Inventor · disambiguated record
Masaharu Doi
Also filed as: DOI MASAHARU
66 granted patents·6 pending applications·611 citations·filing 1991–2022
99Inventor score
Top patents by PatentIndex Score
72 records- 0197US11086149B2Electro-optic deviceTDK CORP·Filed 2020·Granted Aug 10, 2021·10 cites·5 claims
- 0296US11003044B2Electro-optic deviceTDK CORP·Filed 2020·Granted May 11, 2021·5 cites·16 claims
- 0395US11693290B2Optical waveguide deviceFUJITSU OPTICAL COMPONENTS LTD·Filed 2021·Granted Jul 4, 2023·4 cites·13 claims
- 0495US10989980B2Optical modulatorTDK CORP·Filed 2020·Granted Apr 27, 2021·5 cites·9 claims
- 0594US10754179B2Optical modulator, optical modulator module, and optical transmitter moduleFUJITSU OPTICAL COMPONENTS LTD·Filed 2019·Granted Aug 25, 2020·8 cites·15 claims
- 0693US11624965B2Optical waveguide deviceFUJITSU OPTICAL COMPONENTS LTD·Filed 2021·Granted Apr 11, 2023·3 cites·20 claims
- 0793US7263244B2Optical modulatorFUJITSU LTD·Filed 2005·Granted Aug 28, 2007·19 cites·7 claims
- 0892US7526161B2Optical deviceFUJITSU LTD·Filed 2007·Granted Apr 28, 2009·14 cites·13 claims
- 0992US7058241B2Optical modulatorFUJITSU LTD·Filed 2005·Granted Jun 6, 2006·18 cites·20 claims
- 1091USD495775SWashing machine with a clothing drierTOSHIBA KK·Filed 2003·Granted Sep 7, 2004·49 cites·1 claims
- 1189US6584240B2Optical modulator having ridge and associated structure on substrateFUJITSU LTD·Filed 2001·Granted Jun 24, 2003·37 cites·43 claims
- 1289US6580843B2Optical deviceFUJITSU LTD·Filed 2001·Granted Jun 17, 2003·38 cites·59 claims
- 1388US5404412AOptical waveguide deviceFUJITSU LTD·Filed 1992·Granted Apr 4, 1995·80 cites·8 claims
- 1486US7155072B2Optical modulatorFUJITSU LTD·Filed 2005·Granted Dec 26, 2006·10 cites·25 claims
- 1585US8805127B2Optical waveguide device, manufacturing method therefor, optical modulator, polarization mode dispersion compensator, and optical switchFUJITSU LTD·Filed 2013·Granted Aug 12, 2014·3 cites·3 claims
- 1685US7079732B2Optical deviceFUJITSU LTD·Filed 2005·Granted Jul 18, 2006·9 cites·26 claims
- 1782US7729580B2Waveguide type optical device and manufacturing method of the waveguide type optical deviceFUJITSU LTD·Filed 2006·Granted Jun 1, 2010·12 cites·7 claims
- 1882US6678428B2Optical modulatorFUJITSU LTD·Filed 2001·Granted Jan 13, 2004·22 cites·53 claims
- 1980US10175553B2Optical moduleFUJITSU OPTICAL COMPONENTS LTD·Filed 2016·Granted Jan 8, 2019·4 cites·8 claims
- 2079US11003043B2Optical modulatorFUJITSU OPTICAL COMPONENTS LTD·Filed 2020·Granted May 11, 2021·1 cites·14 claims
- 2179US7627200B2Optical deviceFUJITSU LTD·Filed 2006·Granted Dec 1, 2009·5 cites·24 claims
- 2278US7787717B2Optical waveguide deviceFUJITSU LTD·Filed 2008·Granted Aug 31, 2010·4 cites·9 claims
- 2378US7095559B2Variable optical delay circuitFUJITSU LTD·Filed 2005·Granted Aug 22, 2006·5 cites·10 claims
- 2478US5680497AOptical waveguide deviceFUJITSU LTD·Filed 1994·Granted Oct 21, 1997·43 cites·13 claims
- 2578US5214724AOptical waveguide device with suppressed dc driftFUJITSU LTD·Filed 1991·Granted May 25, 1993·51 cites·13 claims
- 2676US8582928B2Optical waveguide device, manufacturing method therefor, optical modulator, polarization mode dispersion compensator, and optical switchMIYATAKE TETSUYA·Filed 2010·Granted Nov 12, 2013·3 cites·18 claims
- 2776US7340114B2Optical waveguide device and optical modulatorFUJITSU LTD·Filed 2003·Granted Mar 4, 2008·17 cites·28 claims
- 2875US10054744B2Optical module and optical fiber assemblyFUJITSU OPTICAL COMPONENTS LTD·Filed 2016·Granted Aug 21, 2018·2 cites·18 claims
- 2975US7941011B2Multilevel light intensity modulatorFUJITSU LTD·Filed 2009·Granted May 10, 2011·4 cites·13 claims
- 3075US7519241B2Optical deviceFUJITSU LTD·Filed 2007·Granted Apr 14, 2009·4 cites·11 claims
- 3175US6801675B2Optical modulatorFUJITSU LTD·Filed 2003·Granted Oct 5, 2004·13 cites·43 claims
- 3274US7386198B2Optical waveguide deviceFUJITSU LTD·Filed 2005·Granted Jun 10, 2008·3 cites·10 claims
- 3374US7280713B2Optical modulator, optical waveguide device and acousto-optic tunable filter apparatusFUJITSU LTD·Filed 2006·Granted Oct 9, 2007·3 cites·22 claims
- 3473US6741378B2Optical modulator having element for varying optical phase by electrooptic effectFUJITSU LTD·Filed 2002·Granted May 25, 2004·14 cites·9 claims
- 3571US7551820B2Optical deviceFUJITSU LTD·Filed 2008·Granted Jun 23, 2009·4 cites·3 claims
- 3671US6917732B2Connecting method of optical function devices, and optical apparatusFUJITSU LTD·Filed 2004·Granted Jul 12, 2005·12 cites·8 claims
- 3771US6594407B2Optical modulator of clock modulation typeFUJITSU LTD·Filed 2001·Granted Jul 15, 2003·11 cites·24 claims
- 3868US8774567B2Polarization multiplexing modulatorDOI MASAHARU·Filed 2012·Granted Jul 8, 2014·1 cites·2 claims
- 3968US7315676B2Optical modulator, optical waveguide device and acousto-optic tunable filter apparatusFUJITSU LTD·Filed 2006·Granted Jan 1, 2008·2 cites·26 claims
- 4066US6865306B2Optical deviceFUJITSU LTD·Filed 2003·Granted Mar 8, 2005·8 cites·18 claims
- 4165US7133578B2Optical modulator with an impedance matching regionFUJITSU LTD·Filed 2004·Granted Nov 7, 2006·9 cites·12 claims
- 4265USD491204SRefrigeratorTOSHIBA KK·Filed 2003·Granted Jun 8, 2004·14 cites·1 claims
- 4363US8280200B2Polarization conversion device and polarization multiplexing modulatorDOI MASAHARU·Filed 2009·Granted Oct 2, 2012·3 cites·10 claims
- 4463US7113677B2Optical modulator, optical waveguide device and acousto-optic tunable filter apparatusFUJITSU LTD·Filed 2003·Granted Sep 26, 2006·6 cites·33 claims
- 4561US11693291B2Optical waveguide device and method of manufacturing optical waveguide deviceFUJITSU OPTICAL COMPONENTS LTD·Filed 2021·Granted Jul 4, 2023·0 cites·1 claims
- 4661US6999223B2Optical modulatorFUJITSU LTD·Filed 2003·Granted Feb 14, 2006·6 cites·6 claims
- 4759US6950218B2Optical modulatorFUJITSU LTD·Filed 2004·Granted Sep 27, 2005·6 cites·11 claims
- 4856US12197054B2Optical device and optical communication apparatusFUJITSU OPTICAL COMPONENTS LTD·Filed 2022·Granted Jan 14, 2025·0 cites·8 claims
- 4956US2017017097A1Optical modulator that includes optical waveguide formed in ferroelectric substrateFUJITSU OPTICAL COMPONENTS LTD·Filed 2016·Application pending·0 cites
- 5055US10303036B2Optical modulatorFUJITSU OPTICAL COMPONENTS LTD·Filed 2017·Granted May 28, 2019·0 cites·3 claims
Showing the top 50 of 72 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →