-04-29 |
| 7349634 | Optical transmission system for radio access and high frequency optical transmitter | Hiroyuki Sasai | 2008-03-25 |
| 7321733 | Split-band optical transmission system and optical transmission method used therein | Tsuyoshi Ikushima | 2008-01-22 |
| RE39785 | System for optically transmitting frequency-division-multiplexed signal and transmitter therefor | — | 2007-08-21 |
| 7236701 | Optical transmission system for performing communication using a plurality of communication lines | Toshihiko Yasue, Hiroyuki Sasai | 2007-06-26 |
| 7218829 | Optical transmission module | Satoshi Furusawa | 2007-05-15 |
| 7164858 | Optical transmission system and optical transmitter used therein | Toru Shiozaki | 2007-01-16 |
| 7151896 | Burst optical communication apparatus | — | 2006-12-19 |
| 7110672 | Optical transmission system for frequency-multiplexed signal | — | 2006-09-19 |
| 7076166 | Low-cost optical burst transmission system, apparatus, and method | Toru Shiozaki, Yoshikazu Ishii, Hiroaki Asano, Kuniaki Utsumi, Katsumi Iwatsuki +3 more | 2006-07-11 |
| 7062172 | Optical transmission system for frequency-multiplexed signal | — | 2006-06-13 |
| 7058300 | Data transmission rate arbitration method and optical communication apparatus | Keisuke Kinoshita, Satoshi Furusawa, Susumu Morikura | 2006-06-06 |
| 7035551 | Optical transmitter | Toru Shiozaki | 2006-04-25 |
| 6954593 | Burst optical communication apparatus | — | 2005-10-11 |
| 6928246 | Optical transmission system for frequency-multiplexed signal | — | 2005-08-09 |
| 6909855 | FM modulator | Kuniaki Utsumi, Satoshi Furusawa | 2005-06-21 |
| 6891995 | Wavelength division multiplex transmission system | Tsuyoshi Ikushima, Toshihiko Yasue | 2005-05-10 |
| 6834135 | Optical switching system | Toshihiko Yasue | 2004-12-21 |
| 6832047 | Optical transmission system for frequency-multiplexed signal | — | 2004-12-14 |
| 6775483 | System, device, and method for wavelength-division multiplex optical transmission | Tsuyoshi Ikushima, Hiroyuki Sasai | 2004-08-10 |