Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9783450 | Method of producing glass preform and optical fiber | Ryo Miyabe, Keiichi Aiso | 2017-10-10 |
| 9075185 | Hole-assisted optical fiber | Iwao Shimotakahara, Ryuichi Sugizaki, Takeshi Yagi, Tomoya Shimizu, Takashi Matsui +3 more | 2015-07-07 |
| 8181487 | Optical fiber preform manufacturing method | Ryuichi Sugizaki, Iwao Shimotakahara, Harumi Inaba, Takeshi Yagi, Tomoya Shimizu +2 more | 2012-05-22 |
| 7702205 | Optical fiber | — | 2010-04-20 |
| 7519255 | Optical fiber | Ryuichi Sugizaki | 2009-04-14 |
| 7505659 | Optical fiber and optical transmission line and optical communication system including such optical fiber | Ryuichi Sugizaki, Kazunori Mukasa, Takeshi Yagi | 2009-03-17 |
| 7321711 | Optical fiber and optical transmission line and optical communication system including such optical fiber | — | 2008-01-22 |
| 7164832 | Optical fiber and optical communication system employing the optical fiber | — | 2007-01-16 |
| 7164830 | Nonlinear optical fiber and optical signal processing apparatus using the optical fiber | Jiro Hiroishi, Ryo Miyabe, Ryuichi Sugizaki | 2007-01-16 |
| 7123803 | Optical fiber and optical transmission line and optical communication system including such optical fiber | — | 2006-10-17 |
| 7085463 | Optical fiber and optical transmission line | Fumio Takahashi, Kazunori Mukasa, Satoru Ise | 2006-08-01 |
| 6856744 | Optical fiber and optical transmission line and optical communication system including such optical fiber | — | 2005-02-15 |
| 6795629 | Optical fiber and optical communication system using this optical fiber | Kazunori Mukasa | 2004-09-21 |
| 6768848 | Optical fiber and optical transmission line using the same, and optical transmission system | — | 2004-07-27 |
| 6766087 | Nonlinear dispersion-shifted optical fiber, optical signal processing apparatus using said optical fiber and wavelength converter using said optical fiber | Jiro Hiroishi, Ryuichi Sugizaki | 2004-07-20 |
| 6640036 | Optical fiber and optical communication system using this optical fiber | Kazunori Mukasa | 2003-10-28 |