Inventor · disambiguated record
Yoshitomo Kumai
Also filed as: KUMAI YOSHITOMO
31 granted patents·12 pending applications·55 citations·filing 2006–2025
95Inventor score
Top patents by PatentIndex Score
43 records- 0191US8619215B2Optical element, method for manufacturing the same, liquid crystal device, and electronic apparatusKUMAI YOSHITOMO·Filed 2008·Granted Dec 31, 2013·16 cites·16 claims
- 0288US8416371B2Polarization device, method of manufacturing the same, liquid crystal device, and electronic apparatusKUMAI YOSHITOMO·Filed 2011·Granted Apr 9, 2013·7 cites·21 claims
- 0383US9977168B2Optical element, method for manufacturing the same, and electronic apparatusSEIKO EPSON CORP·Filed 2016·Granted May 22, 2018·3 cites·11 claims
- 0482US9164307B2Polarizer, polarizer producing process, projector, liquid crystal device, and electronic deviceSEIKO EPSON CORP·Filed 2012·Granted Oct 20, 2015·3 cites·21 claims
- 0582US8567215B2Method for producing polarizing elementKUMAI YOSHITOMO·Filed 2012·Granted Oct 29, 2013·2 cites·3 claims
- 0678US7755717B2Polarizing element, polarizing element manufacturing method, liquid crystal device, and projection displaySEIKO EPSON CORP·Filed 2008·Granted Jul 13, 2010·7 cites·8 claims
- 0775USRE49885EPolarization device, method of manufacturing the same, liquid crystal device, and electronic apparatusSEIKO EPSON CORP·Filed 2021·Granted Mar 26, 2024·0 cites·30 claims
- 0873US8471984B2Polarizing element, method for producing same, liquid crystal device, electronic apparatus, and projection displayKUMAI YOSHITOMO·Filed 2009·Granted Jun 25, 2013·3 cites·9 claims
- 0971US10859744B2Method of manufacturing wire grid polarization elementSEIKO EPSON CORP·Filed 2018·Granted Dec 8, 2020·1 cites·18 claims
- 1071US2019072817A1Polarization device, method of manufacturing the same, liquid crystal device, and electronic apparatusSEIKO EPSON CORP·Filed 2018·Application pending·0 cites
- 1171US2025183621A1Method of manufacturing photonic crystal and method of manufacturing light-emitting deviceSEIKO EPSON CORP·Filed 2024·Application pending·0 cites
- 1270US8593593B2Polarization element, projector, liquid crystal device, electronic apparatus, and method of manufacturing polarization elementKUMAI YOSHITOMO·Filed 2011·Granted Nov 26, 2013·1 cites·17 claims
- 1370US8549880B2Method for producing polarizing elementKUMAI YOSHITOMO·Filed 2012·Granted Oct 8, 2013·2 cites·4 claims
- 1469US8467017B2Polarizing element, method for producing same, liquid crystal device, electronic apparatus, and projection displayKUMAI YOSHITOMO·Filed 2009·Granted Jun 18, 2013·2 cites·12 claims
- 1568US10386557B2Optical element, method for manufacturing the same, and electronic apparatusSEIKO EPSON CORP·Filed 2018·Granted Aug 20, 2019·0 cites·11 claims
- 1668US2024283220A1Method for manufacturing photonic crystal and method for manufacturing light-emitting deviceSEIKO EPSON CORP·Filed 2024·Application pending·0 cites
- 1768US2025242437A1Laser irradiation apparatusSEIKO EPSON CORP·Filed 2025·Application pending·0 cites
- 1867US2023307892A1Processing head and laser processing apparatusSEIKO EPSON CORP·Filed 2023·Application pending·0 cites
- 1967US2025229339A1Laser irradiation apparatusSEIKO EPSON CORP·Filed 2025·Application pending·0 cites
- 2066US10866349B2Wire grid polarization element and electronic deviceSEIKO EPSON CORP·Filed 2018·Granted Dec 15, 2020·0 cites·8 claims
- 2164USRE47179EPolarization device, method of manufacturing the same, liquid crystal device, and electronic apparatusSEIKO EPSON CORP·Filed 2016·Granted Dec 25, 2018·0 cites·30 claims
- 2264US7608474B2Method for manufacturing optical elementSEIKO EPSON CORP·Filed 2006·Granted Oct 27, 2009·3 cites·2 claims
- 2363USRE45993EPolarization device, method of manufacturing the same, liquid crystal device, and electronic apparatusSEIKO EPSON CORP·Filed 2013·Granted May 3, 2016·0 cites·32 claims
- 2463US8094373B2Polarization element, method for manufacturing the same, liquid crystal device, and electronic apparatusKUMAI YOSHITOMO·Filed 2008·Granted Jan 10, 2012·3 cites·11 claims
- 2561US8488070B2Polarizing element and method for manufacturing the same, projection type display, liquid crystal device, and electronic apparatusKUMAI YOSHITOMO·Filed 2010·Granted Jul 16, 2013·1 cites·17 claims
- 2658US11762271B2ProjectorSEIKO EPSON CORP·Filed 2022·Granted Sep 19, 2023·0 cites·9 claims
- 2756US7894020B2Polarizing device, method for manufacturing the same, liquid crystal device, and projection display deviceSEIKO EPSON CORP·Filed 2008·Granted Feb 22, 2011·1 cites·11 claims
- 2854US11346990B2Polarizing element, liquid crystal apparatus and electronic apparatusSEIKO EPSON CORP·Filed 2019·Granted May 31, 2022·0 cites·11 claims
- 2952US10877363B2Display device and reflective polarizing elementSEIKO EPSON CORP·Filed 2019·Granted Dec 29, 2020·0 cites·9 claims
- 3052US8771530B2Method for producing polarizing elementSEIKO EPSON CORP·Filed 2013·Granted Jul 8, 2014·0 cites·4 claims
- 3152US7969534B2Polarizing element, polarizing element manufacturing method, liquid crystal device, and projection displaySEIKO EPSON CORP·Filed 2010·Granted Jun 28, 2011·0 cites·20 claims
- 3252US2021296529A1Light Emitting Device And ProjectorSEIKO EPSON CORP·Filed 2021·Application pending·0 cites
- 3351US10503005B2Wire grid polarization element and projection type display apparatusSEIKO EPSON CORP·Filed 2018·Granted Dec 10, 2019·0 cites·20 claims
- 3450US9201170B2Method for producing polarizing elementSEIKO EPSON CORP·Filed 2013·Granted Dec 1, 2015·0 cites·4 claims
- 3550US8724056B2Polarizing element, liquid crystal device, and electronic apparatusKUMAI YOSHITOMO·Filed 2012·Granted May 13, 2014·0 cites·19 claims
- 3647US7666468B2Method for manufacturing optical elementSEIKO EPSON CORP·Filed 2006·Granted Feb 23, 2010·0 cites·1 claims
- 3746US8687151B2Polarization element comprising a plurality of metal protruding sections formed in a striped manner having first and second heat radiation sections tilted in opposite directionsKUMAI YOSHITOMO·Filed 2010·Granted Apr 1, 2014·0 cites·9 claims
- 3846US2014293196A1Method for producing polarizing element, polarizing element, liquid crystal display device, and electronic apparatusSEIKO EPSON CORP·Filed 2014·Application pending·0 cites
- 3945US2008218670A1Liquid crystal device and electronic apparatusSEIKO EPSON CORP·Filed 2007·Application pending·0 cites
- 4045US2008137010A1Polarizing element, method for manufacturing the same, liquid crystal device and electronic apparatusSEIKO EPSON CORP·Filed 2007·Application pending·0 cites
- 4143US8205992B2Polarization element and projection display deviceKUMAI YOSHITOMO·Filed 2010·Granted Jun 26, 2012·0 cites·13 claims
- 4242US2011310328A1Polarization device, method of manufacturing the same, liquid crystal device, and electronic apparatusKUMAI YOSHITOMO·Filed 2011·Application pending·0 cites
- 4339US2010227054A1Method of manufacturing polarization elementSEIKO EPSON CORP·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →