Inventor · disambiguated record
Akiko Nagahara
Also filed as: NAGAHARA AKIKO
54 granted patents·10 pending applications·377 citations·filing 1997–2025
98Inventor score
Files withFUJIFILM CORP33FUJI PHOTO OPTICAL CO LTD17FUJINON CORP5MURATA MANUFACTURING CO4NAGATOSHI YUKIKO2
Top patents by PatentIndex Score
64 records- 0190US8976455B2Variable-magnification projection optical system and projection display deviceFUJIFILM CORP·Filed 2013·Granted Mar 10, 2015·12 cites·16 claims
- 0290US6301058B2Wide-angle lensFUJI PHOTO OPTICAL CO LTD·Filed 2001·Granted Oct 9, 2001·48 cites·16 claims
- 0384US10527828B2Zoom lens, projection display device, and imaging apparatus for forming an intermediate imageFUJIFILM CORP·Filed 2017·Granted Jan 7, 2020·3 cites·11 claims
- 0484US6204976B1Zoom lensFUJI PHOTO OPTICAL CO LTD·Filed 2000·Granted Mar 20, 2001·29 cites·15 claims
- 0583US11280986B2Zoom lens, projection display device, and imaging apparatus for forming an intermediate imageFUJIFILM CORP·Filed 2019·Granted Mar 22, 2022·2 cites·18 claims
- 0682US10101641B2Zoom lens, projection display device, and imaging apparatusFUJIFILM CORP·Filed 2017·Granted Oct 16, 2018·3 cites·16 claims
- 0782US7280285B2Projection lens and projection display device using the sameFUJINON CORP·Filed 2006·Granted Oct 9, 2007·12 cites·13 claims
- 0880US6542311B2Zoom lens and projection type display apparatus using the sameFUJI PHOTO OPTICAL CO LTD·Filed 2001·Granted Apr 1, 2003·22 cites·5 claims
- 0979US9557537B2Zoom lens for projection and projection-type display apparatusFUJIFILM CORP·Filed 2015·Granted Jan 31, 2017·3 cites·20 claims
- 1078US8976454B2Variable-magnification projection optical system and projection display deviceFUJIFILM CORP·Filed 2013·Granted Mar 10, 2015·4 cites·16 claims
- 1178US7605985B2Projection zoom lens and projection type display deviceFujinon Corporartion·Filed 2008·Granted Oct 20, 2009·11 cites·18 claims
- 1278US2025364553A1Secondary batteryMURATA MANUFACTURING CO·Filed 2025·Application pending·0 cites
- 1377US8693105B2Variable magnification optical system for projection and projection-type display apparatusNAGATOSHI YUKIKO·Filed 2011·Granted Apr 8, 2014·4 cites·37 claims
- 1477US8270092B2Zoom lens for projection and projection-type display apparatusNAGATOSHI YUKIKO·Filed 2010·Granted Sep 18, 2012·4 cites·18 claims
- 1577US6580564B2Wide-angle zoom lens and projection-type display unit using itFUJI PHOTO OPTICAL CO LTD·Filed 2002·Granted Jun 17, 2003·19 cites·8 claims
- 1677US6222680B1Zoom lensFUJI PHOTO OPTICAL CO LTD·Filed 2000·Granted Apr 24, 2001·19 cites·8 claims
- 1775US6809877B2Zoom lens and projection display device using the sameFUJI PHOTO OPTICAL CO LTD·Filed 2003·Granted Oct 26, 2004·15 cites·24 claims
- 1874US2025334872A1Imaging optical system, projection type display device, and imaging apparatusFUJIFILM CORP·Filed 2025·Application pending·0 cites
- 1974US2025334873A1Imaging optical system, projection type display device, and imaging apparatusFUJIFILM CORP·Filed 2025·Application pending·0 cites
- 2073US11835697B2Zoom lens, projection display device, and imaging apparatus for forming an intermediate imageFUJIFILM CORP·Filed 2022·Granted Dec 5, 2023·0 cites·21 claims
- 2173US7522348B2Zoom lens and projection display device using the sameFUJINON CORP·Filed 2007·Granted Apr 21, 2009·6 cites·28 claims
- 2273US2025334781A1Imaging optical system, projection type display device, and imaging apparatusFUJIFILM CORP·Filed 2025·Application pending·0 cites
- 2372US8390935B2Projection zoom lens and projection display deviceNAGAHARA AKIKO·Filed 2010·Granted Mar 5, 2013·4 cites·15 claims
- 2472US2024387820A1Positive electrode active material and secondary batteryMURATA MANUFACTURING CO·Filed 2024·Application pending·0 cites
- 2571US9250427B2Projection lens and projection display apparatusFUJIFILM CORP·Filed 2014·Granted Feb 2, 2016·2 cites·14 claims
- 2671US7889431B2Projection zoom lens and projection-type display apparatusFUJINON CORP·Filed 2009·Granted Feb 15, 2011·5 cites·11 claims
- 2771US2025029990A1Secondary battery-use positive electrode active material, secondary battery-use positive electrode, and secondary batteryMURATA MANUFACTURING CO·Filed 2024·Application pending·0 cites
- 2870US2025006905A1Secondary batteryMURATA MANUFACTURING CO·Filed 2024·Application pending·0 cites
- 2968US10295804B2Zoom lens, projection display device, and imaging apparatus that forms an intermediate image at a postion conjugate to a reduction side imaging plane and causes the intermediate image to be re-imaged on a magnification side imaging planeFUJIFILM CORP·Filed 2017·Granted May 21, 2019·1 cites·19 claims
- 3068US8379316B2Zoom lens for projection and projection-type display apparatusFUJIFILM CORP·Filed 2011·Granted Feb 19, 2013·2 cites·19 claims
- 3168US2025306350A1Variable magnification optical system and imaging apparatusFUJIFILM CORP·Filed 2025·Application pending·0 cites
- 3264US8896929B2Projection zoom lens and projection type display deviceFUJIFILM CORP·Filed 2014·Granted Nov 25, 2014·1 cites·13 claims
- 3364US6801367B2Zoom lens and projection display device which uses sameFUJI PHOTO OPTICAL CO LTD·Filed 2003·Granted Oct 5, 2004·8 cites·23 claims
- 3463US9664884B2Projection zoom lens and projection type display deviceFUJIFILM CORP·Filed 2015·Granted May 30, 2017·1 cites·19 claims
- 3562US11989197B2Information processing apparatus, control method, and non-transitory storage medium for the sameCANON KK·Filed 2022·Granted May 21, 2024·0 cites·10 claims
- 3660US6011660AImaging lensFUJI PHOTO OPTICAL CO LTD·Filed 1997·Granted Jan 4, 2000·22 cites·9 claims
- 3758US5966251AImaging lensFUJI PHOTO OPTICAL CO LTD·Filed 1998·Granted Oct 12, 1999·20 cites·4 claims
- 3856US11567294B2Imaging lens and imaging apparatusFUJIFILM CORP·Filed 2020·Granted Jan 31, 2023·0 cites·14 claims
- 3956US7672062B2Projection zoom lens and projection type display deviceFUJINON CORP·Filed 2008·Granted Mar 2, 2010·1 cites·17 claims
- 4056US6043941AImage-forming lens having four lens elementsFUJI PHOTO OPTICAL CO LTD·Filed 1997·Granted Mar 28, 2000·19 cites·9 claims
- 4153US11320635B2Imaging optical system, projection type display device, and imaging apparatusFUJIFILM CORP·Filed 2020·Granted May 3, 2022·0 cites·19 claims
- 4253US6075658AImaging lensFUJI PHOTO OPTICAL CO LTD·Filed 1999·Granted Jun 13, 2000·16 cites·8 claims
- 4353US5933286AImage forming lensFUJI PHOTO OPTICAL CO LTD·Filed 1997·Granted Aug 3, 1999·16 cites·9 claims
- 4452US11796824B2Image forming optical system, projection type display device, and imaging apparatusFUJIFILM CORP·Filed 2021·Granted Oct 24, 2023·0 cites·18 claims
- 4552US9383560B2Zoom lens for projection and projection-type display apparatusFUJIFILM CORP·Filed 2014·Granted Jul 5, 2016·0 cites·20 claims
- 4652US8922903B2Projection zoom lens and projection type display deviceFUJIFILM CORP·Filed 2014·Granted Dec 30, 2014·0 cites·19 claims
- 4752US6989940B2Zoom lens and projection display device which uses sameFUJINON CORP·Filed 2004·Granted Jan 24, 2006·3 cites·12 claims
- 4852US6768595B2Five-group zoom lens and projection display device including itFUJI PHOTO OPTICAL CO LTD·Filed 2003·Granted Jul 27, 2004·3 cites·20 claims
- 4952US5999338AImaging lensFUJI PHOTO OPTICAL CO LTD·Filed 1998·Granted Dec 7, 1999·15 cites·15 claims
- 5051US2024064276A1Image forming optical system, projection type display device, and imaging apparatusFUJIFILM CORP·Filed 2023·Application pending·0 cites
Showing the top 50 of 64 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →