Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12399317 | Optical fiber bundle structure, optical fiber connection structure, and optical fiber bundle structure manufacturing method | Kengo Watanabe, Masanori Takahashi, Ryuichi Sugizaki, Koichi Maeda | 2025-08-26 |
| 12248171 | Multi-core optical amplifying fiber, multi-core optical fiber amplifier, and optical communication system | Koichi Maeda, Ryuichi Sugizaki | 2025-03-11 |
| 12222541 | Optical fiber bundle structure, optical connector, optical fiber connection structure, and method of manufacturing optical fiber bundle structure | Kohei KAWASAKI, Ryuichi Sugizaki, Masayoshi Tsukamoto, Masanori Takahashi, Koichi Maeda | 2025-02-11 |
| 12204141 | Optical fiber bundle structure, optical connector, optical fiber connection structure, and method of manufacturing optical fiber bundle structure | Kohei KAWASAKI, Ryuichi Sugizaki, Masayoshi Tsukamoto, Masanori Takahashi, Koichi Maeda | 2025-01-21 |
| 11940649 | Optical fiber bundle structure, optical connector, optical fiber connection structure, and method of manufacturing optical fiber bundle structure | Kohei KAWASAKI, Ryuichi Sugizaki, Masayoshi Tsukamoto, Masanori Takahashi, Koichi Maeda | 2024-03-26 |
| 11519759 | Cable, cable shape sensing system, sensing system, and cable shape sensing method | Masateru Tadakuma, Ryuichi Sugizaki | 2022-12-06 |
| 11073656 | Optical coupler and optical amplifier | Koichi Maeda | 2021-07-27 |
| 10816873 | Optical amplifier, optical amplification system, wavelength converter, and optical communication system | — | 2020-10-27 |
| 9948057 | Optical amplifier, optical amplifying system, wavelength converter, and optical communication system | — | 2018-04-17 |
| 9722388 | Multi-core optical amplifying fiber device and multi-core optical fiber amplifier | Masateru Tadakuma, Koichi Maeda, Yukihiro TSUCHIDA, Ryuichi Sugizaki | 2017-08-01 |
| 9270076 | Optical amplifier, optical amplifying system, wavelength converter, optical amplification method, and optical communication system | Yu Mimura | 2016-02-23 |
| 8873898 | Polarization independent wavelength converter and polarization independent wavelength conversion method | — | 2014-10-28 |
| 8494378 | Synchronous optical signal generating device and synchronous optical signal generating method | Yasuyuki Ozeki, Misao Sakano | 2013-07-23 |
| 8059966 | Wavelength division multiplex optical regeneration system and wavelength division multiplex optical regeneration method | Koji Igarashi, Shunichi Matsushita, Shu Namiki, Takashi Inoue, Hideaki Tobioka +1 more | 2011-11-15 |
| 7715725 | Lock detector and optical phase-locked loop system | Yasuyuki Ozeki | 2010-05-11 |