Issued Patents All Time
Showing 1–25 of 82 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6867908 | Optical amplifier having various control circuitry | Aritomo Uemura, Kiwami Matsushita, Yukio Horiuchi, Masatoshi Suzuki, Noboru Edagawa +1 more | 2005-03-15 |
| 6614588 | Optical amplifier having various control circuitry | Aritomo Uemura, Kiwami Matsushita, Yukio Horiuchi, Masatoshi Suzuki, Noboru Edagawa +1 more | 2003-09-02 |
| 6556325 | Optical repeater monitoring system and a method thereof | Yukio Horiuchi, Masatoshi Suzuki, Shu Yamamoto | 2003-04-29 |
| 6188510 | Optical amplifying transmission system and optical amplifying repeater | Noboru Edagawa, Shu Yamamoto | 2001-02-13 |
| 6188508 | Control signal superimposer | Yukio Horiuchi, Masatoshi Suzuki, Shu Yamamoto | 2001-02-13 |
| 6181449 | Wavelength division multiplexed optical processing device and optical communication transmission path | Hidenori Taga, Kaoru Imai, Masatoshi Suzuki, Shu Yamamoto | 2001-01-30 |
| 6160649 | Optical power measuring system terminal station and repeater therefor | Yukio Horiuchi, Shu Yamamoto | 2000-12-12 |
| 6091538 | Gain equalizing apparatus | Noriyuki Takeda, Noboru Edagawa, Hidenori Taga | 2000-07-18 |
| 6021235 | Wavelength-division multiplexing optical transmission system | Shu Yamamoto, Hidenori Taga, Masatoshi Suzuki, Noboru Edagawa | 2000-02-01 |
| 6005702 | Optical transmission device, WDM optical transmission apparatus, and optical transmission system using return-to-zero optical pulses | Masatoshi Suzuki, Itsuro Morita, Noboru Edagawa, Shu Yamamoto | 1999-12-21 |
| 5978529 | Gain equalizer and optical amplifying transmission line | Hidenori Taga, Noriyuki Takeda, Masatoshi Suzuki, Shu Yamamoto | 1999-11-02 |
| 5966228 | Optical transmission system and optical repeater | Shu Yamamoto, Masatoshi Suzuki, Noboru Edagawa, Hidenori Taga | 1999-10-12 |
| 5937126 | Optically amplifying/repeating transmission system and optical amplifier | Shu Yamamoto, Noboru Edagawa, Hidenori Taga | 1999-08-10 |
| 5926300 | Optical add-drop multiplexer | Takayuki Miyakawa, Hidenori Taga, Shu Yamamoto | 1999-07-20 |
| 5920413 | Method and device for optical add/drop multiplexing using high speed polarization scrambler | Takayuki Miyakawa, Hidenori Taga, Shu Yamamoto | 1999-07-06 |
| 5912750 | Optical transmission line | Noriyuki Takeda, Takayuki Miyakawa, Hidenori Taga, Shu Yamamoto | 1999-06-15 |
| 5898714 | Optical pulse generator | Itsuro Morita, Noboru Edagawa, Masatoshi Suzuki, Shu Yamamoto | 1999-04-27 |
| 5892608 | Optical receiver device for dark soliton lightwave | Masatoshi Suzuki, Noboru Edagawa, Hidenori Taga, Shu Yamamoto | 1999-04-06 |
| 5889607 | Optical modulator, optical short pulse generating device, optical waveform shaping device, and optical demultiplexer device | Masatoshi Suzuki, Noboru Edagawa, Itsuro Morita, Shu Yamamoto | 1999-03-30 |
| 5883734 | Optical switch with reduced polarization dependency and no waveform deformation and frequency shift | Masatoshi Suzuki | 1999-03-16 |
| 5877878 | Surveillance method of optical amplifier-repeater transmission system | Yukio Horiuchi, Shu Yamamoto | 1999-03-02 |
| 5872647 | Optical transmitting terminal | Hidenori Taga, Shu Yamamoto, Noboru Edagawa | 1999-02-16 |
| 5864421 | Optical frequency shifter and optical soliton-like return-to-zero pulse transmission system using optical frequency shifter | Masatoshi Suzuki, Noboru Edagawa, Itsuro Morita, Shu Yamamoto | 1999-01-26 |
| 5822095 | Optical add-drop multiplexer | Hidenori Taga, Takayuki Miyakawa | 1998-10-13 |
| 5808789 | Optically amplifying transmission system | Noboru Edagawa, Hidenori Taga, Masatoshi Suzuki, Itsuro Morita, Shu Yamamoto | 1998-09-15 |