Inventor · disambiguated record
Junichiro Ichikawa
Also filed as: ICHIKAWA JUNICHIRO
59 granted patents·6 pending applications·310 citations·filing 1994–2023
98Inventor score
Files withSUMITOMO OSAKA CEMENT CO LTD40ICHIKAWA JUNICHIRO4YAMAMOTO FUTOSHI4NEC CORP3ICHIOKA MASAYUKI2
Top patents by PatentIndex Score
65 records- 0193US10088734B2Waveguide-type optical elementSUMITOMO OSAKA CEMENT CO LTD·Filed 2016·Granted Oct 2, 2018·10 cites·23 claims
- 0292US8737773B2Optical control elementMOTOYA MASAYUKI·Filed 2012·Granted May 27, 2014·19 cites·15 claims
- 0392US7260280B2Optical deviceNAT INST FOR MATERIALS SCIENCE·Filed 2006·Granted Aug 21, 2007·15 cites·15 claims
- 0489US9946100B2Waveguide type optical elementSUMITOMO OSAKA CEMENT CO LTD·Filed 2016·Granted Apr 17, 2018·7 cites·5 claims
- 0588US9519200B2Optical control deviceSUMITOMO OSAKA CEMENT CO LTD·Filed 2014·Granted Dec 13, 2016·6 cites·8 claims
- 0688US7174059B2Optical deviceNAT INST FOR MATERIALS SCIENCE·Filed 2005·Granted Feb 6, 2007·9 cites·10 claims
- 0787US7689067B2Nested modulatorSUMITOMO OSAKA CEMENT CO LTD·Filed 2007·Granted Mar 30, 2010·10 cites·4 claims
- 0886US8644647B2Optical control deviceICHIKAWA JUNICHIRO·Filed 2007·Granted Feb 4, 2014·11 cites·11 claims
- 0986US7362924B2Optical modulatorSUMITOMO OSAKA CEMENT CO LTD·Filed 2006·Granted Apr 22, 2008·9 cites·14 claims
- 1084US10502988B2Optical modulator moduleSUMITOMO OSAKA CEMENT CO LTD·Filed 2017·Granted Dec 10, 2019·3 cites·8 claims
- 1183US10365534B2Optical waveguide deviceSUMITOMO OSAKA CEMENT CO LTD·Filed 2016·Granted Jul 30, 2019·3 cites·8 claims
- 1283US7764422B2THz wave generation deviceSUMITOMO OSAKA CEMENT CO LTD·Filed 2006·Granted Jul 27, 2010·7 cites·16 claims
- 1382US8380015B2Optical control deviceSUMITOMO OSAKA CEMENT CO LTD·Filed 2010·Granted Feb 19, 2013·4 cites·10 claims
- 1482US7831122B2Optical control device and manufacturing method thereofSUMITOMO OSAKA CEMENT CO LTD·Filed 2007·Granted Nov 9, 2010·7 cites·9 claims
- 1579US8669121B2Method for forming polarization reversalYAMAMOTO FUTOSHI·Filed 2011·Granted Mar 11, 2014·2 cites·2 claims
- 1679US7444039B2Optical modulatorSUMITOMO OSAKA CEMENT CO LTD·Filed 2006·Granted Oct 28, 2008·10 cites·15 claims
- 1777US9599843B2Optical modulatorSUMITOMO OSAKA CEMENT CO LTD·Filed 2014·Granted Mar 21, 2017·2 cites·8 claims
- 1877US9235066B2Optical modulatorSUMITOMO OSAKA CEMENT CO LTD·Filed 2013·Granted Jan 12, 2016·2 cites·8 claims
- 1977US8983239B2Optical control element having a plurality of optical control portionsICHIOKA MASAYUKI·Filed 2011·Granted Mar 17, 2015·4 cites·16 claims
- 2077US8600197B2Optical control deviceOIKAWA SATOSHI·Filed 2008·Granted Dec 3, 2013·5 cites·15 claims
- 2177US7768696B2THZ wave generatorSUMITOMO OSAKA CEMENT CO LTD·Filed 2005·Granted Aug 3, 2010·5 cites·10 claims
- 2277US7310453B2Optical modulatorSUMITOMO OSAKA CEMENT CO LTD·Filed 2003·Granted Dec 18, 2007·18 cites·17 claims
- 2376US8755641B2Optical modulatorICHIKAWA JUNICHIRO·Filed 2012·Granted Jun 17, 2014·2 cites·3 claims
- 2475US8396334B2Optical waveguide deviceICHIKAWA JUNICHIRO·Filed 2007·Granted Mar 12, 2013·6 cites·7 claims
- 2575US8391651B2Optical waveguide deviceICHIKAWA JUNICHIRO·Filed 2011·Granted Mar 5, 2013·3 cites·6 claims
