Inventor · disambiguated record
Hideaki Okayama
Also filed as: OKAYAMA HIDEAKI
62 granted patents·8 pending applications·761 citations·filing 1988–2017
99Inventor score
Top patents by PatentIndex Score
70 records- 0195US6553162B1Optical multiplexer-demultiplexer with mutually intersecting sub-gratingsOKI ELECTRIC IND CO LTD·Filed 2000·Granted Apr 22, 2003·79 cites·18 claims
- 0291US7664352B1Spot size converterOKI ELECTRIC IND CO LTD·Filed 2009·Granted Feb 16, 2010·24 cites·11 claims
- 0391US6427037B1Two-stage optical switch circuit networkOKI ELECTRIC IND CO LTD·Filed 2000·Granted Jul 30, 2002·49 cites·8 claims
- 0489US9823418B2Waveguide-type optical diffraction grating and optical wavelength filterOKI ELECTRIC IND CO LTD·Filed 2016·Granted Nov 21, 2017·6 cites·5 claims
- 0588US6657771B2Optical switch having optical deflectorOKI ELECTRIC IND CO LTD·Filed 2001·Granted Dec 2, 2003·32 cites·29 claims
- 0686US8064490B2Optical resonator and tunable laserOKAYAMA HIDEAKI·Filed 2009·Granted Nov 22, 2011·9 cites·12 claims
- 0786US5946129AWavelength conversion apparatus with improved efficiency, easy adjustability, and polarization insensitivityOKI ELECTRIC IND CO LTD·Filed 1997·Granted Aug 31, 1999·66 cites·42 claims
- 0884US8630517B2Optical multiplexer/demultiplexerOKAYAMA HIDEAKI·Filed 2011·Granted Jan 14, 2014·7 cites·14 claims
- 0981US7511878B2Wavelength conversion element with quasi-phase matching structureOKI ELECTRIC IND CO LTD·Filed 2007·Granted Mar 31, 2009·6 cites·8 claims
- 1081US6553164B1Y-branch waveguideOKI ELECTRIC IND CO LTD·Filed 2000·Granted Apr 22, 2003·25 cites·1 claims
- 1179US8401350B2Optical resonator, and fluid optical sensor employing an optical resonatorOKAYAMA HIDEAKI·Filed 2010·Granted Mar 19, 2013·3 cites·9 claims
- 1279US4846542AOptical switch matrixOKI ELECTRIC IND CO LTD·Filed 1988·Granted Jul 11, 1989·50 cites·4 claims
- 1378US9780903B2Optical wavelength demultiplexer having optical interference filters connected in cascadeOKI ELECTRIC IND CO LTD·Filed 2015·Granted Oct 3, 2017·3 cites·2 claims
- 1476US6701033B2Optical switch element and wavelength routerOKI ELECTRIC IND CO LTD·Filed 2001·Granted Mar 2, 2004·17 cites·9 claims
- 1575US7839565B2Optical deflectorOKI ELECTRIC IND CO LTD·Filed 2008·Granted Nov 23, 2010·4 cites·7 claims
- 1674US6154587AOptical cross connector apparatusOKI ELECTRIC IND CO LTD·Filed 1998·Granted Nov 28, 2000·44 cites·8 claims
- 1773US8682121B2Optical wavelength filter with wavelength characteristic variation minimizedOKAYAMA HIDEAKI·Filed 2011·Granted Mar 25, 2014·3 cites·14 claims
- 1870US6470112B2Lightwave systemOKI ELECTRIC IND CO LTD·Filed 2001·Granted Oct 22, 2002·8 cites·20 claims
- 1969US10228512B2Wavelength filterOKI ELECTRIC IND CO LTD·Filed 2017·Granted Mar 12, 2019·1 cites·5 claims
- 2069US5973809AMultiwavelength optical switch with its multiplicity reducedOKI ELECTRIC IND CO LTD·Filed 1998·Granted Oct 26, 1999·30 cites·8 claims
- 2167US10088628B1Optical waveguide element and receiving circuitOKI ELECTRIC IND CO LTD·Filed 2017·Granted Oct 2, 2018·2 cites·10 claims
- 2265US7835606B2Optical multiplexing/demultiplexing deviceOKI ELECTRIC IND CO LTD·Filed 2008·Granted Nov 16, 2010·3 cites·10 claims
- 2365US7684328B2Data transfer networkOKI ELECTRIC IND CO LTD·Filed 2006·Granted Mar 23, 2010·3 cites·2 claims
- 2464US9151901B2Wavelength-selective path-switching elementOKI ELECTRIC IND CO LTD·Filed 2013·Granted Oct 6, 2015·1 cites·10 claims
- 2564US5388001APolarization-independent optical wavelength filter with simplified structureOKI ELECTRIC IND CO LTD·Filed 1993·Granted Feb 7, 1995·27 cites·34 claims
