Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7408146 | Signal light transmitting apparatus, signal light transmitting system using the same, and signal light transmitting method | — | 2008-08-05 |
| 7136593 | Wavelength-division multiplexed optical transmission system | — | 2006-11-14 |
| 7061665 | Optical fiber transmission system, raman gain slope measuring device and raman gain slope measuring method | Masaaki Sobe | 2006-06-13 |
| 7024123 | Optical data transmitting apparatus and method | — | 2006-04-04 |
| 6934016 | Method and apparatus for measuring Raman gain, method and apparatus for controlling Raman gain, and Raman amplifier | Masaaki Sobe | 2005-08-23 |
| 6922504 | Optical power device protector and optical transmission system using it, and method for protecting optical power device | — | 2005-07-26 |
| 6915082 | Optical data transmitting apparatus and method | — | 2005-07-05 |
| 6904064 | Optical fiber transmission system, raman gain control device and raman gain control method | Masaaki Sobe | 2005-06-07 |
| 6738132 | Method and apparatus for measuring Raman gain, method and apparatus for controlling Raman gain, and Raman amplifier | Masaaki Sobe | 2004-05-18 |
| 6697393 | Laser amplifier, method and apparatus for laser amplification, and laser oscillator | Tadashi Kasamatsu | 2004-02-24 |
| 6421155 | Optical data transmitting apparatus and method | — | 2002-07-16 |
| 6388786 | Method for generating duobinary signal and optical transmitter using the same method | Takashi Ono | 2002-05-14 |
| 6108125 | Optical regenerative repeater | — | 2000-08-22 |
| 6097525 | Method for generating duobinary signal and optical transmitter using the same method | Takashi Ono | 2000-08-01 |
| 6078416 | Optical regenerative repeater | — | 2000-06-20 |
| 5896392 | Device and method for automatically controlling decision points | Takashi Ono | 1999-04-20 |
| 5761228 | Optical clock regenerator | — | 1998-06-02 |
| 5123957 | Method for manufacturing low carbon ferrochrome with high chromium content | Masanori Kato, Toshio Kamatani, Keiichi Nakagawa, Kiyoshi Kawasaki | 1992-06-23 |
| 4927457 | Method of manufacturing low carbon ferro-chromium | Kazumi Ohta, Sotoaki Kawaguchi, Hisao Doyama | 1990-05-22 |
| 4913379 | Rocket flight direction control system | Naminosuke Kubota, Yasumasa Takagi, Kazuyoshi Ninomiya, Nobuo Shimoguti, Mituhiko Terashima +2 more | 1990-04-03 |