Inventor · disambiguated record
Tomiyoshi Ushiyama
Also filed as: USHIYAMA TOMIYOSHI
22 granted patents·2 pending applications·579 citations·filing 1996–2008
96Inventor score
Files withSEIKO EPSON CORP24
Top patents by PatentIndex Score
24 records- 0190US6371617B1ProjectorSEIKO EPSON CORP·Filed 2000·Granted Apr 16, 2002·26 cites·4 claims
- 0289US5743610AProjection-type display apparatusSEIKO EPSON CORP·Filed 1996·Granted Apr 28, 1998·102 cites·20 claims
- 0388US6443576B1ProjectorSEIKO EPSON CORP·Filed 2000·Granted Sep 3, 2002·24 cites·15 claims
- 0488US5978136AOptical element, polarization illumination device, and projection display apparatusSEIKO EPSON CORP·Filed 1997·Granted Nov 2, 1999·87 cites·22 claims
- 0586US6979960B2Circuit for driving light source, projector, method for controlling lighting of light source, and computer readable program for executing the sameSEIKO EPSON CORP·Filed 2003·Granted Dec 27, 2005·38 cites·8 claims
- 0683US6690282B2Light-source lamp unit, light-source device and projection-type display apparatusSEIKO EPSON CORP·Filed 2001·Granted Feb 10, 2004·22 cites·20 claims
- 0783US6084714APolarizing illumination device and projection display deviceSEIKO EPSON CORP·Filed 1999·Granted Jul 4, 2000·63 cites·8 claims
- 0882US7006004B2Light-source lamp unit, light-source device and projection-type display apparatusSEIKO EPSON CORP·Filed 2003·Granted Feb 28, 2006·16 cites·2 claims
- 0980US6268799B1Light-source lamp unit, light-source device and projection-type display apparatus and method of useSEIKO EPSON CORP·Filed 1997·Granted Jul 31, 2001·50 cites·24 claims
- 1078USD420455SReplacement lamp for projectorSEIKO EPSON CORP·Filed 1997·Granted Feb 8, 2000·21 cites·1 claims
- 1176US6547401B2ProjectorSEIKO EPSON CORP·Filed 2001·Granted Apr 15, 2003·10 cites·19 claims
- 1272USRE40251EOptical element, polarization illumination device, and projectorSEIKO EPSON CORP·Filed 2005·Granted Apr 22, 2008·2 cites·24 claims
- 1372US6805450B2ProjectorSEIKO EPSON CORP·Filed 2001·Granted Oct 19, 2004·8 cites·8 claims
- 1472US6556256B1Projector and prism used thereinSEIKO EPSON CORP·Filed 2000·Granted Apr 29, 2003·14 cites·11 claims
- 1572US6092901APolarizing illumination device and projection display deviceSEIKO EPSON CORP·Filed 1998·Granted Jul 25, 2000·43 cites·16 claims
- 1667US6141150ADichroic prism, prism unit, and projection display apparatusSEIKO EPSON CORP·Filed 1997·Granted Oct 31, 2000·25 cites·20 claims
- 1765US6637886B2Projection display deviceSEIKO EPSON CORP·Filed 2003·Granted Oct 28, 2003·5 cites·5 claims
- 1862US6994438B2Optical component casing, optical device and projectorSEIKO EPSON CORP·Filed 2003·Granted Feb 7, 2006·6 cites·11 claims
- 1959US6612702B1Projection display deviceSEIKO EPSON CORP·Filed 1999·Granted Sep 2, 2003·5 cites·18 claims
- 2058USRE39243EOptical element, polarization illumination device, and projectorSEIKO EPSON CORP·Filed 2001·Granted Aug 22, 2006·2 cites·24 claims
- 2148US2008192210A1Light source device and projectorSEIKO EPSON CORP·Filed 2008·Application pending·0 cites
- 2247US7126648B2Liquid crystal projector comprising a plurality of light shielding members fixed between the lens array and the polarized light generatorSEIKO EPSON CORP·Filed 2003·Granted Oct 24, 2006·2 cites·12 claims
- 2347US2008024853A1Light source device and projectorSEIKO EPSON CORP·Filed 2007·Application pending·0 cites
- 2443USRE39859EDichroic prism, prism unit, and projection display apparatusSEIKO EPSON CORP·Filed 1997·Granted Sep 25, 2007·8 cites·25 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →