Inventor · disambiguated record
Kazumasa Takabayashi
Also filed as: TAKABAYASHI KAZUMASA
35 granted patents·3 pending applications·144 citations·filing 2003–2022
96Inventor score
Top patents by PatentIndex Score
38 records- 0194US9705282B2Multi-wavelength laser light source and wavelength multiplexing communication systemFUJITSU LTD·Filed 2016·Granted Jul 11, 2017·9 cites·18 claims
- 0293US9793684B2Laser apparatusFUJITSU LTD·Filed 2016·Granted Oct 17, 2017·8 cites·15 claims
- 0392US10312663B2Tunable laser deviceFUJITSU LTD·Filed 2018·Granted Jun 4, 2019·7 cites·12 claims
- 0492US9722397B2Tunable laser and tunable laser moduleFUJITSU LTD·Filed 2015·Granted Aug 1, 2017·7 cites·3 claims
- 0591US7366220B2Tunable laserFUJITSU LTD·Filed 2005·Granted Apr 29, 2008·17 cites·17 claims
- 0691US6847662B2Wavelength-selectable laser capable of high-speed frequency controlFUJITSU LTD·Filed 2003·Granted Jan 25, 2005·38 cites·35 claims
- 0789US8860164B2Light receiving deviceFUJITSU LTD·Filed 2014·Granted Oct 14, 2014·4 cites·2 claims
- 0888US7539378B2Optical waveguide device and semiconductor deviceFUJITSU LTD·Filed 2007·Granted May 26, 2009·11 cites·13 claims
- 0985US10530119B2Wavelength locker, wavelength tunable laser apparatus, and method for controlling wavelength tunable laser apparatusFUJITSU LTD·Filed 2018·Granted Jan 7, 2020·3 cites·11 claims
- 1085US9698570B2Optical semiconductor element and method of manufacturing the sameFUJITSU LTD·Filed 2016·Granted Jul 4, 2017·4 cites·13 claims
- 1184US9147781B2Light receiving element with offset absorbing layerFUJITSU LTD·Filed 2014·Granted Sep 29, 2015·2 cites·1 claims
- 1281US8666200B2Optical modulation device, driving method of optical modulation device, and manufacturing method of optical modulation deviceFUJITSU LTD·Filed 2012·Granted Mar 4, 2014·3 cites·20 claims
- 1381US8546899B2Light receiving element, light receiving device, and light receiving moduleTAKABAYASHI KAZUMASA·Filed 2012·Granted Oct 1, 2013·6 cites·19 claims
- 1481US8428399B2Optical module, manufacturing method thereof, and optical transmitterTAKABAYASHI KAZUMASA·Filed 2009·Granted Apr 23, 2013·9 cites·9 claims
- 1579US7940819B2Tunable laser module, tunable laser apparatus and controlling method for tunable laserFUJITSU LTD·Filed 2009·Granted May 10, 2011·5 cites·20 claims
- 1677US9762034B2Tunable laser source, optical transmitter, and optical transmitter and receiver moduleFUJITSU LTD·Filed 2016·Granted Sep 12, 2017·2 cites·16 claims
- 1775US7873082B2Semiconductor integrated deviceFUJITSU LTD·Filed 2009·Granted Jan 18, 2011·4 cites·12 claims
- 1869US9966724B2Laser and method of controlling laserFUJITSU LTD·Filed 2017·Granted May 8, 2018·1 cites·25 claims
- 1968US12326642B2Wavelength filter and laser apparatusFUJITSU OPTICAL COMPONENTS LTD·Filed 2022·Granted Jun 10, 2025·0 cites·20 claims
- 2068US11984696B2Optical amplifier and inspection method of optical amplifierFUJITSU OPTICAL COMPONENTS LTD·Filed 2020·Granted May 14, 2024·0 cites·5 claims
- 2166US12300973B2Integrated photonic device and photonic integrated circuit using the sameFUJITSU OPTICAL COMPONENTS LTD·Filed 2021·Granted May 13, 2025·0 cites·9 claims
- 2266US8710614B2Light receiving element with offset absorbing layerTAKABAYASHI KAZUMASA·Filed 2012·Granted Apr 29, 2014·0 cites·15 claims
- 2360US12047121B2Optical device, optical transmission apparatus, optical reception apparatus, and optical communication apparatusFUJITSU OPTICAL COMPONENTS LTD·Filed 2022·Granted Jul 23, 2024·0 cites·8 claims
- 2458US10560213B2Optical deviceFUJITSU OPTICAL COMPONENTS LTD·Filed 2019·Granted Feb 11, 2020·0 cites·5 claims
- 2558US8724938B2Optical receiverTAKABAYASHI KAZUMASA·Filed 2012·Granted May 13, 2014·0 cites·9 claims
- 2657US10027088B2Integrated semiconductor optical element and manufacturing method for sameFUJITSU LTD·Filed 2017·Granted Jul 17, 2018·0 cites·5 claims
- 2756US9606380B2Method for manufacturing optical moduleFUJITSU LTD·Filed 2014·Granted Mar 28, 2017·0 cites·4 claims
- 2854US9711938B2Integrated semiconductor optical element and manufacturing method for sameFUJITSU LTD·Filed 2015·Granted Jul 18, 2017·0 cites·11 claims
- 2952US7130322B2Wavelength tunable laser and method of controlling the sameFUJITSU LTD·Filed 2004·Granted Oct 31, 2006·3 cites·17 claims
- 3052US2013230269A1Optical module, manufacturing method thereof, and optical transmitterFUJITSU LTD·Filed 2013·Application pending·0 cites
- 3147US8938138B2Optical semiconductor device and method of manufacturing optical semiconductor deviceFUJITSU LTD·Filed 2012·Granted Jan 20, 2015·0 cites·16 claims
- 3247US7242697B2Wavelength selection device, wavelength selection laser, and tunable laserFUJITSU LTD·Filed 2003·Granted Jul 10, 2007·1 cites·23 claims
- 3346US7627212B2Optical integrated deviceFUJITSU LTD·Filed 2008·Granted Dec 1, 2009·0 cites·12 claims
- 3444US9312663B2Laser device, light modulation device, and optical semiconductor deviceFUJITSU LTD·Filed 2015·Granted Apr 12, 2016·0 cites·20 claims
- 3544US7158547B2Wavelength tunable laser of small sizeFUJITSU LTD·Filed 2004·Granted Jan 2, 2007·0 cites·15 claims
- 3642US9948059B2Semiconductor laser light source and fabrication methodFUJITSU LTD·Filed 2016·Granted Apr 17, 2018·0 cites·18 claims
- 3739US2017353001A1Tunable laserFUJITSU LTD·Filed 2017·Application pending·0 cites
- 3838US2006002436A1Wavelength tunable laser and method of controlling the sameFUJITSU LTD·Filed 2004·Application pending·0 cites
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