Inventor · disambiguated record
Katsuhiro Seo
Also filed as: SEO KATSUHIRO
31 granted patents·5 pending applications·385 citations·filing 1991–2024
96Inventor score
Top patents by PatentIndex Score
36 records- 0195US6312780B1Optical recording mediumSONY CORP·Filed 2000·Granted Nov 6, 2001·81 cites·41 claims
- 0290US6160776AOptical recording medium, and method of manufacturing optical recording mediumSONY CORP·Filed 1998·Granted Dec 12, 2000·62 cites·6 claims
- 0384US5416762AImproved disc cartridge and recording and/or reproducing apparatus having means for positioning a turntable and disc cartridge support structure and means for reducing vibrationsSONY CORP·Filed 1992·Granted May 16, 1995·38 cites·7 claims
- 0482US5414687ADisc recording/reproducing apparatusSONY CORP·Filed 1993·Granted May 9, 1995·29 cites·1 claims
- 0581US11263433B2Substance preparation evaluation systemBECKMAN COULTER INC·Filed 2017·Granted Mar 1, 2022·5 cites·20 claims
- 0681US7800986B2Optical pickup and optical disc apparatusSONY CORP·Filed 2007·Granted Sep 21, 2010·4 cites·16 claims
- 0781US6055218ARecording medium having track formed of land portion and groove portion, and reproducing apparatus thereforSONY CORP·Filed 1997·Granted Apr 25, 2000·36 cites·57 claims
- 0880US8466435B2Fine particle measuring deviceTOISHI MITSURU·Filed 2011·Granted Jun 18, 2013·4 cites·5 claims
- 0980US5742577APrism has a plurality of reflective regions each with a predetermined phase differenceSONY CORP·Filed 1996·Granted Apr 21, 1998·26 cites·9 claims
- 1079US8384045B2Minute particle analyzing device and methodSONY CORP·Filed 2010·Granted Feb 26, 2013·3 cites·7 claims
- 1177US12106588B2Substance preparation evaluation systemBECKMAN COULTER INC·Filed 2024·Granted Oct 1, 2024·0 cites·30 claims
- 1277US7492676B2Optical pickup and optical disc apparatus including the sameSONY CORP·Filed 2007·Granted Feb 17, 2009·3 cites·4 claims
- 1373US11954925B2Substance preparation evaluation systemBECKMAN COULTER INC·Filed 2022·Granted Apr 9, 2024·0 cites·23 claims
- 1469US5428583AMagneto-optical disc recording/reproducing apparatusSONY CORP·Filed 1992·Granted Jun 27, 1995·19 cites·7 claims
- 1565US5329503AMagneto-optical disc recording/reproducing apparatusSONY CORP·Filed 1992·Granted Jul 12, 1994·25 cites·10 claims
- 1664US7778141B2Optical pickup, optical disc device, polarization adjustment plate, and optical deviceSONY CORP·Filed 2007·Granted Aug 17, 2010·3 cites·14 claims
- 1763US8014076B2Variable focal length lens, camera module, and electronic apparatusSONY CORP·Filed 2010·Granted Sep 6, 2011·1 cites·10 claims
- 1861US6246644B1Optical pickup and method for manufacturing optical pickupSONY CORP·Filed 1998·Granted Jun 12, 2001·15 cites·14 claims
- 1957US5563869APrism has a plurality of reflective regions each with a predetermined phase differenceSONY CORP·Filed 1995·Granted Oct 8, 1996·9 cites·5 claims
- 2055US7986593B2Optical integrated device, method for detecting light, optical pickup, and optical disc apparatusSONY CORP·Filed 2009·Granted Jul 26, 2011·0 cites·9 claims
- 2152US7859953B2Optical pickup and optical disc apparatusSONY CORP·Filed 2007·Granted Dec 28, 2010·0 cites·10 claims
- 2252US7336432B2Optical pickup and optical disc deviceSONY CORP·Filed 2005·Granted Feb 26, 2008·0 cites·8 claims
- 2350US7684305B2Optical pickup, optical recording and reproducing apparatus and tracking error signal detecting methodSONY CORPORTION·Filed 2006·Granted Mar 23, 2010·0 cites·14 claims
- 2450US2007280085A1Optical disc device and optical pickupSONY CORP·Filed 2007·Application pending·0 cites
- 2549US8913242B2Fine particle measurement deviceSONY CORP·Filed 2013·Granted Dec 16, 2014·0 cites·6 claims
- 2648US5627810ARecording/reproducing apparatus that forms read and write clock signals with differing frequencies from the servo clock signalsSONY CORP·Filed 1996·Granted May 6, 1997·7 cites·6 claims
- 2748US2007036058A1Method and unit for separating light and optical pickup device and optical recording/playback apparatus based thereonSONY CORP·Filed 2006·Application pending·0 cites
- 2845US5648944ARecording/reproducing apparatus that utilizes the servo clock signals to form read and write clock signals with different frequenciesSONY CORP·Filed 1996·Granted Jul 15, 1997·7 cites·7 claims
- 2944US2005276297A1Optical pickup and optical disk apparatusSONY CORP·Filed 2005·Application pending·0 cites
- 3044US2014370586A1Microchip and microchip-type fine-particle measuring deviceSONY CORP·Filed 2012·Application pending·0 cites
- 3143US5577018APhase changing apparatus and optical pickup apparatus for magneto-optic storage device using sameSONY CORP·Filed 1993·Granted Nov 19, 1996·4 cites·46 claims
- 3240US5249167AOptical pickup apparatus which includes a plate-like element for splitting a returning light beam into different light beams having different focussing pointSONY CORP·Filed 1991·Granted Sep 28, 1993·4 cites·9 claims
- 3337US8169713B2Zoom lens, camera module and electronic apparatusSEO KATSUHIRO·Filed 2010·Granted May 1, 2012·0 cites·20 claims
- 3435US2012243567A1Laser irradiation device and microparticle measuring deviceSEO KATSUHIRO·Filed 2012·Application pending·0 cites
- 3532US8411548B2Optical pickup and optical disc apparatusNEMOTO KAZUHIKO·Filed 2010·Granted Apr 2, 2013·0 cites·10 claims
- 3632US8289826B2Optical pickup and optical disc apparatusNEMOTO KAZUHIKO·Filed 2010·Granted Oct 16, 2012·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →