Issued Patents All Time
Showing 51–75 of 109 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6724525 | Raman amplifying control unit and optical transmission system | Toshiaki Okuno, Masayuki Nishimura, Shigeru Tanaka | 2004-04-20 |
| 6718105 | Optical fiber | Takemi Hasegawa, Masayuki Nishimura | 2004-04-06 |
| 6711331 | Optical fiber | Shigeru Tanaka | 2004-03-23 |
| 6704135 | Operation mode switching apparatus, Raman amplifier and optical transmission system | Masayuki Nishimura | 2004-03-09 |
| 6701090 | Wavelength division multiplexing signal number monitoring apparatus and method | Hitoshi Hatayama | 2004-03-02 |
| 6684017 | Optical transmission line and optical transmission system including the same | Masao Tsukitani | 2004-01-27 |
| 6666591 | Method for connecting optical fibers | Motonori Nakamura, Osamu Kasuu | 2003-12-23 |
| 6661954 | Optical transmission line including a connected part of optical fibers and connecting method | Takemi Hasegawa, Shinji Ishikawa, Masashi Onishi | 2003-12-09 |
| 6650821 | Optical device and a making method thereof | Yasushi Koyano, Shigeru Tanaka, Kohei Kobayashi, Masashi Onishi, Kenji Tamano +1 more | 2003-11-18 |
| 6636677 | Optical fiber | Takemi Hasegawa, Masayuki Nishimura, Masashi Onishi | 2003-10-21 |
| 6618532 | Optical transmission line | Shigeru Tanaka, Masayuki Nishimura, Shinji Ishikawa, Takatoshi Kato | 2003-09-09 |
| 6606440 | Microstructured optical fiber | Takemi Hasegawa, Masayuki Nishimura | 2003-08-12 |
| 6597846 | Optical fiber | Takashi Fujii, Toshifumi Hosoya, Kenji Tamano, Keiichiro Fukuda, Shigeru Tanaka +1 more | 2003-07-22 |
| 6574404 | Choromatic dispersion compensating module and optical transmission system using the same | Masao Tsukitani, Shigeru Tanaka | 2003-06-03 |
| 6571045 | Microstructured optical fiber | Takemi Hasegawa, Masayuki Nishimura | 2003-05-27 |
| 6567597 | Optical fiber, method of making the same, and optical transmission system including the same | Masashi Onishi, Katsuya Nagayama, Kaoru Okuno, Kazuya Kuwahara | 2003-05-20 |
| 6556755 | Dispersion-equalizing optical fiber and optical transmission line including the same | Masao Tsukitani, Shigeru Tanaka | 2003-04-29 |
| 6546180 | Coiled optical assembly and fabricating method for the same | Yasushi Koyano, Shigeru Tanaka, Kohei Kobayashi, Masashi Onishi | 2003-04-08 |
| 6535677 | Dispersion-managed optical fiber, method of manufacturing the same, optical communication system including the same and optical fiber preform therefor | Shigeru Tanaka, Masayuki Nishimura, Shinji Ishikawa, Takatoshi Kato | 2003-03-18 |
| 6532331 | Single-mode optical fiber floor long haul transmission | Takatoshi Kato, Masashi Onishi | 2003-03-11 |
| 6526209 | Optical fiber having improved optics and structure | Takemi Hasegawa, Masayuki Nishimura, Masashi Onishi | 2003-02-25 |
| 6498874 | Optical transmission line | Takatoshi Kato, Masayuki Nishimura | 2002-12-24 |
| 6496631 | Optical transmission line and optical transmission system including the same | Masao Tsukitani | 2002-12-17 |
| 6487353 | Dispersion-shifted optical fiber | Takatoshi Kato, Masayuki Nishimura | 2002-11-26 |
| 6473548 | Multiple fiber optical cable and method of manufacturing multiple fiber optical cable | Katsuya Nagayama, Kaoru Okuno, Masayuki Nishimura | 2002-10-29 |