Issued Patents 2003
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659614 | Variable dispersion compensator and optical transmission system | Makoto Katayama, Tomohiko Kanie, Shunichi Tsuchiya | 2003-12-09 |
| 6643431 | Optical device and control method thereof | Hitoshi Hatayama, Chisai Hirose, Makoto Katayama | 2003-11-04 |
| 6636677 | Optical fiber | Takemi Hasegawa, Eisuke Sasaoka, Masashi Onishi | 2003-10-21 |
| 6633698 | Optical filter | Hitoshi Hatayama | 2003-10-14 |
| 6618532 | Optical transmission line | Eisuke Sasaoka, Shigeru Tanaka, Shinji Ishikawa, Takatoshi Kato | 2003-09-09 |
| 6606440 | Microstructured optical fiber | Takemi Hasegawa, Eisuke Sasaoka | 2003-08-12 |
| 6574397 | Optical multiplexer/demultiplexer | Makoto Katayama, Shigeru Tanaka | 2003-06-03 |
| 6571045 | Microstructured optical fiber | Takemi Hasegawa, Eisuke Sasaoka | 2003-05-27 |
| 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 |