Inventor · disambiguated record
Masayuki Takagi
Also filed as: TAKAGI MASAYUKI
140 granted patents·14 pending applications·2,564 citations·filing 1981–2025
99Inventor score
Top patents by PatentIndex Score
154 records- 0199US8837880B2Virtual image display deviceTAKEDA TAKASHI·Filed 2011·Granted Sep 16, 2014·298 cites·17 claims
- 0299US8711487B2Virtual image display device and manufacturing method of virtual image display deviceTAKEDA TAKASHI·Filed 2012·Granted Apr 29, 2014·312 cites·13 claims
- 0398US8854735B2Virtual image display systemTOTANI TAKAHIRO·Filed 2012·Granted Oct 7, 2014·177 cites·9 claims
- 0498US8662686B2Light guide plate and virtual image display apparatus having the sameTAKAGI MASAYUKI·Filed 2011·Granted Mar 4, 2014·305 cites·21 claims
- 0598US8587869B2Virtual image display deviceTOTANI TAKAHIRO·Filed 2012·Granted Nov 19, 2013·303 cites·13 claims
- 0698US8576491B2Virtual image display deviceTAKAGI MASAYUKI·Filed 2012·Granted Nov 5, 2013·313 cites·16 claims
- 0798US8564883B2Virtual image display deviceTOTANI TAKAHIRO·Filed 2012·Granted Oct 22, 2013·311 cites·17 claims
- 0896US10397560B2Transmission-type displaySEIKO EPSON CORP·Filed 2016·Granted Aug 27, 2019·17 cites·14 claims
- 0995US7720366B2Actuator, and lens unit and camera with the sameTAMRON KK·Filed 2007·Granted May 18, 2010·50 cites·10 claims
- 1094US10986303B2Virtual image display apparatus and video device unit manufacturing methodSEIKO EPSON CORP·Filed 2020·Granted Apr 20, 2021·3 cites·6 claims
- 1194US10078222B2Light guide device and virtual-image display deviceSEIKO EPSON CORP·Filed 2017·Granted Sep 18, 2018·13 cites·21 claims
- 1293US10520733B2Virtual image display device including first and second light guiding units and manufacturing method thereofSEIKO EPSON CORP·Filed 2017·Granted Dec 31, 2019·8 cites·15 claims
- 1393US8175287B2Sound deviceUENO MASATO·Filed 2007·Granted May 8, 2012·43 cites·11 claims
- 1493US7769192B2Speaker system with oscillation detection unitROLAND CORP·Filed 2006·Granted Aug 3, 2010·62 cites·21 claims
- 1592US10180576B2Virtual image display deviceSEIKO EPSON CORP·Filed 2017·Granted Jan 15, 2019·6 cites·18 claims
- 1691US9513479B2Virtual image display apparatusSEIKO EPSON CORP·Filed 2014·Granted Dec 6, 2016·12 cites·10 claims
- 1790US10108015B2Light guide device and virtual image display apparatusSEIKO EPSON CORP·Filed 2015·Granted Oct 23, 2018·6 cites·18 claims
- 1890US9261688B2Image relay optical system and virtual image display device including the sameTAKEDA TAKASHI·Filed 2012·Granted Feb 16, 2016·11 cites·15 claims
- 1990US9116342B2Virtual image display apparatusSEIKO EPSON CORP·Filed 2013·Granted Aug 25, 2015·11 cites·12 claims
- 2089US10674108B2Virtual image display apparatus and video device unit manufacturing methodSEIKO EPSON CORP·Filed 2019·Granted Jun 2, 2020·3 cites·8 claims
- 2188US10606095B2Virtual image display deviceSEIKO EPSON CORP·Filed 2019·Granted Mar 31, 2020·5 cites·10 claims
- 2287US10645374B2Head-mounted display device and display control method for head-mounted display deviceSEIKO EPSON CORP·Filed 2017·Granted May 5, 2020·5 cites·18 claims
- 2385US12436396B2Virtual image display device and optical unit capable of adjusting display position of virtual imageSEIKO EPSON CORP·Filed 2021·Granted Oct 7, 2025·1 cites·16 claims
- 2485US8007133B2Light source device and projectorSEIKO EPSON CORP·Filed 2008·Granted Aug 30, 2011·8 cites·16 claims
