Issued Patents All Time
Showing 26–50 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7289687 | Polarization-maintaining optical fiber | Katsuaki Izoe, Yukihiro Sakaguchi, Tatsuya Itoh | 2007-10-30 |
| 7267495 | Connection method and connecting structure for photonic crystal fiber | Ryuji Suzuki, Kazuhiko Aikawa, Ning Guan | 2007-09-11 |
| 7263267 | Higher order mode dispersion compensating fiber and mode converter for higher order fiber | Ning Guan, Kazuhiko Aikawa, Masashi Ikeda, Koichi Harada | 2007-08-28 |
| 7242870 | Wavelength division multiplexing system | Ning Guan, Katsuhiro Takenaga | 2007-07-10 |
| 7233728 | Dispersion compensating optical fiber | Kazuhiko Aikawa, Shogo Shimizu, Ryuji Suzuki, Masakazu Nakayama | 2007-06-19 |
| 7212281 | Optical fiber polarization mode dispersion measurement method and measurement device | Shoji Tanigawa, Tomoharu Sagawa, Masataka Ikeda, Shoichiro Matsuo, Koichi Harada | 2007-05-01 |
| 7181115 | Dispersion compensating fiber module, and optical fiber transmission line | Kazuhiko Aikawa, Ryuji Suzuki | 2007-02-20 |
| 7164835 | Optical fiber | Shoichiro Matsuo, Koichi Harada, Masataka Ikeda | 2007-01-16 |
| 7158706 | Optical fiber | Shoichiro Matsuo, Harada Koichi | 2007-01-02 |
| 7139457 | Method for compensating modal dispersion in multimode optical fiber transmission path | Ning Guan, Shinji Habu, Katsuhiro Takenaga, Koichi Harada | 2006-11-21 |
| 7062136 | Optical fiber and optical transmission path | Shoji Tanigawa, Shoichiro Matsuo, Koichi Harada | 2006-06-13 |
| 7043126 | Graded-index multimode fiber and manufacturing method therefor | Ning Guan, Katsuhiro Takenaga | 2006-05-09 |
| 7036995 | Joint loss minimizing connection structure for dispersion compensating optical fiber | Takaaki Suzuki, Shogo Shimizu, Kazuhiko Aikawa | 2006-05-02 |
| 6965719 | Dispersion compensating optical fiber and dispersion compensating optical fiber module | Kazuhiko Aikawa, Yutaka Nagasawa, Shogo Shimizu, Takaaki Suzuki, Masakazu Nakayama +3 more | 2005-11-15 |
| 6937805 | Dispersion compensating fiber and dispersion compensating fiber module | Kazuhiko Aikawa, Shogo Shimizu, Takaaki Suzuki, Ryuji Suzuki, Masakazu Nakayama | 2005-08-30 |
| 6928211 | Optical fiber and optical transmission path that uses the optical fiber | Shoji Tanigawa, Shoichiro Matsuo | 2005-08-09 |
| 6895140 | Single-mode optical fiber and composite optical line | Shoichiro Matsuo, Koichi Harada | 2005-05-17 |
| 6876803 | Optical transmission system | Kazuhiko Aikawa, Shogo Shimizu, Masakazu Nakayama | 2005-04-05 |
| 6819847 | Optical fiber and optical transmission path | Shoichiro Matsuo, Koichi Harada | 2004-11-16 |
| 6738549 | Polarization maintaining optical fiber and production method for polarization maintaining optical fiber preform | Tadayuki Inaba, Shigeru Emori, Naoki Shamoto | 2004-05-18 |
| 6687442 | Optical fiber for preserving plane of polarization | Naoki Shamoto, Akira Wada | 2004-02-03 |
| 6597847 | Optical fiber for preserving plane of polarization | Naoki Shamoto, Fumihiko Nishimura | 2003-07-22 |
| 6519402 | Dispersion compensating optical fiber, and dispersion compensating optical fiber module | Kazuhiko Aikawa, Takaaki Suzuki | 2003-02-11 |
| 5995695 | Dispersion compensating optical fiber | Kazuhiko Aikawa, Akira Wada, Ryozo Yamauchi | 1999-11-30 |
| 5949934 | Optical waveguide grating and production method therefor | Kensuke Shima, Michihiro Nakai, Hiroshi Hidaka, Satoshi Okude, Akira Wada +4 more | 1999-09-07 |