Inventor · disambiguated record
Youichi Nagai
Also filed as: NAGAI YOUICHI
82 granted patents·18 pending applications·617 citations·filing 1993–2021
99Inventor score
Top patents by PatentIndex Score
100 records- 0197US5908480AParticulate trap for diesel engineSUMITOMO ELECTRIC INDUSTRIES·Filed 1997·Granted Jun 1, 1999·184 cites·20 claims
- 0293US8243139B2Image pickup device, visibility support apparatus, night vision device, navigation support apparatus, and monitoring deviceNAGAI YOUICHI·Filed 2009·Granted Aug 14, 2012·17 cites·16 claims
- 0393US7732236B2III nitride semiconductor crystal and manufacturing method thereof, III nitride semiconductor device manufacturing method thereof, and light emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Granted Jun 8, 2010·20 cites·14 claims
- 0492US7476909B2Light emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Granted Jan 13, 2009·29 cites·6 claims
- 0592US5709722AParticulate trap for diesel engineSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Jan 20, 1998·88 cites·13 claims
- 0689US7508046B2PhotodetectorSUMITOMO ELECTRIC INDUSTRIES·Filed 2007·Granted Mar 24, 2009·11 cites·15 claims
- 0786US8378300B2Near-infrared imaging sensorSUMITOMO ELECTRIC INDUSTRIES·Filed 2010·Granted Feb 19, 2013·4 cites·8 claims
- 0885US7999231B2Moisture detector, biological body moisture detector, natural product moisture detector, and product/material moisture detectorSUMITOMO ELECTRIC INDUCTRIES LTD·Filed 2009·Granted Aug 16, 2011·12 cites·15 claims
- 0984US7608825B2Image pickup device, vision enhancement apparatus, night-vision apparatus, navigation support apparatus, and monitoring apparatusSUMITOMO ELECTRIC INDUSTRIES·Filed 2007·Granted Oct 27, 2009·7 cites·17 claims
- 1082US8274127B2Photodiode array for image pickup deviceNAGAI YOUICHI·Filed 2009·Granted Sep 25, 2012·6 cites·1 claims
- 1181US9577131B2Concentrator photovoltaic module, concentrator photovoltaic panel, and flexible printed circuit for concentrator photovoltaic moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Granted Feb 21, 2017·3 cites·11 claims
- 1281US9040955B2Semiconductor device, optical sensor device and semiconductor device manufacturing methodFUJII KEI·Filed 2011·Granted May 26, 2015·2 cites·11 claims
- 1381US8642943B2Semiconductor wafer, light-receiving element, light-receiving element array, hybrid-type detection device, optical sensor device, and process for production of semiconductor waferMORI HIROKI·Filed 2010·Granted Feb 4, 2014·4 cites·16 claims
- 1481US8624189B2Gas monitoring device, combustion state monitoring device, secular change monitoring device, and impurity concentration monitoring deviceINADA HIROSHI·Filed 2009·Granted Jan 7, 2014·6 cites·20 claims
- 1581US8513759B2Photodiode arrayIGUCHI YASUHIRO·Filed 2010·Granted Aug 20, 2013·2 cites·1 claims
- 1681US7423284B2Light emitting device, method for making the same, and nitride semiconductor substrateSUMITOMO ELECTRIC INDUSTRIES·Filed 2006·Granted Sep 9, 2008·10 cites·4 claims
- 1781US7190004B2Light emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2004·Granted Mar 13, 2007·32 cites·162 claims
- 1878US8188559B2Light-receiving element and light-receiving element arrayIGUCHI YASUHIRO·Filed 2009·Granted May 29, 2012·5 cites·9 claims
- 1977US9698297B2Light-receiving device and method for producing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Jul 4, 2017·2 cites·4 claims
- 2077US8461570B2Semiconductor device and manufacturing method thereofFUJII KEI·Filed 2010·Granted Jun 11, 2013·4 cites·7 claims
- 2177US5863311AParticulate trap for diesel engineSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Jan 26, 1999·51 cites·38 claims
- 2276US8623990B2Polyester resin compositionWATANABE YUKIE·Filed 2011·Granted Jan 7, 2014·3 cites·26 claims
- 2376US8373156B2Biological component detection deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2009·Granted Feb 12, 2013·4 cites·13 claims
- 2476US7687822B2Light emitting apparatusSUMITOMO ELECTRIC INDUSTRIES·Filed 2007·Granted Mar 30, 2010·6 cites·2 claims
- 2574US8022449B2Photodiode array, method of manufacturing the same, and detecting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2009·Granted Sep 20, 2011·4 cites·7 claims
- 2673US7745895B2Semiconductor light emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2006·Granted Jun 29, 2010·4 cites·12 claims
- 2772US8362521B2III nitride semiconductor crystal, III nitride semiconductor device, and light emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2010·Granted Jan 29, 2013·2 cites·13 claims
- 2871US8198623B2Photodiode array, method for manufacturing photodiode array, epitaxial wafer, and method for manufacturing epitaxial waferAKITA KATSUSHI·Filed 2010·Granted Jun 12, 2012·2 cites·11 claims
- 2971US7875906B2Photodetector and production method thereofSUMITOMO ELECTRIC INDUSTRIES·Filed 2008·Granted Jan 25, 2011·2 cites·8 claims
- 3070US7491974B2Light-emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2006·Granted Feb 17, 2009·4 cites·15 claims
- 3167US9159853B2Group III-V compound semiconductor photo detector, method of fabricating group III-V compound semiconductor photo detector, photo detector, and epitaxial waferSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Granted Oct 13, 2015·1 cites·7 claims
- 3267US8546758B2Food quality examination device, food component examination device, foreign matter component examination device, taste examination device, and changed state examination deviceNAGAI YOUICHI·Filed 2009·Granted Oct 1, 2013·1 cites·18 claims
- 3367US8182132B2Multistage-mixing microdeviceNAGAI YOUICHI·Filed 2008·Granted May 22, 2012·4 cites·20 claims
- 3467US6894875B2Magnetic head suspension with both protected wiring and unprotected wiring, in addition to terminalsDAINIPPON PRINTING CO LTD·Filed 2002·Granted May 17, 2005·8 cites·8 claims
- 3566US10560051B2Photovoltaic apparatusSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Feb 11, 2020·1 cites·8 claims
- 3666US8174118B2Detection device and method for manufacturing the sameNAGAI YOUICHI·Filed 2010·Granted May 8, 2012·2 cites·12 claims
- 3765US8866199B2Group III-V compound semiconductor photo detector, method of fabricating group III-V compound semiconductor photo detector, photo detector, and epitaxial waferAKITA KATSUSHI·Filed 2010·Granted Oct 21, 2014·1 cites·7 claims
- 3865US8564666B2Image pickup device, visibility support apparatus, night vision device, navigation support apparatus, and monitoring deviceNAGAI YOUICHI·Filed 2012·Granted Oct 22, 2013·0 cites·17 claims
- 3964US11101395B2Wiring moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Aug 24, 2021·0 cites·14 claims
- 4064US10985286B2Power generation module and wiring substrateSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Apr 20, 2021·0 cites·16 claims
- 4164USD785575SFlexible printed wiring boardSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Granted May 2, 2017·7 cites·1 claims
- 4262US7560740B2Light-emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2006·Granted Jul 14, 2009·2 cites·7 claims
- 4360US9923107B2Photovoltaic module, photovoltaic apparatus, and method for producing photovoltaic moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Mar 20, 2018·0 cites·10 claims
- 4460US2014197373A1Light-receiving device and method for producing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Application pending·0 cites
- 4559USD784936SFlexible printed wiring board with deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Granted Apr 25, 2017·8 cites·1 claims
- 4659US8969851B2Detection device, photodiode array, and method for manufacturing the sameINADA HIROSHI·Filed 2010·Granted Mar 3, 2015·1 cites·15 claims
- 4758US2014054545A1Photodetector, epitaxial wafer and method for producing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2012·Application pending·0 cites
- 4857US9837558B2Photovoltaic module and photovoltaic panelSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Granted Dec 5, 2017·0 cites·11 claims
- 4956US10818810B2Concentrator photovoltaic module, concentrator photovoltaic device, and hydrogen generating systemSUMITOMO ELECTRIC INDUSTRIES·Filed 2017·Granted Oct 27, 2020·0 cites·7 claims
- 5056US10680127B2Power generation circuit unitSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Jun 9, 2020·0 cites·15 claims
Showing the top 50 of 100 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Youichi Nagai files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →