Inventor · disambiguated record
Nobutaka Minefuji
Also filed as: MINEFUJI NOBUTAKA
52 granted patents·8 pending applications·706 citations·filing 1986–2023
98Inventor score
Files withSEIKO EPSON CORP30ASAHI OPTICAL CO LTD20PENTAX CORP5NAGAREKAWA SATORU2CASIO COMPUTER CO LTD1
Top patents by PatentIndex Score
60 records- 0194US6396627B1Stereoscopic microscope including zoom and relay optical systemsASAHI OPTICAL CO LTD·Filed 2000·Granted May 28, 2002·76 cites·12 claims
- 0293US7307799B2Imaging optical systemPENTAX CORP·Filed 2005·Granted Dec 11, 2007·40 cites·7 claims
- 0392US5442413APupil conjugate-coupling device in projecting optical systemASAHI OPTICAL CO LTD·Filed 1993·Granted Aug 15, 1995·127 cites·39 claims
- 0491US7957078B2Projection optical system and projection type image display deviceSEIKO EPSON CORP·Filed 2010·Granted Jun 7, 2011·13 cites·16 claims
- 0590US10539766B2Projection optical system and projection image display deviceSEIKO EPSON CORP·Filed 2017·Granted Jan 21, 2020·8 cites·14 claims
- 0688US12007678B2Projection system and projector with first optical system and second optical systemSEIKO EPSON CORP·Filed 2021·Granted Jun 11, 2024·2 cites·13 claims
- 0787US8014075B2Projection type image display deviceSEIKO EPSON CORP·Filed 2008·Granted Sep 6, 2011·17 cites·11 claims
- 0887US7855840B2Projection zoom lens and projection type image display deviceSEIKO EPSON CORP·Filed 2010·Granted Dec 21, 2010·10 cites·14 claims
- 0985US8794772B2Proximity projector having a dust-proof cover with an anti-reflection filmSEIKO EPSON CORP·Filed 2013·Granted Aug 5, 2014·5 cites·14 claims
- 1085US8157386B2ProjectorNAGAREKAWA SATORU·Filed 2011·Granted Apr 17, 2012·6 cites·2 claims
- 1185US8113664B2ProjectorNAGAREKAWA SATORU·Filed 2008·Granted Feb 14, 2012·10 cites·7 claims
- 1284US10534252B2Projection optical system and projectorSEIKO EPSON CORP·Filed 2016·Granted Jan 14, 2020·4 cites·17 claims
- 1384US6597513B2Zoom lens systemPENTAX CORP·Filed 2002·Granted Jul 22, 2003·29 cites·7 claims
- 1483US10466452B2Projection optical system and projectorSEIKO EPSON CORP·Filed 2016·Granted Nov 5, 2019·4 cites·20 claims
- 1583US8164838B2Projection optical system and projection type image display deviceMINEFUJI NOBUTAKA·Filed 2011·Granted Apr 24, 2012·8 cites·17 claims
- 1680US9671598B2Projection optical systemSEIKO EPSON CORP·Filed 2016·Granted Jun 6, 2017·3 cites·9 claims
- 1779US6781768B2Zoom len systemPENTAX CORP·Filed 2002·Granted Aug 24, 2004·21 cites·4 claims
- 1876US5283599AApparatus for combining and projecting imagesASAHI OPTICAL CO LTD·Filed 1992·Granted Feb 1, 1994·40 cites·14 claims
- 1975US9645362B2Projection optical systemSEIKO EPSON CORP·Filed 2016·Granted May 9, 2017·2 cites·8 claims
- 2073US5278698AMagnifying projecting lensASAHI OPTICAL CO LTD·Filed 1993·Granted Jan 11, 1994·37 cites·33 claims
- 2169US10824059B2Projection system and projection-type image display apparatusSEIKO EPSON CORP·Filed 2019·Granted Nov 3, 2020·1 cites·18 claims
- 2269US5600488AProjection lens assembly and projectorCASIO COMPUTER CO LTD·Filed 1995·Granted Feb 4, 1997·34 cites·16 claims
- 2368US10156708B2Projection zoom lens and projection type image display deviceSEIKO EPSON CORP·Filed 2017·Granted Dec 18, 2018·1 cites·20 claims
- 2468US7667898B2Zoom lens and projectorSEIKO EPSON CORP·Filed 2007·Granted Feb 23, 2010·4 cites·12 claims
- 2567US8434878B2Proximity projector with a transmissive cover with modified reflectance propertiesMORIKUNI EIJI·Filed 2009·Granted May 7, 2013·2 cites·17 claims
- 2667US6181488B1Photographic lensASAHI OPTICAL CO LTD·Filed 2000·Granted Jan 30, 2001·9 cites·16 claims
- 2767US5305029AProjectorASAHI OPTICAL CO LTD·Filed 1993·Granted Apr 19, 1994·22 cites·23 claims
- 2867US4832465AZoom lens for use in copyingASAHI OPTICAL CO LTD·Filed 1986·Granted May 23, 1989·25 cites·35 claims
- 2965US5291241AOptical deviceASAHI OPTICAL CO LTD·Filed 1991·Granted Mar 1, 1994·15 cites·20 claims
- 3059US12235465B2Projection system and projectorSEIKO EPSON CORP·Filed 2022·Granted Feb 25, 2025·0 cites·9 claims
- 3158US4825252AColor zoom copying apparatusASAHI OPTICAL CO LTD·Filed 1988·Granted Apr 25, 1989·11 cites·16 claims
- 3256US11550132B2Projection optical system and projectorSEIKO EPSON CORP·Filed 2020·Granted Jan 10, 2023·0 cites·6 claims
- 3356US5260833AZoom lens systemASAHI OPTICAL CO LTD·Filed 1992·Granted Nov 9, 1993·19 cites·5 claims
- 3456US5155629AZoom lens systemASAHI OPTICAL CO LTD·Filed 1991·Granted Oct 13, 1992·19 cites·4 claims
- 3556US2023168477A1Projection system and projectorSEIKO EPSON CORP·Filed 2022·Application pending·0 cites
- 3655US5066987AShading board for copying apparatusASAHI OPTICAL CO LTD·Filed 1989·Granted Nov 19, 1991·9 cites·7 claims
- 3755US2023314777A1Projection system and projectorSEIKO EPSON CORP·Filed 2023·Application pending·0 cites
- 3854US9810976B2Projection optical systemSEIKO EPSON CORP·Filed 2016·Granted Nov 7, 2017·0 cites·18 claims
- 3954US6181487B1Photographic lensASAHI OPTICAL CO LTD·Filed 1998·Granted Jan 30, 2001·15 cites·8 claims
- 4054US2023367191A1Projection system and projectorSEIKO EPSON CORP·Filed 2023·Application pending·0 cites
- 4153US6344931B1Zoom lens systemASAHI OPTICAL CO LTD·Filed 2000·Granted Feb 5, 2002·4 cites·6 claims
- 4252US11061308B2Projection optical system and projectorSEIKO EPSON CORP·Filed 2020·Granted Jul 13, 2021·0 cites·10 claims
- 4352US4913540ATelecentric projection lens systemASAHI OPTICAL CO LTD·Filed 1989·Granted Apr 3, 1990·14 cites·7 claims
- 4452US4813773ACopying zoom lensASAHI OPTICAL CO LTD·Filed 1988·Granted Mar 21, 1989·15 cites·10 claims
- 4552US2016216497A1Projection optical systemSEIKO EPSON CORP·Filed 2016·Application pending·0 cites
- 4651US10203487B2Imaging lens system, imaging apparatus and projectorSEIKO EPSON CORP·Filed 2017·Granted Feb 12, 2019·0 cites·20 claims
- 4749US9798125B2Projection optical system and projectorSEIKO EPSON CORP·Filed 2016·Granted Oct 24, 2017·0 cites·20 claims
- 4849US9110277B2Projection zoom lensSEIKO EPSON CORP·Filed 2012·Granted Aug 18, 2015·0 cites·12 claims
- 4949US2009122279A1ProjectorSEIKO EPSON CORP·Filed 2008·Application pending·0 cites
- 5048US10802389B2Projection system and projection-type image display apparatusSEIKO EPSON CORP·Filed 2019·Granted Oct 13, 2020·0 cites·20 claims
Showing the top 50 of 60 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →