Inventor · disambiguated record
Toshiaki Katsuma
Also filed as: KATSUMA TOSHIAKI
40 granted patents·12 pending applications·326 citations·filing 1988–2015
97Inventor score
Top patents by PatentIndex Score
52 records- 0193US9176304B2Imaging lensFUJIFILM CORP·Filed 2015·Granted Nov 3, 2015·9 cites·2 claims
- 0292US9030764B2Imaging lens and imaging apparatusFUJIFILM CORP·Filed 2014·Granted May 12, 2015·11 cites·17 claims
- 0392US8902516B2Imaging lens and imaging apparatusFUJIFILM CORP·Filed 2014·Granted Dec 2, 2014·16 cites·22 claims
- 0490US9170404B2Imaging lensFUJIFILM CORP·Filed 2015·Granted Oct 27, 2015·6 cites·3 claims
- 0590US6166854ADiffraction type filter having an aberration correction function and wave length selectivityFUJI PHOTO OPTICAL CO LTD·Filed 1998·Granted Dec 26, 2000·66 cites·20 claims
- 0684US9019634B2Imaging lens and imaging apparatusFUJIFILM CORP·Filed 2014·Granted Apr 28, 2015·6 cites·16 claims
- 0784US6646817B2Objective lens for optical recording media and optical pickup apparatus using the sameFUJI PHOTO OPTICAL CO LTD·Filed 2001·Granted Nov 11, 2003·18 cites·10 claims
- 0882US6498689B2Objective lens for optical recording media and optical pickup apparatus using the sameFUJI PHOTO OPTICAL CO LTD·Filed 2001·Granted Dec 24, 2002·16 cites·18 claims
- 0981US9036269B2Imaging lens and imaging apparatusFUJIFILM CORP·Filed 2013·Granted May 19, 2015·4 cites·19 claims
- 1081US6545821B2Diffraction type lens and optical pickup apparatus using the sameFUJI PHOTO OPTICAL CO LTD·Filed 2001·Granted Apr 8, 2003·24 cites·6 claims
- 1177US7613098B2Objective optical system for optical recording media and optical pickup device using itFUJINON CORP·Filed 2005·Granted Nov 3, 2009·3 cites·4 claims
- 1275US7443779B2Objective optical system for optical recording media and optical pickup device using itFUJINON CORP·Filed 2004·Granted Oct 28, 2008·10 cites·20 claims
- 1373US6084710ADiffraction type filter having a wave length selectivityFUJI PHOTO OPTICAL CO LTD·Filed 1998·Granted Jul 4, 2000·25 cites·5 claims
- 1472US6781771B2Objective lens for optical recording medium and optical pickup device using itFUJI PHOTO OPTICAL CO LTD·Filed 2003·Granted Aug 24, 2004·9 cites·32 claims
- 1571US7589914B2Molded lensFUJINON CORP·Filed 2007·Granted Sep 15, 2009·1 cites·24 claims
- 1669US8009544B2Objective lens, optical pickup device having the same, and recording and/or reproducing apparatus for optical recording medium, equipped with the optical pickup deviceFUJINON CORP·Filed 2008·Granted Aug 30, 2011·1 cites·13 claims
- 1769US7995290B2Objective lens, optical pickup device, and optical recording/reproducing apparatusFUJINON CORP·Filed 2009·Granted Aug 9, 2011·1 cites·20 claims
- 1867US7502299B2Objective optical system and optical pickup device using itFUJINON CORP·Filed 2004·Granted Mar 10, 2009·6 cites·19 claims
- 1967US7072272B2Diffraction type optical pickup lens and optical pickup apparatus using the sameFUJINON CORP·Filed 2002·Granted Jul 4, 2006·7 cites·10 claims
- 2064US7457223B2Objective lens for optical recording media and optical pickup device using itFUJINON CORP·Filed 2004·Granted Nov 25, 2008·5 cites·16 claims
- 2163US7220064B2Coupling optical system for optical communicationsFUJINON CORP·Filed 2006·Granted May 22, 2007·3 cites·3 claims
- 2263US6542314B2Objective lens for optical recording media and optical pickup apparatus using the sameFUJI PHOTO OPTICAL CO LTD·Filed 2001·Granted Apr 1, 2003·6 cites·5 claims
- 2357US7580601B2Anamorphic aspherical beam focusing lensFUJINON CORP·Filed 2004·Granted Aug 25, 2009·5 cites·14 claims
- 2456US6094308ADiffraction type filter having a wavelength selectivityFUJI PHOTO OPTICAL CO LTD·Filed 1998·Granted Jul 25, 2000·12 cites·5 claims
- 2556US2009296227A1Molded lensKATSUMA TOSHIAKI·Filed 2009·Application pending·0 cites
- 2654US7298687B2Optical recording media objective lens and optical pickup device using itFUJINON CORP·Filed 2004·Granted Nov 20, 2007·2 cites·16 claims
- 2754US7286463B2Objective lens and optical pickup device using itFUJINON CORP·Filed 2004·Granted Oct 23, 2007·2 cites·20 claims
- 2853US6552851B2Achromatic beam shaping prismFUJI PHOTO OPTICAL CO LTD·Filed 2001·Granted Apr 22, 2003·3 cites·1 claims
- 2951US2015212299A1Imaging lensFUJIFILM CORP·Filed 2015·Application pending·0 cites
- 3048US5680256ALens for reading out optical recording mediumFUJI PHOTO OPTICAL CO LTD·Filed 1996·Granted Oct 21, 1997·8 cites·3 claims
- 3148US2007025204A1Objective optical system for optical recording media and optical pickup device using itFUJINON CORP·Filed 2006·Application pending·0 cites
- 3247US8345356B2Objective lens, optical pickup device, and optical recording/reproducing apparatusFUJINON CORP·Filed 2009·Granted Jan 1, 2013·0 cites·10 claims
- 3347US8064319B2Objective lens, optical pickup device having the same, and recording and/or reproducing apparatus for optical recording medium, equipped with the optical pickup deviceKATSUMA TOSHIAKI·Filed 2008·Granted Nov 22, 2011·0 cites·8 claims
- 3447US6466536B1Objective lens for high-density optical recording mediumFUJI PHOTO OPTICAL CO LTD·Filed 1999·Granted Oct 15, 2002·7 cites·4 claims
- 3547US5600493AFinite conjugate lens systemFUJI PHOTO OPTICAL CO LTD·Filed 1994·Granted Feb 4, 1997·12 cites·6 claims
- 3646US2006109773A1Objective optical system for optical recording media and optical pickup device using itFUJINON CORP·Filed 2005·Application pending·0 cites
- 3746US2006077861A1Objective optical system for optical recording media, optical pickup optical system, and optical pickup device using the optical pickup optical systemFUJINON CORP·Filed 2005·Application pending·0 cites
- 3846US2006077794A1Objective optical system for optical recording media and optical pickup device using the objective optical systemFUJINON CORP·Filed 2005·Application pending·0 cites
- 3946US2009129242A1Objective lens, optical pickup device having the same, and recording and/or reproducing apparatus for optical recording medium, equipped with the optical pickup deviceKATSUMA TOSHIAKI·Filed 2008·Application pending·0 cites
- 4045US7417806B2Lens with reference mounting surfaceFUJINON CORP·Filed 2006·Granted Aug 26, 2008·0 cites·6 claims
- 4145US5889749AOptical pickup apparatusFUJI PHOTO OPTICAL CO LTD·Filed 1997·Granted Mar 30, 1999·7 cites·3 claims
- 4245US2006077795A1Objective optical system for optical recording media and optical pickup device using itFUJINON CORP·Filed 2005·Application pending·0 cites
- 4345US2005259554A1Objective optical system and optical pickup device using itFUJINON CORP·Filed 2005·Application pending·0 cites
- 4444US2011080646A1Molded lensKATSUMA TOSHIAKI·Filed 2010·Application pending·0 cites
- 4543US7680014B2Objective optical system and optical pickup device using itFUJINON CORP·Filed 2004·Granted Mar 16, 2010·0 cites·33 claims
- 4642US7266070B2Objective lens for different optical recording media and an optical pickup device utilizing itFUJINON CORP·Filed 2004·Granted Sep 4, 2007·0 cites·10 claims
- 4742US5661607ALens for reading out optical recording mediumFUJI PHOTO OPTICAL CO LTD·Filed 1996·Granted Aug 26, 1997·5 cites·3 claims
- 4842US4953958AVariable magnification duplicator lens systemFUJI PHOTO OPTICAL CO LTD·Filed 1988·Granted Sep 4, 1990·10 cites·5 claims
- 4941US6970412B2Diffraction type lens which converges two wavelengths of lightFUJINON CORP·Filed 2001·Granted Nov 29, 2005·0 cites·7 claims
- 5041US2004184385A1Aperture limiting element and optical pickup device utilizing itFiled 2004·Application pending·0 cites
Showing the top 50 of 52 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →