Inventor · disambiguated record
Masashige Ishizaka
Also filed as: ISHIZAKA MASASHIGE
29 granted patents·273 citations·filing 1995–2016
96Inventor score
Files withNEC CORP16FUJITSU LTD10ISHIZAKA MASASHIGE1NAT INST OF ADVANCED IND SCIEN1TAKAHASHI SHIGEKI1
Top patents by PatentIndex Score
29 records- 0195US9195001B2Spot size converter, optical transmitter, optical receiver, optical transceiver, and method of manufacturing spot size converterFUJITSU LTD·Filed 2012·Granted Nov 24, 2015·29 cites·11 claims
- 0295US9128240B2Spot-size converter, manufacturing method thereof, and integrated optical circuit deviceFUJITSU LTD·Filed 2014·Granted Sep 8, 2015·25 cites·12 claims
- 0391US9151894B2Light source circuit and light source device equipped with sameNAT INST OF ADVANCED IND SCIEN·Filed 2013·Granted Oct 6, 2015·14 cites·30 claims
- 0490US9904011B2Optical waveguide, optical interposer and light sourceFUJITSU LTD·Filed 2014·Granted Feb 27, 2018·12 cites·20 claims
- 0581US9964704B2Spot size converter, light source, optical transmitter, optical receiver and optical transmitter-receiverFUJITSU LTD·Filed 2014·Granted May 8, 2018·5 cites·10 claims
- 0681US8126301B2Optical waveguide and method for producing the sameISHIZAKA MASASHIGE·Filed 2008·Granted Feb 28, 2012·14 cites·14 claims
- 0780US9612411B2Semiconductor optical waveguide device with an anti-reflection diffraction grating formed on both lateral sides of a core layer along a direction of optical propagationFUJITSU LTD·Filed 2015·Granted Apr 4, 2017·3 cites·8 claims
- 0880US7616843B2Optical functional device and fabrication process of the sameNEC CORP·Filed 2006·Granted Nov 10, 2009·6 cites·14 claims
- 0977US9628190B2Optical transmitter and optical communication deviceNEC CORP·Filed 2013·Granted Apr 18, 2017·4 cites·19 claims
- 1077US6426236B1Method for making semiconductor optical modulatorNEC CORP·Filed 2000·Granted Jul 30, 2002·16 cites·2 claims
- 1176US9729246B2Manufacturing method for a phase modulation system with ultraviolet discharge of accumulated chargesNEC CORP·Filed 2013·Granted Aug 8, 2017·2 cites·16 claims
- 1275US6477311B2Method and device for selecting light source for optical communicationNEC CORP·Filed 2001·Granted Nov 5, 2002·15 cites·6 claims
- 1374US9297956B2Optical device, optical transmitter, optical receiver, optical transceiver, and method of manufacturing optical deviceFUJITSU LTD·Filed 2013·Granted Mar 29, 2016·3 cites·12 claims
- 1473US6646775B2Light source for integrating modulator and module for optical communicationNEC CORP·Filed 2001·Granted Nov 11, 2003·11 cites·8 claims
- 1572US9151892B2Spot size converter and method for making the sameTAKAHASHI SHIGEKI·Filed 2012·Granted Oct 6, 2015·3 cites·10 claims
- 1670US6150667ASemiconductor optical modulatorNEC CORP·Filed 1997·Granted Nov 21, 2000·36 cites·12 claims
- 1768US9871347B2Semiconductor light emitting device and optical transceiverFUJITSU LTD·Filed 2016·Granted Jan 16, 2018·1 cites·13 claims
- 1866US8379300B2Wavelength-variable light source with dual resonator loop circuitNEC CORP·Filed 2009·Granted Feb 19, 2013·2 cites·12 claims
- 1964US9429706B2Optical waveguide coupler and method for manufacturing sameFUJITSU LTD·Filed 2015·Granted Aug 30, 2016·1 cites·12 claims
- 2061US7546005B2Optical switch and path switching methodNEC CORP·Filed 2005·Granted Jun 9, 2009·1 cites·17 claims
- 2152US9664981B2Integrated light source and light output control methodNEC CORP·Filed 2014·Granted May 30, 2017·0 cites·20 claims
- 2252US5757985ASemiconductor mach-zehnder-type optical modulatorNEC CORP·Filed 1995·Granted May 26, 1998·19 cites·12 claims
- 2348US9130352B2Optical semiconductor device, light emitting device, optical transmitting device, and method of manufacturing optical semiconductor deviceFUJITSU LTD·Filed 2013·Granted Sep 8, 2015·0 cites·15 claims
- 2447US9235000B2Optical semiconductor apparatusFUJITSU LTD·Filed 2014·Granted Jan 12, 2016·0 cites·12 claims
- 2546US6318906B1Optical communication moduleNEC CORP·Filed 1999·Granted Nov 20, 2001·12 cites·16 claims
- 2645US5655034AMach-Zehnder type modulator and method of driving the sameNEC CORP·Filed 1996·Granted Aug 5, 1997·13 cites·6 claims
- 2744US6002510ADriving apparatus for optical modulator and driving apparatus for modulator integrated light sourceNEC CORP·Filed 1998·Granted Dec 14, 1999·12 cites·18 claims
- 2839US5953149ASemiconductor electroabsorption optical modulatorNEC CORP·Filed 1997·Granted Sep 14, 1999·9 cites·5 claims
- 2934US5999298AElectroabsorption optical intesity modulator having a plurality of absorption edge wavelengthsNEC CORP·Filed 1997·Granted Dec 7, 1999·5 cites·7 claims
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