- 2584US9507154B2Virtual image display apparatusSEIKO EPSON CORP·Filed 2014·Granted Nov 29, 2016·6 cites·11 claims
- 2684US9400389B2Virtual image display deviceSEIKO EPSON CORP·Filed 2013·Granted Jul 26, 2016·4 cites·2 claims
- 2784US9195066B2Virtual image display apparatusSEIKO EPSON CORP·Filed 2014·Granted Nov 24, 2015·6 cites·12 claims
- 2884US8976087B2Virtual image display deviceSEIKO EPSON CORP·Filed 2013·Granted Mar 10, 2015·6 cites·9 claims
- 2982US10271003B2Virtual image display apparatus and video device unit manufacturing methodSEIKO EPSON CORP·Filed 2017·Granted Apr 23, 2019·2 cites·19 claims
- 3082US4516180AThin film magnetic headCOMPUTER BASIC TECH RES·Filed 1982·Granted May 7, 1985·28 cites·18 claims
- 3181US11163162B2Light control shade for transmissive display apparatusSEIKO EPSON CORP·Filed 2019·Granted Nov 2, 2021·2 cites·9 claims
- 3281US9720239B2Virtual image display deviceSEIKO EPSON CORP·Filed 2016·Granted Aug 1, 2017·2 cites·2 claims
- 3381US8976452B2Virtual image display deviceTAKAGI MASAYUKI·Filed 2012·Granted Mar 10, 2015·4 cites·11 claims
- 3480US11099398B2Virtual image display apparatusSEIKO EPSON CORP·Filed 2020·Granted Aug 24, 2021·1 cites·13 claims
- 3579US10481686B2Image display device for changing focal point and convergence of display imageSEIKO EPSON CORP·Filed 2018·Granted Nov 19, 2019·2 cites·8 claims
- 3679US10310270B2Virtual image display apparatusSEIKO EPSON CORP·Filed 2017·Granted Jun 4, 2019·2 cites·11 claims
- 3779US10101586B2Display device and control method for display deviceSEIKO EPSON CORP·Filed 2015·Granted Oct 16, 2018·3 cites·28 claims
- 3879US9477084B2Virtual image display apparatus including a light guide member having four or more curved surfacesSEIKO EPSON CORP·Filed 2014·Granted Oct 25, 2016·4 cites·20 claims
- 3978US10073273B2Virtual image display apparatusSEIKO EPSON CORP·Filed 2016·Granted Sep 11, 2018·2 cites·13 claims
- 4078US9979936B2Virtual image display apparatusSEIKO EPSON CORP·Filed 2016·Granted May 22, 2018·2 cites·16 claims
- 4178US4626947AThin film magnetic headCOMPUTER BASIC TECH RES·Filed 1983·Granted Dec 2, 1986·23 cites·2 claims
- 4277US5668685AMagnetic disc apparatusHITACHI LTD·Filed 1994·Granted Sep 16, 1997·25 cites·30 claims
- 4376US11204500B2Virtual image display deviceSEIKO EPSON CORP·Filed 2018·Granted Dec 21, 2021·2 cites·14 claims
- 4476US10701351B2Virtual image display deviceSEIKO EPSON CORP·Filed 2018·Granted Jun 30, 2020·2 cites·14 claims
- 4576US10394028B2Virtual image display apparatusSEIKO EPSON CORP·Filed 2016·Granted Aug 27, 2019·2 cites·12 claims
- 4675US12002188B2Optical module and virtual image display deviceSEIKO EPSON CORP·Filed 2023·Granted Jun 4, 2024·0 cites·13 claims
- 4775US10627644B2Virtual image display deviceSEIKO EPSON CORP·Filed 2019·Granted Apr 21, 2020·1 cites·9 claims
- 4875US10281963B2Image display device and head mounted image display deviceSEIKO EPSON CORP·Filed 2015·Granted May 7, 2019·2 cites·10 claims
- 4975US4750072AThin-film magnetic head provided with a magnetic film having regions of different magnetostriction constants and method of fabricating the sameHITACHI LTD·Filed 1986·Granted Jun 7, 1988·20 cites·16 claims
- 5074US11199712B2Virtual image display device including incident side and emission side diffraction elementsSEIKO EPSON CORP·Filed 2019·Granted Dec 14, 2021·1 cites·7 claims
Showing the top 50 of 154 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →