Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12140426 | Optical coherence tomography system | Stefan Nevlacsil | 2024-11-12 |
| 8078026 | Device for canceling the wavelength dependence of the nonlinearity coefficient of microstructured fibers | Shigeki Watanabe | 2011-12-13 |
| 7773886 | Optical regenerator in optical fiber communication system | Shigeki Watanabe | 2010-08-10 |
| 7477446 | Raman amplification system utilizing modulated second-order raman pumping | Takafumi Terahara | 2009-01-13 |
| 7428349 | Adaptive polarization adjustment apparatus for controlling polarization of light inputted to polarization-maintaining waveguide components | Shigeki Watanabe | 2008-09-23 |
| 7415182 | Optical fiber cable | Takafumi Terahara, Takeshi Hoshida | 2008-08-19 |
| 7372622 | Optical transmission system, optical repeater, and optical transmission method | Kentaro Nakamura, Takafumi Terahara, Junichi Kumasako | 2008-05-13 |
| 7099541 | Optical fiber cable | Takafumi Terahara, Takeshi Hoshida | 2006-08-29 |
| 7075709 | Optical transmission system, optical repeater, and optical transmission method | Kentaro Nakamura, Takafumi Terahara, Junichi Kumasako | 2006-07-11 |
| 7054060 | Raman amplification system utilizing bi-directional pumping | Takafumi Terahara | 2006-05-30 |
| 6941074 | Bidirectionally transmittable optical wavelength division multiplexed transmission system | Kentaro Nakamura, Takafumi Terahara, Junichi Kumasako | 2005-09-06 |
| 6934454 | Distributed optical amplifying apparatus, optical communication station, optical communication system, and optical fiber cable | Takafumi Terahara, Takeshi Hoshida | 2005-08-23 |
| 6856453 | Control scheme for long wavelength channels in wideband WDM optical fiber transmission system | Takafumi Terahara | 2005-02-15 |
| 6721481 | Distributed optical fiber amplifier using fiber with specific characteristic values | Takafumi Terahara, Takeshi Hoshida | 2004-04-13 |