Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9075185 | Hole-assisted optical fiber | Naomi Kumano, Ryuichi Sugizaki, Takeshi Yagi, Tomoya Shimizu, Takashi Matsui +3 more | 2015-07-07 |
| 8977096 | Optical fibers | Ryuichi Sugizaki, Takeshi Yagi | 2015-03-10 |
| 8181487 | Optical fiber preform manufacturing method | Ryuichi Sugizaki, Naomi Kumano, Harumi Inaba, Takeshi Yagi, Tomoya Shimizu +2 more | 2012-05-22 |
| 7878712 | Optical fiber, optical fiber ribbon, and optical interconnection system | Harumi Inaba, Ryuichi Sugizaki | 2011-02-01 |
| 7787732 | Optical fiber and optical fiber ribbon, and optical interconnection system | Ryuichi Sugizaki, Harumi Inaba, Takeshi Yagi | 2010-08-31 |
| 7593612 | Optical fiber | — | 2009-09-22 |
| 7583878 | Optical fiber, optical fiber ribbon, and optical interconnection system | Ryuichi Sugizaki, Harumi Inaba, Takeshi Yagi | 2009-09-01 |
| 7574088 | Optical fiber and optical fiber ribbon, and optical interconnection system | Ryuichi Sugizaki, Harumi Inaba, Takeshi Yagi | 2009-08-11 |
| 6754421 | Optical fiber and optical transmission line using the optical fiber | Hideya Moridaira, Junichi Tamura | 2004-06-22 |
| 6522819 | Optical fiber and optical transmission line using the optical fiber | Hideya Moridaira, Junichi Tamura | 2003-02-18 |