Inventor · disambiguated record
Hirotaka Yanagisawa
Also filed as: YANAGISAWA HIROTAKA
20 granted patents·10 pending applications·27 citations·filing 2003–2025
89Inventor score
Top patents by PatentIndex Score
30 records- 0185US11073749B2Projection system, projection-type image display apparatus, and imaging apparatusSEIKO EPSON CORP·Filed 2020·Granted Jul 27, 2021·2 cites·20 claims
- 0281US6860607B2Integrator type illumination optical system and projector having the sameSEIKO EPSON CORP·Filed 2003·Granted Mar 1, 2005·18 cites·17 claims
- 0378US8876302B2ProjectorYANAGISAWA HIROTAKA·Filed 2009·Granted Nov 4, 2014·7 cites·17 claims
- 0469US2025306345A1Projection lens and projection apparatusSEIKO EPSON CORP·Filed 2025·Application pending·0 cites
- 0565US11537031B2Optical system, projector, and imaging apparatusSEIKO EPSON CORP·Filed 2021·Granted Dec 27, 2022·0 cites·10 claims
- 0660US11215908B2Lens unit, projection optical system, and projectorSEIKO EPSON CORP·Filed 2020·Granted Jan 4, 2022·0 cites·14 claims
- 0760US8038325B2Method for manufacture of reflecting mirror, reflecting mirror, illumination device, and projectorSEIKO EPSON CORP·Filed 2008·Granted Oct 18, 2011·0 cites·3 claims
- 0860US2025231468A1Projection system and adjustment mechanismSEIKO EPSON CORP·Filed 2025·Application pending·0 cites
- 0958US11892764B2Projection system and projectorSEIKO EPSON CORP·Filed 2021·Granted Feb 6, 2024·0 cites·20 claims
- 1057US12443008B2Projection system and projectorSEIKO EPSON CORP·Filed 2023·Granted Oct 14, 2025·0 cites·7 claims
- 1157US12411399B2Projection system and projectorSEIKO EPSON CORP·Filed 2023·Granted Sep 9, 2025·0 cites·7 claims
- 1257US11774731B2Optical system, projector, and imaging apparatusSEIKO EPSON CORP·Filed 2021·Granted Oct 3, 2023·0 cites·18 claims
- 1357US11333957B2Projection system and projectorSEIKO EPSON CORP·Filed 2021·Granted May 17, 2022·0 cites·21 claims
- 1455US12332414B2Attachment optical system and projection display systemSEIKO EPSON CORP·Filed 2022·Granted Jun 17, 2025·0 cites·7 claims
- 1555US2023314777A1Projection system and projectorSEIKO EPSON CORP·Filed 2023·Application pending·0 cites
- 1654US11385532B2Projection system and projectorSEIKO EPSON CORP·Filed 2021·Granted Jul 12, 2022·0 cites·19 claims
- 1754US2023314763A1Projection system and projectorSEIKO EPSON CORP·Filed 2023·Application pending·0 cites
- 1854US2023367191A1Projection system and projectorSEIKO EPSON CORP·Filed 2023·Application pending·0 cites
- 1952US12332415B2Attachment optical system and projection display systemSEIKO EPSON CORP·Filed 2022·Granted Jun 17, 2025·0 cites·7 claims
- 2052US11073753B2Projection optical system, projection-type image display device, and imaging deviceSEIKO EPSON CORP·Filed 2020·Granted Jul 27, 2021·0 cites·20 claims
- 2152US11073754B2Projection optical system, projection-type image display device, imaging device, and method of manufacturing optical elementSEIKO EPSON CORP·Filed 2020·Granted Jul 27, 2021·0 cites·20 claims
- 2252US2005190558A1Method for manufacture of reflecting mirror, reflecting mirror, illumination device, and projectorSEIKO EPSON CORP·Filed 2005·Application pending·0 cites
- 2351US11822224B2Projection system and projector having deflector and optical elementSEIKO EPSON CORP·Filed 2021·Granted Nov 21, 2023·0 cites·17 claims
- 2451US2014127538A1Secondary batteryTOSHIBA KK·Filed 2014·Application pending·0 cites
- 2548US7988298B2Projector having a shifted or rotated optical axisSEIKO EPSON CORP·Filed 2008·Granted Aug 2, 2011·0 cites·7 claims
- 2647US11940664B2Lens unit, projection optical system, and projector that accurately keep a thickness of a jointed lens at a desired valueSEIKO EPSON CORP·Filed 2020·Granted Mar 26, 2024·0 cites·8 claims
- 2746US2009194018A1Apparatus and method for manufacturing epitaxial waferHIGASHI SHINYA·Filed 2009·Application pending·0 cites
- 2846US2021173292A1Projection system and projectorSEIKO EPSON CORP·Filed 2020·Application pending·0 cites
- 2943US8491131B2ProjectorYANAGISAWA HIROTAKA·Filed 2008·Granted Jul 23, 2013·0 cites·8 claims
- 3033US2015140393A1Secondary battery connecting structure and secondary battery apparatus comprising the sameTOSHIBA KK·Filed 2015·Application pending·0 cites
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