Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10883860 | Optical fiber sensor | Kenichi Ohmori, Koji Omichi, Shingo Matsushita | 2021-01-05 |
| 10670812 | Optical fiber | Keisuke Hirakawa, Kazuyuki Hayashi | 2020-06-02 |
| 10246366 | Method of manufacturing optical fiber base material and method of manufacturing optical fiber | Nobuo Oozeki, Tomofumi Arai | 2019-04-02 |
| 10073220 | Optical coupler, laser device, and taper fiber | Tomoyuki Fujita, Ken Katagiri, Kenichi Ohmori, Rintaro Kitahara, Tatsuya Kishi | 2018-09-11 |
| 9698557 | Optical fiber for amplification and optical fiber amplifier using the same | Tsukasa Hosokawa, Katsuhiro Takenaga, Shoichiro Matsuo, Hirotaka Ono, Makoto Yamada | 2017-07-04 |
| 9673589 | Amplification optical fiber and optical fiber amplifier | Tsukasa Hosokawa, Katsuhiro Takenaga, Shoichiro Matsuo, Hirotaka Ono, Makoto Yamada | 2017-06-06 |
| 9515450 | Amplifying optical fiber and optical amplifier | Shoichiro Matsuo, Katsuhiro Takenaga, Hirotaka Ono, Kyouzou Tsujikawa, Makoto Yamada +1 more | 2016-12-06 |
| 9252556 | Amplifying optical fiber and optical amplifier | Shoichiro Matsuo, Katsuhiro Takenaga, Hirotaka Ono, Kyouzou Tsujikawa, Makoto Yamada +1 more | 2016-02-02 |
| 8941912 | Ytterbium-doped optical fiber, fiber laser and fiber amplifier | Shoji Tanigawa, Teruno Nakaguma, Tomofumi Arai | 2015-01-27 |
| 8774590 | Ytterbium-doped optical fiber | Shoji Tanigawa, Tomofumi Arai | 2014-07-08 |
| 8693833 | Manufacturing method for optical fiber preform and optical fiber | Shoji Tanigawa | 2014-04-08 |
| 8660396 | Multi-cladding optical fiber, optical fiber module, fiber laser, and fiber amplifier | Shoji Tanigawa, Katsuhiro Takenaga, Kunimasa Saitoh | 2014-02-25 |
| 8375749 | Method for fabricating porous silica preform | Takakazu Gotoh, Naritoshi Yamada, Koichi Harada | 2013-02-19 |
| 8363313 | Ytterbium-doped optical fiber, fiber laser, and fiber amplifier | Teruno Nakaguma, Shoji Tanigawa | 2013-01-29 |
| 8125705 | Processing method for suppressing photodarkening in Yb-doped optical fibers, photodarkening-suppressed Yb-doped optical fiber, and fiber laser | Hideyuki Hosoya | 2012-02-28 |
| 8113724 | Optical communication module, manufacturing method therefor, and optical transceiver | Yoshihiro Terada, Masakazu Ohashi, Koji Azegami | 2012-02-14 |
| 7647792 | Method for fabricating porous silica preform | Takakazu Gotoh, Naritoshi Yamada, Koichi Harada | 2010-01-19 |