Issued Patents All Time
Showing 1–25 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7539383 | Buffered optical fiber and manufacturing method thereof | Akira Sendai, Yukio Ishii, Tomoaki Gonohe | 2009-05-26 |
| 7362940 | Optical-fiber coating apparatus | Minsuk Song, Toshiaki Tateishi | 2008-04-22 |
| 7263264 | Method of manufacturing optical waveguide | Masato Oku, Akira Iino | 2007-08-28 |
| 7146079 | Dynamic gain equalizer | Kazutaka Nara, Noritaka Matsubara | 2006-12-05 |
| 7133587 | Dispersion compensator, method for manufacturing the same, and method for compensating wavelength dispersion | Kazutaka Nara | 2006-11-07 |
| 7072545 | Dispersion compensator, method for manufacturing the same, and method for compensating wavelength dispersion | Kazutaka Nara | 2006-07-04 |
| 6920265 | Arrayed waveguide grating type optical multiplexer/demultiplexer | Kazutaka Nara | 2005-07-19 |
| 6836591 | Arrayed waveguide grating type optical multiplexer/demultiplexer and optical waveguide circuit | Kazutaka Nara | 2004-12-28 |
| 6830384 | Optical fiber module | Junichi Hasegawa, Tsunetoshi Saito, Kanji Tanaka | 2004-12-14 |
| 6829418 | Optical waveguide circuit device | Yoshinobu Nekado, Kazutaka Nara, Tunetoshi Saito | 2004-12-07 |
| 6826332 | Arrayed waveguide grating and its method for correcting center wavelength | Tsunetoshi Saito, Kanji Tanaka, Junichi Hasegawa, Yoshinobu Nekado, Yoshimi Ono | 2004-11-30 |
| 6816651 | Arrayed waveguide grating optical multiplexer/demultiplexer and method for manufacturing the same | Kazutaka Nara | 2004-11-09 |
| 6804430 | Optical multiplexer/demultiplexer | Isao Ooyama, Hiroyuki Koshi, Takuya Komatsu | 2004-10-12 |
| 6769817 | Optical fiber module | Tsunetoshi Saito, Junichi Hasegawa, Kanji Tanaka | 2004-08-03 |
| 6768832 | Arrayed waveguide grating optical multiplexer/demultiplexer and method for manufacturing the same | Takeshi Nakajima, Kazutaka Nara | 2004-07-27 |
| 6763164 | Method for manufacturing a planar lightwave circuit, and planar waveguide circuit | Kazutaka Nara, Yoshinobu Nekado | 2004-07-13 |
| 6757453 | Optical waveguide module | Yoshinobu Nekado, Tsunetoshi Saito | 2004-06-29 |
| 6735364 | Arrayed waveguide grating optical multiplexer/demultiplexer and method for manufacturing the same | Kazutaka Nara, Kanji Tanaka | 2004-05-11 |
| 6728447 | Optical multiplexer/demultiplexer | Hiroyuki Koshi | 2004-04-27 |
| 6728435 | Arrayed waveguide grating type optical multiplexer/demultiplexer and optical waveguide circuit | Kazutaka Nara | 2004-04-27 |
| 6671433 | Arrayed waveguide grating type optical multiplexer/demultiplexer | Kazutaka Nara | 2003-12-30 |
| 6668116 | Arrayed waveguide grating type optical multiplexer/demultiplexer | Kazutaka Nara, Yoshinobu Nekado, Tunetoshi Saito | 2003-12-23 |
| 6591044 | Optical waveguide circuit module | Kazutaka Nara, Tunetoshi Saito, Takeshi Nakajima | 2003-07-08 |
| 6584270 | Fixed component and optical component employing the same | Kanji Tanaka, Yoshinobu Nekado | 2003-06-24 |
| 6567587 | Dispersion compensator and dispersion-compensating module employing the same | Kazutaka Nara, Kanji Tanaka | 2003-05-20 |