Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11519759 | Cable, cable shape sensing system, sensing system, and cable shape sensing method | Shigehiro Takasaka, Ryuichi Sugizaki | 2022-12-06 |
| 10718658 | Optical fiber sensor, seismic prospecting method, method of measuring distribution of petroleum/natural gas reservoir layer, strain detection method, and method of specifying position of a fissure in stratum | — | 2020-07-21 |
| 9722388 | Multi-core optical amplifying fiber device and multi-core optical fiber amplifier | Koichi Maeda, Yukihiro TSUCHIDA, Shigehiro Takasaka, Ryuichi Sugizaki | 2017-08-01 |
| 7869014 | System for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber | Yu Mimura, Misao Sakano, Osamu Aso, Takeshi Nakajima, Katsutoshi Takahashi | 2011-01-11 |
| 7769298 | Light source in optical transmission system, waveform shaper, optical pulse train generator and optical reproduction system | Koji Igarashi, Yoshihiro Emori, Atsushi Oguri, Shu Namiki, Osamu Aso | 2010-08-03 |
| 7693377 | Optical fiber module and optical device | Masanori Takahashi, Jiro Hiroishi, Takeshi Yagi | 2010-04-06 |
| 7630607 | Optical fiber device | Masanori Takahashi | 2009-12-08 |
| 7536074 | Optical fiber | — | 2009-05-19 |
| 7447444 | Light source in optical transmission system, waveform shaper, optical pulse train generator, and optical reproduction system | Koji Igarashi, Yoshihiro Emori, Atsushi Oguri, Shu Namiki, Osamu Aso | 2008-11-04 |
| 7424191 | System for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber | Yu Mimura, Misao Sakano, Osamu Aso, Takeshi Nakajima, Katsutoshi Takahashi | 2008-09-09 |
| 7408701 | Multi-frequency light source | Osamu Aso, Shunichi Matushita, Misao Sakano | 2008-08-05 |
| 7155095 | Method for efficient four-wave mixing generation and short pulse generation equipment using the method | Osamu Aso, Shu Namiki | 2006-12-26 |
| 7146085 | Method and system for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber, method of manufacturing optical fibers, method of measuring wavelength-dispersion distribution, method of compensating for measurement errors, and method of specifying conditions of measurement | Yu Mimura, Misao Sakano, Osamu Aso, Takeshi Nakajima, Katsutoshi Takahashi | 2006-12-05 |
| 7054057 | Multi-frequency light source | Osamu Aso, Shunichi Matushita, Misao Sakano | 2006-05-30 |
| 7003202 | Method and system for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber, method of manufacturing optical fibers, method of measuring wavelength-dispersion distribution, method of compensating for measurement errors, and method of specifying conditions of measurement | Yu Mimura, Misao Sakano, Osamu Aso, Takeshi Nakajima, Katsutoshi Takahashi | 2006-02-21 |
| 6920263 | Optical pulse generator | Osamu Aso, Shunichi Matsushita, Misao Sakano, Shu Namiki | 2005-07-19 |
| 6892015 | Optical pulse waveform conversion | Osamu Aso, Misao Sakano | 2005-05-10 |
| 6522818 | Method for efficient four-wave mixing generation and short pulse generation equipment using the method | Osamu Aso, Shu Namiki | 2003-02-18 |
| 5808768 | Optical telecommunications system | Masahito Morimoto, Hijiri Nimura, Haruki Ogoshi | 1998-09-15 |