Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11795097 | Method of producing optical fiber preform and optical fiber | Tomohiro Gonda | 2023-10-24 |
| 11079537 | Optical fiber and manufacturing method of optical fiber | Ryo Miyabe | 2021-08-03 |
| 10676387 | Method of producing optical fiber preform and optical fiber | Tomohiro Gonda | 2020-06-09 |
| 9783450 | Method of producing glass preform and optical fiber | Ryo Miyabe, Naomi Kumano | 2017-10-10 |
| 9225141 | Multi-core amplification optical fiber and multi-core optical fiber amplifier | Yukihiro TSUCHIDA, Koichi Maeda, Yu Mimura, Hiroshi Matsuura, Kengo Watanabe +4 more | 2015-12-29 |
| 8233761 | Optical fiber and optical waveguide | Ryo Miyabe | 2012-07-31 |
| 7826701 | Optical fiber and optical waveguide | Ryo Miyabe | 2010-11-02 |
| 7466479 | Optical fiber for optical amplifier | — | 2008-12-16 |
| 7362939 | Optical fiber for long period grating, long period grating component and manufacturing method of the same | Toshiaki Tsuda, Yasuo Uemura, Takeshi Yagi, Yukio Niino, Kazuhiko Nishiyama +1 more | 2008-04-22 |
| 7206486 | Optical amplification fiber, optical fiber amplifier, and optical communication system | Yoko Moriai | 2007-04-17 |
| 7079738 | Method for manufacturing a glass doped with a rare earth element and fiber for optical amplification using the same | Toshihiro Nakamura, Takeshi Yagi, Hisashi Koaizawa, Yoko Moriai | 2006-07-18 |
| 6903866 | Optical fiber for optical amplifier | — | 2005-06-07 |
| 6766089 | Low-dispersion optical fiber and optical transmission system using the low-dispersion optical fiber | Shinichi Arai, Ryuichi Sugizaki, Naoto Oyama, Jun Terada, Hisashi Koaizawa +1 more | 2004-07-20 |
| 6684018 | Low-dispersion optical fiber and optical transmission system using the low-dispersion optical fiber | Shinichi Arai, Ryuichi Sugizaki, Naoto Oyama, Jun Terada, Hisashi Koaizawa +1 more | 2004-01-27 |
| 6463201 | Light amplification optical fiber and light amplifier using the same | Yoshio Tashiro, Takeshi Yagi | 2002-10-08 |
| 6404967 | Optical fiber and optical transmission line using the same | Shinichi Arai, Ryuichi Sugizaki | 2002-06-11 |
| 6055353 | Optical fiber for optical amplification and optical amplifier using the optical fiber | — | 2000-04-25 |