Issued Patents All Time
Showing 26–50 of 109 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7484387 | Method of making a microstructured optical fiber | Takemi Hasegawa, Masashi Onishi, Masayuki Nishimura | 2009-02-03 |
| 7382956 | Optical fibers | Yoshinori Yamamoto | 2008-06-03 |
| 7359602 | Optical transmission line constituting method, optical transmission line and optical fiber | Yoshinori Yamamoto, Kazunari Fujimoto | 2008-04-15 |
| 7321709 | Optical cable | Tomoyuki Yokokawa | 2008-01-22 |
| 7292748 | Dispersion-compensating system | Masao Tsukitani, Toshiaki Okuno | 2007-11-06 |
| 7197242 | Chromatic-dispersion measuring apparatus and method | — | 2007-03-27 |
| 7194171 | Dispersion compensating optical fiber, dispersion compensating device, optical transmission line and optical transmission system | Masao Tsukitani, Eiji Yanada, Yuichi Ohga | 2007-03-20 |
| 7190868 | Optical transmission line | Yoshinori Yamamoto | 2007-03-13 |
| 7153034 | Method of constructing an optical transmission line and an optical transmission line | Masashi Onishi, Takemi Hasegawa, Masayuki Nishimura | 2006-12-26 |
| 7079769 | Dispersion-compensating system | Masa Tsukitani, Toshiaki Okuno | 2006-07-18 |
| 7076140 | Optical fiber, dispersion compensator, optical transmission line and optical communications system | Yoshinori Yamamoto, Takashi Fujii, Takatoshi Kato | 2006-07-11 |
| 7046884 | Optical fiber, optical fiber tape, optical cable and optical connector with optical fiber | Tomoyuki Hattori | 2006-05-16 |
| 7043131 | Optical device and a making method thereof | Yasushi Koyano, Shigeru Tanaka, Kohei Kobayashi, Masashi Onishi, Kenji Tamano +1 more | 2006-05-09 |
| 7043127 | Microstructured optical fiber | Takemi Hasegawa, Daizo Nishioka, Tomohiko Ueda, Toshifumi Hosoya | 2006-05-09 |
| 6952309 | Optical amplifier and optical amplification method | Tetsufumi Tsuzaki, Masayuki Nishimura, Masayuki Shigematsu, Hitoshi Hatayama | 2005-10-04 |
| 6901197 | Microstructured optical fiber | Takemi Hasegawa, Daizo Nishioka, Tomohiko Ueda, Toshifumi Hosoya | 2005-05-31 |
| 6868213 | Optical fiber and production method therefor | Takemi Hasegawa, Masashi Onishi, Shinji Ishikawa | 2005-03-15 |
| 6859598 | Microstructured optical fiber | Takemi Hasegawa, Masayuki Nishimura | 2005-02-22 |
| 6859595 | Optical fiber and optical transmission system including the same | Takatoshi Kato, Shigeru Tanaka | 2005-02-22 |
| 6853766 | Dispersion-compensating module | Masao Tsukitani, Toshiaki Okuno, Shigeru Tanaka | 2005-02-08 |
| 6805497 | Optical transmission line | Shinji Ishikawa, Motonori Nakamura, Masao Tsukitani | 2004-10-19 |
| 6791744 | Raman amplification optical fiber, optical fiber coil, raman amplifier, and optical communication system | Motoki Kakui, Masashi Onishi, Toshiki Tanaka, Takao Naito | 2004-09-14 |
| 6782151 | Raman amplifier, optical transmission system and optical fiber | Masayuki Nishimura, Shigeru Tanaka | 2004-08-24 |
| 6766088 | Optical fiber and method for making the same | Takemi Hasegawa, Masashi Onishi, Masayuki Nishimura | 2004-07-20 |
| 6744954 | Submarine optical cable, optical fiber unit employed in the submarine optical cable, and method of making optical fiber unit | Shigeru Tanaka, Itaru Sakabe, Takeo Tsurumi, Yasushi Ito | 2004-06-01 |