Inventor · disambiguated record
Yoichi Oikawa
Also filed as: NAKAZAWA LEGAL REPRESENTATIVE · NAKAZAWA LEGAL REPRESENTATIVE YUMI · OIKAWA YOICHI
29 granted patents·7 pending applications·379 citations·filing 1992–2021
96Inventor score
Files withFUJITSU LTD28THINK LANDS CO LTD3MURE MASAHITO1NATIONAL UNIV CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM1THINK LADS CO LTD1
Top patents by PatentIndex Score
36 records- 0193US7440648B2Wavelength selective switchFUJITSU LTD·Filed 2005·Granted Oct 21, 2008·40 cites·13 claims
- 0290US6810215B1Optical repeater converting wavelength and bit rate between networksFUJITSU LTD·Filed 2000·Granted Oct 26, 2004·40 cites·7 claims
- 0387US5386488AOptical module and manufacturing method thereforFUJITSU LTD·Filed 1992·Granted Jan 31, 1995·75 cites·20 claims
- 0483US7831118B2Coarse wavelength division multiplexing optical transmission system, and coarse wavelength division multiplexing optical transmission methodFUJITSU LTD·Filed 2005·Granted Nov 9, 2010·11 cites·17 claims
- 0580US5293087AFilter circuit and filter integrated circuitFUJITSU LTD·Filed 1992·Granted Mar 8, 1994·28 cites·4 claims
- 0673US5999289ADetection of, and compensation for, waveform change due to chromatic dispersionFUJITSU LTD·Filed 1998·Granted Dec 7, 1999·47 cites·12 claims
- 0772US8670665B2Optical apparatus using polarized orthogonal controlTOYOMAKI TAKASHI·Filed 2007·Granted Mar 11, 2014·5 cites·5 claims
- 0871US7522843B2Optical repeater converting wavelength and bit rate between networksFUJITSU LTD·Filed 2008·Granted Apr 21, 2009·3 cites·6 claims
- 0969US6074102AOptical device capable of operating at high speedsFUJITSU LTD·Filed 1998·Granted Jun 13, 2000·37 cites·12 claims
- 1064US8180226B2Optical receiverMURE MASAHITO·Filed 2010·Granted May 15, 2012·3 cites·2 claims
- 1163US6907154B2Optical switch having switch cells with movable switch mirrorsFUJITSU LTD·Filed 2001·Granted Jun 14, 2005·6 cites·10 claims
- 1261US6999648B2Optical cross-connect apparatusFUJITSU LTD·Filed 2004·Granted Feb 14, 2006·4 cites·13 claims
- 1361US6813410B2Optical switch for compensating for degradation of optical-coupling characteristicFUJITSU LTD·Filed 2001·Granted Nov 2, 2004·7 cites·9 claims
- 1460US6252698B1Method and device for wavelength conversion, and system including the deviceFUJITSU LTD·Filed 1999·Granted Jun 26, 2001·26 cites·18 claims
- 1558US7269314B2Dispersion compensation deviceFUJITSU LTD·Filed 2005·Granted Sep 11, 2007·2 cites·26 claims
- 1658US6819828B2Method and device for optical fiber transmissionFUJITSU LTD·Filed 2001·Granted Nov 16, 2004·6 cites·32 claims
- 1757US5506542AFilter circuit and filter integrated circuitFUJITSU LTD·Filed 1993·Granted Apr 9, 1996·11 cites·23 claims
- 1856US6748130B2Optical switch and using method thereforFUJITSU LTD·Filed 2003·Granted Jun 8, 2004·4 cites·10 claims
- 1954US7424227B2Optical repeater converting wavelength and bit rate between networksFUJITSU LTD·Filed 2004·Granted Sep 9, 2008·2 cites·8 claims
- 2053US7151866B2Optical device moduleFUJITSU LTD·Filed 2004·Granted Dec 19, 2006·4 cites·20 claims
- 2151US7476038B2Optical device moduleFUJITSU LTD·Filed 2004·Granted Jan 13, 2009·3 cites·24 claims
- 2249US7379636B2Optical switchFUJITSU LTD·Filed 2006·Granted May 27, 2008·0 cites·2 claims
- 2347US7443503B2Polarization measuring apparatusFUJITSU LTD·Filed 2004·Granted Oct 28, 2008·2 cites·14 claims
- 2447US7206476B2Optical switchFUJITSU LTD·Filed 2005·Granted Apr 17, 2007·0 cites·32 claims
- 2547US6901179B2Optical switch and using method thereforFUJITSU LTD·Filed 2004·Granted May 31, 2005·1 cites·6 claims
- 2646US8054524B2Optical amplifierTRIMATIZ LTD·Filed 2008·Granted Nov 8, 2011·0 cites·15 claims
- 2744US7486857B2Temperature-independent optical wavelength identification apparatus and optical wavelength identification methodFUJITSU LTD·Filed 2007·Granted Feb 3, 2009·0 cites·13 claims
- 2844US7106927B2Optical cross-connect apparatusFUJITSU LTD·Filed 2004·Granted Sep 12, 2006·0 cites·5 claims
- 2944US2008317403A1Optical deviceFUJITSU LTD·Filed 2008·Application pending·0 cites
- 3044US2008316584A1Optical deviceFUJITSU LTD·Filed 2008·Application pending·0 cites
- 3142US5324954ASystems for adjusting and evaluating positional relationship between light-receiving element and optical fiberFUJITSU LTD·Filed 1993·Granted Jun 28, 1994·12 cites·15 claims
- 3235US2021373061A1Electromagnetic wave measurement probe, electromagnetic wave measurement system, and bundled optical fiberNATIONAL UNIV CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM·Filed 2019·Application pending·0 cites
- 3331US2019134367A1Microneedle manufacturing method and microneedle manufacturing deviceTHINK LANDS CO LTD·Filed 2017·Application pending·0 cites
- 3430US2021263089A1Electromagnetic wave measurement probe, electromagnetic wave measurement system, and bundled optical fiberTHINK LANDS CO LTD·Filed 2021·Application pending·0 cites
- 3529US2021100994A1Microneedle production methodTHINK LADS CO LTD·Filed 2018·Application pending·0 cites
- 3627US2019209821A1Laser beam machining method and microneedle fabrication methodTHINK LANDS CO LTD·Filed 2017·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →