Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12135255 | Optical fiber measurement device and method for bending optical fiber | Takeshi Yoshida, Akira Oshima, Ryo Omiya | 2024-11-05 |
| 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 | Itaru Ishida, Shoichiro Matsuo, Toshio Kurashima, Kazuhide NAKAJIMA, Tomoya Shimizu +2 more | 2017-02-07 |
| 9366807 | Method of producing preform for coupled multi-core fiber, method of producing coupled multi-core fiber, and coupled multi-core fiber | Katsuhiro Takenaga | 2016-06-14 |
| 9229157 | Sold photonic band gap fiber, fiber module using sold photonic band gap fiber, fiber amplifier, and fiber laser | Katsuhiro Takenaga, Masahiro Kashiwagi, Kunimasa Saitoh | 2016-01-05 |
| 9175946 | Measuring method of hole diameter, hole position, hole surface roughness, or bending loss of holey optical fiber, manufacturing method of holey optical fiber, and test method of optical line of holey optical fiber | Itaru Ishida, Shoichiro Matsuo, Toshio Kurashima, Kazuhide NAKAJIMA, Tomoya Shimizu +2 more | 2015-11-03 |
| 9121995 | Optical fiber having holes | Katsuhiro Takenaga, Shoichiro Matsuo, Takashi Matsui, Taiji SAKAMOTO, Kyouzou Tsujikawa +1 more | 2015-09-01 |
| 9008479 | Multicore fiber | Katsuhiro Takenaga | 2015-04-14 |
| 8971684 | Method of producing preform for coupled multi-core fiber, method of producing coupled multi-core fiber, and coupled multi-core fiber | Katsuhiro Takenaga | 2015-03-03 |
| 8941912 | Ytterbium-doped optical fiber, fiber laser and fiber amplifier | Teruno Nakaguma, Tomofumi Arai, Kentaro Ichii | 2015-01-27 |
| 8774590 | Ytterbium-doped optical fiber | Kentaro Ichii, Tomofumi Arai | 2014-07-08 |
| 8750663 | Coupled multicore fiber | Katsuhiro Takenaga | 2014-06-10 |
| 8693833 | Manufacturing method for optical fiber preform and optical fiber | Kentaro Ichii | 2014-04-08 |
| 8660396 | Multi-cladding optical fiber, optical fiber module, fiber laser, and fiber amplifier | Kentaro Ichii, Katsuhiro Takenaga, Kunimasa Saitoh | 2014-02-25 |
| 8363313 | Ytterbium-doped optical fiber, fiber laser, and fiber amplifier | Teruno Nakaguma, Kentaro Ichii | 2013-01-29 |
| 8040926 | Multi-core fiber for optical pumping device and manufacturing method thereof, optical pumping device, fiber laser and fiber amplifier | Michihiro Nakai | 2011-10-18 |
| 7840107 | Optical pumping device, optical amplifier, fiber laser, and multicore fiber for optical pumping device | Hironori Tanaka, Manabu Saito, Tetsuya Sakai, Tomoharu Kitabayashi | 2010-11-23 |
| 7606460 | Optical fiber and transmission system, and wavelength division multiplexing system | Shoichiro Matsuo, Kuniharu Himeno | 2009-10-20 |
| 7526168 | Optical fiber, transmission system, and wavelength division multiplexing system | Shoichiro Matsuo, Keisuke Uchiyama, Kuniharu Himeno | 2009-04-28 |
| 7298934 | Optical fiber and method of measuring polarization mode dispersion of optical fiber | Ryuichiro Goto, Shoichiro Matsuo, Kuniharu Himeno | 2007-11-20 |
| 7212281 | Optical fiber polarization mode dispersion measurement method and measurement device | Tomoharu Sagawa, Masataka Ikeda, Shoichiro Matsuo, Kuniharu Himeno, Koichi Harada | 2007-05-01 |
| 7062136 | Optical fiber and optical transmission path | Shoichiro Matsuo, Kuniharu Himeno, Koichi Harada | 2006-06-13 |
| 6928211 | Optical fiber and optical transmission path that uses the optical fiber | Shoichiro Matsuo, Kuniharu Himeno | 2005-08-09 |
| 6785453 | Dispersion shifted optical fiber | Shoichiro Matsuo | 2004-08-31 |
| 6694079 | Disperson-shifted optical fiber employing dual shape core profile | Shoichiro Matsuo, Hiroshi Kutami | 2004-02-17 |
| 6546177 | Dispersion shifted optical fiber | Shoichiro Matsuo, Tomio Abiru | 2003-04-08 |