Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11079537 | Optical fiber and manufacturing method of optical fiber | Keiichi Aiso | 2021-08-03 |
| 9783450 | Method of producing glass preform and optical fiber | Keiichi Aiso, Naomi Kumano | 2017-10-10 |
| 9695079 | Production method of optical fiber preform, and production method of optical fiber | Tomohiro Gonda, Katsunori Imamura, Ryuichi Sugizaki | 2017-07-04 |
| 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 | Keiichi Aiso | 2012-07-31 |
| 7826701 | Optical fiber and optical waveguide | Keiichi Aiso | 2010-11-02 |
| 7809223 | Polarization-maintaining optical fiber, method of manufacturing polarization-maintaining optical-fiber connecting portion, and polarization-maintaining optical-fiber connecting portion | Yu Mimura | 2010-10-05 |
| 7756375 | Optical fiber and waveguide | Ryuichi Sugizaki | 2010-07-13 |
| 7715674 | Optical fiber and waveguide | Ryuichi Sugizaki | 2010-05-11 |
| 7668428 | Optical fiber and optical device | Kazunori Mukasa | 2010-02-23 |
| 7529453 | Optical fiber and optical transmission medium | Yu Mimura | 2009-05-05 |
| 7502540 | Optical fiber and optical transmission medium | Yu Mimura | 2009-03-10 |
| 7164830 | Nonlinear optical fiber and optical signal processing apparatus using the optical fiber | Jiro Hiroishi, Ryuichi Sugizaki, Naomi Kumano | 2007-01-16 |
| 7085464 | Optical fiber having high nonlinearity | Jiro Hiroishi | 2006-08-01 |