Inventor · disambiguated record
Tadao Nakazawa
Also filed as: NAKAZAWA TADAO · OIKAWA YOICHI · SUGIYAMA MASAKI · TSUNODA YUKITO
41 granted patents·1 pending application·618 citations·filing 1991–2007
98Inventor score
Files withFUJITSU LTD42
Top patents by PatentIndex Score
42 records- 0193US7362925B2Control method and control apparatus of optical deviceFUJITSU LTD·Filed 2005·Granted Apr 22, 2008·18 cites·2 claims
- 0292US6351323B1Optical transmission apparatus, optical transmission system, and optical terminal stationFUJITSU LTD·Filed 1998·Granted Feb 26, 2002·87 cites·28 claims
- 0391US6847662B2Wavelength-selectable laser capable of high-speed frequency controlFUJITSU LTD·Filed 2003·Granted Jan 25, 2005·38 cites·35 claims
- 0490US6583900B2Optical transmission apparatus, optical transmission system, and optical terminal stationFUJITSU LTD·Filed 2001·Granted Jun 24, 2003·27 cites·26 claims
- 0588US5404412AOptical waveguide deviceFUJITSU LTD·Filed 1992·Granted Apr 4, 1995·80 cites·8 claims
- 0686US7155072B2Optical modulatorFUJITSU LTD·Filed 2005·Granted Dec 26, 2006·10 cites·25 claims
- 0783US7177490B2Optical waveguide, optical device, and method of manufacturing optical waveguideFUJITSU LTD·Filed 2006·Granted Feb 13, 2007·10 cites·22 claims
- 0883US6721085B2Optical modulator and design method thereforFUJITSU LTD·Filed 2002·Granted Apr 13, 2004·20 cites·83 claims
- 0982US7088875B2Optical modulatorFUJITSU LTD·Filed 2004·Granted Aug 8, 2006·25 cites·29 claims
- 1082US6678428B2Optical modulatorFUJITSU LTD·Filed 2001·Granted Jan 13, 2004·22 cites·53 claims
- 1181US6643060B2Multi-wavelength light source utilizing acousto-optic tunable filterFUJITSU LTD·Filed 2001·Granted Nov 4, 2003·17 cites·16 claims
- 1279US6934433B2Control method and control apparatus of optical deviceFUJITSU LTD·Filed 2002·Granted Aug 23, 2005·17 cites·38 claims
- 1378US7095559B2Variable optical delay circuitFUJITSU LTD·Filed 2005·Granted Aug 22, 2006·5 cites·10 claims
- 1478US5680497AOptical waveguide deviceFUJITSU LTD·Filed 1994·Granted Oct 21, 1997·43 cites·13 claims
- 1578US5214724AOptical waveguide device with suppressed dc driftFUJITSU LTD·Filed 1991·Granted May 25, 1993·51 cites·13 claims
- 1677US6867901B2Optical modulator and design method thereforFUJITSU LTD·Filed 2003·Granted Mar 15, 2005·14 cites·14 claims
- 1776US7340114B2Optical waveguide device and optical modulatorFUJITSU LTD·Filed 2003·Granted Mar 4, 2008·17 cites·28 claims
- 1873US6741378B2Optical modulator having element for varying optical phase by electrooptic effectFUJITSU LTD·Filed 2002·Granted May 25, 2004·14 cites·9 claims
- 1971US6917732B2Connecting method of optical function devices, and optical apparatusFUJITSU LTD·Filed 2004·Granted Jul 12, 2005·12 cites·8 claims
- 2070US7054512B2Optical waveguide, optical device, and method of manufacturing optical waveguideFUJITSU LTD·Filed 2004·Granted May 30, 2006·10 cites·6 claims
- 2167US6594069B1Control method and control apparatus of optical wavelength variable filterFUJITSU LTD·Filed 2002·Granted Jul 15, 2003·7 cites·7 claims
- 2262US7430344B2Acousto-optic device and fabrication method of acousto-optic deviceFUJITSU LTD·Filed 2007·Granted Sep 30, 2008·1 cites·10 claims
- 2361US6999223B2Optical modulatorFUJITSU LTD·Filed 2003·Granted Feb 14, 2006·6 cites·6 claims
- 2461US6697543B2Optical waveguide filterFUJITSU LTD·Filed 2001·Granted Feb 24, 2004·7 cites·14 claims
- 2560US6701031B2Acousto-optical tunable filter, method of driving the same, and optical add/drop multiplexerFUJITSU LTD·Filed 2001·Granted Mar 2, 2004·4 cites·29 claims
- 2660US6549328B2Acousto-optic tunable filterFUJITSU LTD·Filed 2002·Granted Apr 15, 2003·7 cites·14 claims
- 2759US6950218B2Optical modulatorFUJITSU LTD·Filed 2004·Granted Sep 27, 2005·6 cites·11 claims
- 2855US7239764B2Optical waveguide device with reduced driving voltageFUJITSU LTD·Filed 2002·Granted Jul 3, 2007·5 cites·16 claims
- 2955US6768570B2Optical modulatorFUJITSU LTD·Filed 2003·Granted Jul 27, 2004·4 cites·5 claims
- 3054US6728487B2Drive method for a plurality of acousto-optic filters, acousto-optic filter apparatus, and selective wavelength extension methodFUJITSU LTD·Filed 2001·Granted Apr 27, 2004·2 cites·14 claims
- 3153US7151866B2Optical device moduleFUJITSU LTD·Filed 2004·Granted Dec 19, 2006·4 cites·20 claims
- 3251US7476038B2Optical device moduleFUJITSU LTD·Filed 2004·Granted Jan 13, 2009·3 cites·24 claims
- 3351US6870972B2Connecting method of optical devices, and optical apparatusFUJITSU LTD·Filed 2002·Granted Mar 22, 2005·3 cites·42 claims
- 3447US6400881B1Optical device having thin film formed over optical waveguideFUJITSU LTD·Filed 1998·Granted Jun 4, 2002·14 cites·67 claims
- 3543US7302121B2Optical device and drive voltage supply deviceFUJITSU LTD·Filed 2005·Granted Nov 27, 2007·0 cites·16 claims
- 3641US6925214B2Connecting method of optical function devices, and optical apparatusFUJITSU LTD·Filed 2002·Granted Aug 2, 2005·0 cites·16 claims
- 3740US7218797B2Acousto-optic device and fabrication method of acousto-optic deviceFUJITSU LTD·Filed 2004·Granted May 15, 2007·0 cites·13 claims
- 3838US6873748B2Optical modulator module and optical modulatorFUJITSU LTD·Filed 2002·Granted Mar 29, 2005·0 cites·48 claims
- 3938US6783282B2Optical wavelength filterFUJITSU LTD·Filed 2002·Granted Aug 31, 2004·0 cites·31 claims
- 4038US2006002436A1Wavelength tunable laser and method of controlling the sameFUJITSU LTD·Filed 2004·Application pending·0 cites
- 4134US7116907B1Acousto-optical tunable filters cascaded togetherFUJITSU LTD·Filed 1999·Granted Oct 3, 2006·4 cites·89 claims
- 4234US6370308B1Acousto-optical deviceFUJITSU LTD·Filed 1998·Granted Apr 9, 2002·4 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →