Inventor · disambiguated record
Yuichi Kawahata
Also filed as: KAWAHATA YUICHI
11 granted patents·4 pending applications·98 citations·filing 2001–2008
89Inventor score
Files withFUJITSU LTD15
Top patents by PatentIndex Score
15 records- 0189US6646805B2Apparatus for variable wavelength dispersion and wavelength dispersion slopeFUJITSU LTD·Filed 2001·Granted Nov 11, 2003·47 cites·20 claims
- 0273US7343094B2Transmission characteristics evaluation system and pseudo transmission path apparatus thereofFUJITSU LTD·Filed 2005·Granted Mar 11, 2008·6 cites·20 claims
- 0372US7302189B2Optical component provided with demultiplexing function and wavelength dispersion compensatorFUJITSU LTD·Filed 2004·Granted Nov 27, 2007·15 cites·10 claims
- 0462US7418206B2Control method of wavelength dispersion compensator, and wavelength dispersion compensatorFUJITSU LTD·Filed 2004·Granted Aug 26, 2008·8 cites·14 claims
- 0559US6909537B2Dispersion compensator whose transmission band is flattenedFUJITSU LTD·Filed 2003·Granted Jun 21, 2005·6 cites·14 claims
- 0658US6900940B2Optical apparatus and deviceFUJITSU LTD·Filed 2002·Granted May 31, 2005·6 cites·18 claims
- 0750US7073915B2Mirror fixing method and optical apparatusFUJITSU LTD·Filed 2003·Granted Jul 11, 2006·3 cites·17 claims
- 0847US7357521B2Chromatic dispersion compensation device and methodFUJITSU LTD·Filed 2004·Granted Apr 15, 2008·2 cites·12 claims
- 0947US7200297B2Device using a virtually-imaged phased array (VIPA) with an improved transmission wave characteristic of output lightFUJITSU LTD·Filed 2002·Granted Apr 3, 2007·2 cites·14 claims
- 1047US7019901B2Wavelength periodical filterFUJITSU LTD·Filed 2002·Granted Mar 28, 2006·2 cites·10 claims
- 1146US2008304157A1Chromatic dispersion compensation device and methodFUJITSU LTD·Filed 2008·Application pending·0 cites
- 1243US6894851B2Optical deviceFUJITSU LTD·Filed 2003·Granted May 17, 2005·1 cites·9 claims
- 1341US2006007427A1Optical transmission apparatus, method for controlling optical transmission system, and optical relay node equipped with wavelength control functionFUJITSU LTD·Filed 2004·Application pending·0 cites
- 1439US2004179279A1Wavelength dispersion compensator and optical transmission apparatusFUJITSU LTD·Filed 2004·Application pending·0 cites
- 1536US2004057115A1Optical deviceFUJITSU LTD·Filed 2003·Application pending·0 cites
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