Issued Patents All Time
Showing 51–75 of 107 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6567595 | Optical fiber line, optical transmission line, method of making optical cable, and method of laying optical transmission line | — | 2003-05-20 |
| 6560381 | Optical filter | Hitoshi Hatayama, Chisai Hirose | 2003-05-06 |
| RE38086 | Dispersion compensating fiber and optical transmission system including the same | Masashi Onishi, Hiroo Kanamori, Tomonori Kashiwada, Yasushi Koyano | 2003-04-22 |
| 6535677 | Dispersion-managed optical fiber, method of manufacturing the same, optical communication system including the same and optical fiber preform therefor | Shigeru Tanaka, Shinji Ishikawa, Eisuke Sasaoka, Takatoshi Kato | 2003-03-18 |
| 6526209 | Optical fiber having improved optics and structure | Takemi Hasegawa, Eisuke Sasaoka, Masashi Onishi | 2003-02-25 |
| 6512613 | WDM transmission repeater, WDM transmission system and WDM transmission method | Shigeru Tanaka, Masayuki Shigematsu, Yasunori Murakami | 2003-01-28 |
| 6507680 | Planar lightwave circuit module | Hitoshi Hatayama, Nobuhiro Akasaka | 2003-01-14 |
| 6498874 | Optical transmission line | Takatoshi Kato, Eisuke Sasaoka | 2002-12-24 |
| 6487353 | Dispersion-shifted optical fiber | Takatoshi Kato, Eisuke Sasaoka | 2002-11-26 |
| 6483970 | Fiber optic cable and optical transmission system | Takatoshi Kato | 2002-11-19 |
| 6480312 | Dispersion compensating system used for bi-directional optical communication | Toshiaki Okuno, Masashi Onishi | 2002-11-12 |
| 6473546 | Optical multiplexer/demultiplexer | Makoto Katayama, Shigeru Tanaka | 2002-10-29 |
| 6473548 | Multiple fiber optical cable and method of manufacturing multiple fiber optical cable | Katsuya Nagayama, Kaoru Okuno, Eisuke Sasaoka | 2002-10-29 |
| 6424760 | Optical multiplexer/demultiplexer | Makoto Katayama, Shigeru Tanaka | 2002-07-23 |
| 6421484 | Optical fiber transmission line and optical cable including the same | Shigeru Tanaka, Hiroshi Ishisaki | 2002-07-16 |
| 6347174 | Non-linear optical fiber, optical fiber coil, and wavelength converter | Masashi Onishi, Toshiaki Okuno, Shinji Ishikawa, Tomonori Kashiwada | 2002-02-12 |
| 6339325 | Apparatus for detecting gear positions of automobile transmission | Katsushi Oda | 2002-01-15 |
| 6323642 | Detector for determining rotational speed and position for an internal combustion engine | Tsuyoshi Yamaguchi, Koji Hiragi, Shinichi Maruo, Mitsuhiro Izumi | 2001-11-27 |
| 6282361 | Multi-channel variable optical attenuator | Koji Nakazato | 2001-08-28 |
| 6259554 | Optical amplifier repeater system | Masayuki Shigematsu | 2001-07-10 |
| 6256440 | Dispersion-shifted optical fiber | Takatoshi Kato, Eisuke Sasaoka | 2001-07-03 |
| 6169837 | Dispersion-flattened optical fiber | Takatoshi Kato, Hitoshi Hatayama, Eisuke Sasaoka | 2001-01-02 |
| 6144784 | Optical input/output module and light-reflecting device | Masakazu Shigehara, Shinji Ishikawa, Motoki Kakui, Hiroo Kanamori | 2000-11-07 |
| 6131014 | Bidirectional communication system and upstream communication noise level determination method | — | 2000-10-10 |
| 6023599 | Positioning mechanism for developing unit in image forming apparatus | Satoshi Matsuzaka, Takeshi Okoshi | 2000-02-08 |