- 2674US9002165B2Optical waveguide deviceICHIOKA MASAYUKI·Filed 2012·Granted Apr 7, 2015·3 cites·3 claims
- 2774US7899338B2Method and device for controlling bias of optical modulatorSUMITOMO OSAKA CEMENT CO LTD·Filed 2004·Granted Mar 1, 2011·15 cites·10 claims
- 2871US9746741B2Optical modulatorSUMITOMO OSAKA CEMENT CO·Filed 2014·Granted Aug 29, 2017·2 cites·9 claims
- 2971US7873244B2Light control deviceSUMITOMO OSAKA CEMENT CO LTD·Filed 2007·Granted Jan 18, 2011·3 cites·14 claims
- 3068US9551887B2Optical modulatorSUMITOMO OSAKA CEMENT CO LTD·Filed 2014·Granted Jan 24, 2017·1 cites·6 claims
- 3168US5526448AOptical waveguide modulator having a reduced D.C. driftSUMITOMO CEMENT COMPANY LTD·Filed 1994·Granted Jun 11, 1996·35 cites·24 claims
- 3266US9057893B2Light control elementMOTOYA MASAYUKI·Filed 2011·Granted Jun 16, 2015·1 cites·15 claims
- 3365US10498457B2Optical carrier-suppressed signal generatorSUMITOMO OSAKA CEMENT CO LTD·Filed 2012·Granted Dec 3, 2019·2 cites·4 claims
- 3464US11347086B2Optical elementSUMITOMO OSAKA CEMENT CO LTD·Filed 2019·Granted May 31, 2022·0 cites·4 claims
- 3563US8867042B2Method for evaluating characteristic of optical modulator having mach-zehnder interferometerKAWANISHI TETSUYA·Filed 2009·Granted Oct 21, 2014·2 cites·10 claims
- 3663US7869668B2Method for generating carrier residual signal and its deviceSUMITOMO OSAKA CEMENT CO LTD·Filed 2004·Granted Jan 11, 2011·7 cites·10 claims
- 3763US6539153B2Light limiterNEC CORP·Filed 2001·Granted Mar 25, 2003·7 cites·5 claims
- 3861US10502982B2Optical modulatorSUMITOMO OSAKA CEMENT CO LTD·Filed 2019·Granted Dec 10, 2019·0 cites·4 claims
- 3961US7912326B2Optical control deviceSUMITOMO OSAKA CEMENT CO LTD·Filed 2008·Granted Mar 22, 2011·1 cites·9 claims
- 4060US10338414B2Optical modulator moduleSUMITOMO OSAKA CEMENT CO LTD·Filed 2017·Granted Jul 2, 2019·0 cites·8 claims
- 4160US7985294B2Optical device and method of manufacturing the sameSUMITOMO OSAKA CEMENT CO LTD·Filed 2006·Granted Jul 26, 2011·2 cites·7 claims
- 4258US12504656B2Optical waveguide element, optical waveguide device, and optical transmission apparatusSUMITOMO OSAKA CEMENT CO LTD·Filed 2021·Granted Dec 23, 2025·0 cites·12 claims
- 4358US2024329436A1Optical Waveguide Device, and Optical Modulation Device and Optical Transmission Apparatus Using SameSUMITOMO OSAKA CEMENT CO LTD·Filed 2023·Application pending·0 cites
- 4455US10365506B2Optical modulatorSUMITOMO OSAKA CEMENT CO LTD·Filed 2016·Granted Jul 30, 2019·0 cites·5 claims
- 4554US9348156B2Optical waveguide element and method for manufacturing optical waveguide elementSUMITOMO OSAKA CEMENT CO LTD·Filed 2014·Granted May 24, 2016·0 cites·6 claims
- 4654US6218658B1Optical fuseNEC CORP·Filed 1999·Granted Apr 17, 2001·21 cites·20 claims
- 4751US8315496B2Optical elementKONDOU KATSUTOSHI·Filed 2008·Granted Nov 20, 2012·0 cites·7 claims
- 4850US8524509B2Method for forming polarization reversalYAMAMOTO FUTOSHI·Filed 2011·Granted Sep 3, 2013·0 cites·6 claims
- 4950US8293543B2Method for forming polarization reversalYAMAMOTO FUTOSHI·Filed 2011·Granted Oct 23, 2012·0 cites·8 claims
- 5049US2016313579A1Electro-optic elementSUMITOMO OSAKA CEMENT CO LTD·Filed 2014·Application pending·0 cites
Showing the top 50 of 65 patent records by PatentIndex Score.
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