- 2663US8150224B2Spot-size converterOKAYAMA HIDEAKI·Filed 2010·Granted Apr 3, 2012·1 cites·6 claims
- 2763US6374018B1Optical switch, method of operating optical switch, and method of designing optical switchOKI ELECTRIC IND CO LTD·Filed 2000·Granted Apr 16, 2002·8 cites·14 claims
- 2862US9151898B2Optical deviceOKI ELECTRIC IND CO LTD·Filed 2013·Granted Oct 6, 2015·1 cites·9 claims
- 2962US6097517AWavelength routerOKI ELECTRIC IND CO LTD·Filed 1996·Granted Aug 1, 2000·21 cites·3 claims
- 3060US5636045APhotonic switching method and photonic switch utilizing sameOKI ELECTRIC IND CO LTD·Filed 1995·Granted Jun 3, 1997·24 cites·8 claims
- 3159US5086349AOptical switching system which employs reference beams with different wavelengthsOKI ELECTRIC IND CO LTD·Filed 1990·Granted Feb 4, 1992·23 cites·14 claims
- 3256US6879745B2Optical switchOKI ELECTRIC IND CO LTD·Filed 2001·Granted Apr 12, 2005·4 cites·4 claims
- 3355US8532452B2Optical device and Mach-Zehnder interferometerOKAYAMA HIDEAKI·Filed 2009·Granted Sep 10, 2013·1 cites·5 claims
- 3454US6665467B2Optical wavelength filterOKI ELECTRIC IND CO LTD·Filed 2001·Granted Dec 16, 2003·4 cites·12 claims
- 3553US7680361B2Optical buffer deviceOKI ELECTRIC IND CO LTD·Filed 2008·Granted Mar 16, 2010·2 cites·9 claims
- 3653US6456764B1Optical directional couplerOKI ELECTRIC IND CO LTD·Filed 2000·Granted Sep 24, 2002·3 cites·7 claims
- 3753US5786916AOptical-wavelength interchanger element and optical-wavelength interchanger deviceOKI ELECTRIC IND CO LTD·Filed 1996·Granted Jul 28, 1998·17 cites·17 claims
- 3852US5153934AWaveguide-type optical deviceOKI ELECTRIC IND CO LTD·Filed 1991·Granted Oct 6, 1992·17 cites·25 claims
- 3952US5123069AWaveguide-type optical switchOKI ELECTRIC IND CO LTD·Filed 1991·Granted Jun 16, 1992·18 cites·42 claims
- 4051US6493481B2Optical switch unitOKI ELECTRIC IND CO LTD·Filed 2001·Granted Dec 10, 2002·3 cites·12 claims
- 4151US6272270B1Optical wave combining/splitting deviceOKI ELECTRIC IND CO LTD·Filed 1998·Granted Aug 7, 2001·15 cites·10 claims
- 4251US2009209750A1Organic compound synthesizer and method for synthesizing organic compoundsOKI ELECTRIC IND CO LTD·Filed 2008·Application pending·0 cites
- 4350US6320998B1Optical switch for selectively connecting an optical input terminal with an optical output terminalOKI ELECTRIC IND CO LTD·Filed 1999·Granted Nov 20, 2001·14 cites·9 claims
- 4449US9804328B2Optical multiplexing and de-multiplexing element and arrayed-waveguide grating-type optical wavelength filterOKI ELECTRIC IND CO LTD·Filed 2016·Granted Oct 31, 2017·0 cites·7 claims
- 4549US6496613B2Wavelength routerOKI ELECTRIC IND CO LTD·Filed 2001·Granted Dec 17, 2002·2 cites·4 claims
- 4647US8693820B2Flat optical waveguide with connections to channel and input optical waveguidesOKAYAMA HIDEAKI·Filed 2012·Granted Apr 8, 2014·0 cites·6 claims
- 4747US6591036B2Optical multiplexing/demultiplexing deviceOKI ELECTRIC IND CO LTD·Filed 2001·Granted Jul 8, 2003·1 cites·5 claims
- 4847US6496614B1Light multiplexing wave division deviceOKI ELECTRIC IND CO LTD·Filed 2000·Granted Dec 17, 2002·1 cites·11 claims
- 4947US2007224091A1Organic compound synthesizing device, light irradiation device, and substrate for organic compound synthesisOKI DIGITAL IMAGING CORP·Filed 2007·Application pending·0 cites
- 5047US2009323755A1Optical resonator and laser light sourceOKI ELECTRIC IND CO LTD·Filed 2009·Application pending·0 cites
Showing the top 50 of 70 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →