Issued Patents All Time
Showing 1–25 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10663653 | Multicore fiber for communication | Katsuhiro Takenaga, Yusuke Sasaki, Kunimasa Saitoh | 2020-05-26 |
| 10156674 | Multicore fiber for communication | Katsuhiro Takenaga, Yusuke Sasaki, Kunimasa Saitoh | 2018-12-18 |
| 10094976 | Dispersion shifted optical fiber | Takaaki Suzuki | 2018-10-09 |
| 10073217 | Multicore optical fiber and method for manufacturing multicore optical fiber | Itaru Ishida | 2018-09-11 |
| 10042114 | Multicore fiber for communication | Katsuhiro Takenaga, Yusuke Sasaki, Kunimasa Saitoh | 2018-08-07 |
| 9964697 | Optical fiber | Ryo Maruyama, Shunichirou Hirafune | 2018-05-08 |
| 9733424 | Multicore fiber and method of manufacturing the same | Itaru Ishida | 2017-08-15 |
| 9698557 | Optical fiber for amplification and optical fiber amplifier using the same | Tsukasa Hosokawa, Kentaro Ichii, Katsuhiro Takenaga, Hirotaka Ono, Makoto Yamada | 2017-07-04 |
| 9673589 | Amplification optical fiber and optical fiber amplifier | Tsukasa Hosokawa, Kentaro Ichii, Katsuhiro Takenaga, Hirotaka Ono, Makoto Yamada | 2017-06-06 |
| 9586852 | Method of manufacturing preform for multicore fiber and method of manufacturing multicore fiber | Itaru Ishida | 2017-03-07 |
| 9562827 | Measuring method of longitudinal distribution of bending loss of optical fiber, measuring method of longitudinal distribution of actual bending loss value of optical fiber, test method of optical line, manufacturing method of optical fiber cable, manufacturing method of optical fiber cord, and manufacturing method of optical fiber | Shoji Tanigawa, Itaru Ishida, Toshio Kurashima, Kazuhide NAKAJIMA, Tomoya Shimizu +2 more | 2017-02-07 |
| 9557476 | Multi-core fiber | Kunimasa Saitoh, Masanori Koshiba | 2017-01-31 |
| 9529146 | Multicore fiber and method of manufacture of the same | Itaru Ishida | 2016-12-27 |
| 9529144 | Multicore fiber | Itaru Ishida | 2016-12-27 |
| 9515450 | Amplifying optical fiber and optical amplifier | Katsuhiro Takenaga, Kentaro Ichii, Hirotaka Ono, Kyouzou Tsujikawa, Makoto Yamada +1 more | 2016-12-06 |
| 9507082 | Two-mode optical fiber and light transmission path | Ryo Maruyama, Nobuo Kuwaki | 2016-11-29 |
| 9470840 | Multicore fiber | Itaru Ishida | 2016-10-18 |
| 9297952 | Optical fiber and optical transmission line | Ryo Maruyama, Nobuo Kuwaki, Masaharu Ohashi | 2016-03-29 |
| 9291768 | Multicore fiber | Itaru Ishida | 2016-03-22 |
| 9252872 | Crosstalk measuring method and crosstalk measuring device | Hiroki Hamaguchi, Itaru Ishida, Yukihiro Goto, Kazuhide NAKAJIMA | 2016-02-02 |
| 9252556 | Amplifying optical fiber and optical amplifier | Katsuhiro Takenaga, Kentaro Ichii, Hirotaka Ono, Kyouzou Tsujikawa, Makoto Yamada +1 more | 2016-02-02 |
| 9250384 | Multicore fiber | — | 2016-02-02 |
| 9223083 | Multicore fiber | Itaru Ishida | 2015-12-29 |
| 9199411 | Method of connecting multi-core fibers | Yoko Arakawa, Katsuhiro Takenaga | 2015-12-01 |
| 9188735 | Optical fiber, optical transmission line, and method for manufacturing optical fiber | Ryo Maruyama, Nobuo Kuwaki, Masaharu Ohashi | 2015-11-17 |