Inventor · disambiguated record
Junsaku Nakajima
Also filed as: NAKAJIMA JUNSAKU
36 granted patents·2 pending applications·493 citations·filing 1987–2012
98Inventor score
Top patents by PatentIndex Score
38 records- 0194US6438098B1Optical recording medium, media tracking method and recording/reproducing apparatusSHARP KK·Filed 2000·Granted Aug 20, 2002·43 cites·23 claims
- 0293US6532208B2Optical recording medium having prepits deeper than groovesSHARP KK·Filed 2001·Granted Mar 11, 2003·44 cites·7 claims
- 0390US6317280B1Thermomagnetic recording and reproducing head having a heating head with a width narrower than the magnetic heads, a recording and reproducing device with such a heating head and methods related theretoSHARP KK·Filed 1998·Granted Nov 13, 2001·60 cites·26 claims
- 0489US5656385AMagnetic recording medium and information recording-reproduction method using the sameSHARP KK·Filed 1993·Granted Aug 12, 1997·30 cites·7 claims
- 0587US7050383B2Optical recording medium recorded with information in depth direction, and method and apparatus of reproduction therefromSHARP KK·Filed 2001·Granted May 23, 2006·20 cites·11 claims
- 0687US6760299B1Optical disc having pits of different depth formed therein, optical disc device for reproducing the same, and method of reproductionSHARP KK·Filed 2000·Granted Jul 6, 2004·19 cites·4 claims
- 0787US5452272AMagneto-optical recording and reproducing device having light interrupting forming main robe and side robe light beam portionsSHARP KK·Filed 1993·Granted Sep 19, 1995·41 cites·20 claims
- 0877US6728183B1Optical disk deviceSHARP KK·Filed 2000·Granted Apr 27, 2004·12 cites·21 claims
- 0976US6143436AMagnetic recording medium and information recording-reproduction method using the sameSHARP KK·Filed 1997·Granted Nov 7, 2000·21 cites·18 claims
- 1073US6396775B1Magneto-optical device and recording/reproducing methodSHARP KK·Filed 2000·Granted May 28, 2002·9 cites·18 claims
- 1171US6147939AMagneto-optical recording medium having intermediate layer of in-plane magnetizationSHARP KK·Filed 1998·Granted Nov 14, 2000·19 cites·64 claims
- 1270US7580329B2Optical recording medium recorded with information in depth direction, and method and apparatus of reproduction therefromSHARP KK·Filed 2006·Granted Aug 25, 2009·1 cites·8 claims
- 1369US7072251B2Optical disc having pits of different depth formed therein, optical disc device for reproducing the same, and method of reproductionSHARP KK·Filed 2003·Granted Jul 4, 2006·6 cites·2 claims
- 1468US6261707B1Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording mediumSHARP KK·Filed 1993·Granted Jul 17, 2001·14 cites·26 claims
- 1565US6665235B2Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording mediumSHARP KK·Filed 2002·Granted Dec 16, 2003·7 cites·6 claims
- 1665US5317555AOptical head device utilizing partially overlapping light spots to read information from a readout layerSHARP KK·Filed 1992·Granted May 31, 1994·15 cites·9 claims
- 1763US6272077B1Magneto-optical recording medium having intermediate layer of in plane magnetizationSHARP KK·Filed 2000·Granted Aug 7, 2001·4 cites·12 claims
- 1860US5615182AMagneto-optical disk and the reproducing method thereofSHARP KK·Filed 1995·Granted Mar 25, 1997·12 cites·14 claims
- 1959US5477528AMagneto-optical disk and the reproducing method thereofSHARP KK·Filed 1994·Granted Dec 19, 1995·9 cites·10 claims
- 2058US7113460B2Optical disk having pits of different depths formed therein, optical disk reproducing apparatus for reproducing the optical disk, and method of tracking the optical diskSHARP KK·Filed 2001·Granted Sep 26, 2006·3 cites·20 claims
- 2156US5631096AMagneto optical memory deviceSHARP KK·Filed 1995·Granted May 20, 1997·12 cites·24 claims
- 2255US6487165B1Optical recording mediumSHARP KK·Filed 2000·Granted Nov 26, 2002·2 cites·4 claims
- 2355US5777953AArrangement of magneto-optical recording medium which capable of reproducing an individual bitSHARP KABUSHIKI KAISHIA·Filed 1996·Granted Jul 7, 1998·12 cites·16 claims
- 2454US6212137B1Magneto-optical recording medium by magnetic field modulation with the use of smaller magnetic fieldsSHARP KK·Filed 1999·Granted Apr 3, 2001·10 cites·20 claims
- 2554US5757734AMagneto-optical recording medium and method for reproducing from sameSHARP KK·Filed 1996·Granted May 26, 1998·11 cites·8 claims
- 2654US5707727AMagneto-optical recording mediumSHARP KK·Filed 1995·Granted Jan 13, 1998·15 cites·44 claims
- 2751US2012327755A1Information recording medium, recording/reproducing device, recording/reproducing device control method, recording/reproducing device control program, and computer readable recording mediumARIMOTO TAKASHI·Filed 2012·Application pending·0 cites
- 2846US2012127840A1Information recording medium, recording/reproducing device, recording/reproducing device control method, recording/reproducing device control program, and computer readable recording mediumARIMOTO TAKASHI·Filed 2010·Application pending·0 cites
- 2943US6556517B1Magneto-optical head device having integrated auxiliary lens and magnetic reproducing head and recording and reproducing device using magneto-optical head deviceSHARP KK·Filed 1999·Granted Apr 29, 2003·5 cites·20 claims
- 3043US6483785B1Magneto-optical recording method using the relation of beam diameter and an aperture of converging lensSHARP KK·Filed 2000·Granted Nov 19, 2002·0 cites·7 claims
- 3142US4786551AMagnetic recording mediumKAO CORP·Filed 1987·Granted Nov 22, 1988·10 cites·5 claims
- 3241US5305300AMagneto optical storage device using a multi-layer film of Pt/Co laminated sectionsSHARP KK·Filed 1992·Granted Apr 19, 1994·4 cites·9 claims
- 3340US6042954AMagneto-optical recording mediumSHARP KK·Filed 1997·Granted Mar 28, 2000·7 cites·8 claims
- 3437US5989705AMagneto-optical recording mediumSHARP KK·Filed 1996·Granted Nov 23, 1999·5 cites·9 claims
- 3537US5657299AMagneto-optical recording mediumSHARP KK·Filed 1996·Granted Aug 12, 1997·3 cites·8 claims
- 3637US5293359AMagnetic recording and reproducing apparatus having a ferrimagnetic recording medium, a magnetic head and first and second light sourcesSHARP KK·Filed 1991·Granted Mar 8, 1994·3 cites·4 claims
- 3735US5637394AMagneto-optical recording medium and method of reproducing magneto-optical information using thereofSHARP KK·Filed 1994·Granted Jun 10, 1997·2 cites·13 claims
- 3834US5595805AMagneto-optical recording mediumSHARP KK·Filed 1994·Granted Jan 21, 1997·3 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →