Inventor · disambiguated record
Ichiro Tamai
Also filed as: TAMAI ICHIRO
36 granted patents·13 pending applications·392 citations·filing 1996–2015
97Inventor score
Top patents by PatentIndex Score
49 records- 0191US6638648B2Perpendicular magnetic recording medium and magnetic storage apparatus using the sameHITACHI LTD·Filed 2001·Granted Oct 28, 2003·27 cites·7 claims
- 0290US6221508B1Magnetic recording mediaHITACHI LTD·Filed 1998·Granted Apr 24, 2001·47 cites·8 claims
- 0385US7875373B2Perpendicular magnetic recording medium and magnetic storage apparatus using the sameHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Jan 25, 2011·6 cites·16 claims
- 0485US6403240B1Magnetic recording media and magnetic recording system using the sameHITACHI LTD·Filed 1997·Granted Jun 11, 2002·35 cites·9 claims
- 0583US7556871B2Magnetic recording medium containing first and second recording layers, each layer containing a columnar structureHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Jul 7, 2009·5 cites·18 claims
- 0682US7033686B2Perpendicular magnetic recording medium and method of manufacturing itHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Apr 25, 2006·14 cites·5 claims
- 0782US6709768B2Magnetic recording medium and its manufacturing method and magnetic recording system using such a magnetic recording mediumHITACHI GLOBAL STORAGE TECH·Filed 2002·Granted Mar 23, 2004·13 cites·6 claims
- 0882US6596420B2Magnetic recording media and magnetic recording system using the sameHITACHI LTD·Filed 2002·Granted Jul 22, 2003·12 cites·5 claims
- 0982US5922456ALongitudal magnetic recording medium having a multi-layered underlayer and magnetic storage apparatus using such magnetic recording mediumHITACHI LTD·Filed 1997·Granted Jul 13, 1999·38 cites·31 claims
- 1081US6001447ALongitudinal magnetic recording media and magnetic storage apparatus using the sameHITACHI LTD·Filed 1998·Granted Dec 14, 1999·34 cites·27 claims
- 1180US6916557B2Perpendicular magnetic recording mediaHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Jul 12, 2005·12 cites·8 claims
- 1280US6080476AMagnetic recording medium and magnetic recording system using such a magnetic recording mediumHITACHI LTD·Filed 1998·Granted Jun 27, 2000·32 cites·8 claims
- 1379US8440332B2Perpendicular magnetic recording medium and magnetic storage device using the sameTAMAI ICHIRO·Filed 2009·Granted May 14, 2013·4 cites·16 claims
- 1478US7701667B2Perpendicular magnetic recording medium and magnetic storage apparatus using the sameHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted Apr 20, 2010·3 cites·12 claims
- 1577US8771849B2Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus using the sameNEMOTO HIROAKI·Filed 2008·Granted Jul 8, 2014·3 cites·20 claims
- 1677US6574060B2Magnetic storage apparatusHITACHI LTD·Filed 2001·Granted Jun 3, 2003·9 cites·6 claims
- 1776US8592060B2Perpendicular magnetic recording media having low medium noise and systems using the sameTAMAI ICHIRO·Filed 2010·Granted Nov 26, 2013·4 cites·23 claims
- 1876US6569545B1Magnetic recording medium and a magnetic storage apparatusHITACHI LTD·Filed 1999·Granted May 27, 2003·24 cites·2 claims
- 1975US6177208B1Magnetic recording system and magnetic recording medium used thereforHITACHI LTD·Filed 1999·Granted Jan 23, 2001·24 cites·16 claims
- 2068US7651795B2Perpendicular magnetic recording medium and manufacturing of the sameHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Jan 26, 2010·1 cites·6 claims
- 2166US5919581AMagnetic recording system and magnetic recording medium used thereforHITACHI LTD·Filed 1996·Granted Jul 6, 1999·16 cites·16 claims
- 2265US7050253B2Magnetic recording media and magnetic storage apparatus using the sameHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted May 23, 2006·4 cites·24 claims
- 2364US6924048B2Magnetic recording medium and a magnetic storage apparatusHITACHI LTD·Filed 2003·Granted Aug 2, 2005·4 cites·7 claims
- 2461US7182974B2Magnetic recording medium and its manufacturing method and magnetic recording system using such a magnetic recording mediumHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Feb 27, 2007·3 cites·3 claims
- 2561US2008186627A1Perpendicular magnetic recording medium with granular structured magnetic recording layer, method for producing the same, and magnetic recording apparatusHITACHI GLOBAL STORAGE TECH·Filed 2008·Application pending·0 cites
- 2659US7056604B2Magnetic recording media and magnetic recording system using the sameHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Jun 6, 2006·11 cites·8 claims
- 2756US7625646B2Perpendicular magnetic recording medium and method of manufacturing itHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Dec 1, 2009·0 cites·7 claims
- 2854US7510789B2Perpendicular magnetic recording mediaHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Mar 31, 2009·0 cites·5 claims
- 2954US2006088737A1Perpendicular magnetic recording medium with granular structured magnetic recording layer, method for producing the same, and magnetic recording apparatusHITACHI GLOBAL STORAGE TECH·Filed 2005·Application pending·0 cites
- 3053US2009023016A1Perpendicular magnetic recording mediumTANAHASHI KIWAMU·Filed 2008·Application pending·0 cites
- 3152US7625644B2Perpendicular magnetic recording medium and manufacturing of the sameHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Dec 1, 2009·0 cites·12 claims
- 3252US6881504B2Perpendicular magnetic recording medium and magnetic storage apparatus using the sameHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Apr 19, 2005·1 cites·16 claims
- 3352US6605374B2Magnetic recording medium and magnetic recording system using such a magnetic recording mediumHITACHI LTD·Filed 2002·Granted Aug 12, 2003·3 cites·4 claims
- 3449US9406327B2Granular media with a high-Hk assist layer for microwave-assisted magnetic recordingHGST Netherlands BV·Filed 2013·Granted Aug 2, 2016·0 cites·19 claims
- 3549US9058831B2Perpendicular magnetic recording medium with grain boundary controlling layersTONOOKA SHUN·Filed 2011·Granted Jun 16, 2015·0 cites·23 claims
- 3646US2016125903A1Perpendicular magnetic recording medium having an oxide seed layer and ru alloy intermediate layerHGST Netherlands BV·Filed 2014·Application pending·0 cites
- 3746US2015085401A1Recording medium having recording assistHGST Netherlands BV·Filed 2013·Application pending·0 cites
- 3845US2006076233A1Magnetic recording medium and method for production thereofHITACHI GLOBAL STORAGE TECH·Filed 2005·Application pending·0 cites
- 3945US2015262603A1Perpendicular magnetic recording medium with grain isolation layerHGST Netherlands BV·Filed 2014·Application pending·0 cites
- 4042US2005058854A1Perpendicular magnetic recording medium and manufacturing of the sameHITACHI LTD·Filed 2004·Application pending·0 cites
- 4142US2015294679A1Perpendicular magnetic recording medium with grain boundary controlling layersHGST Netherlands BV·Filed 2015·Application pending·0 cites
- 4239US8703307B2Perpendicular magnetic recording medium and magnetic storage apparatus using the sameHIROTSUNE AKEMI·Filed 2010·Granted Apr 22, 2014·0 cites·14 claims
- 4339US2012044595A1Perpendicular magnetic recording medium (pmrm) and magnetic storage systems using the sameYAHISA YOTSUO·Filed 2010·Application pending·0 cites
- 4438US8705208B2Perpendicular magnetic recording medium (PMRM) and magnetic storage device using the sameNAKAGAWA HIROYUKI·Filed 2010·Granted Apr 22, 2014·0 cites·18 claims
- 4538US6403242B1Magnetic recording medium and magnetic recording system using such a magnetic recording mediumHITACHI LTD·Filed 2000·Granted Jun 11, 2002·2 cites·3 claims
- 4638US2002018920A1Magnetic recording medium and magnetic recording apparatusHITACHI LTD·Filed 2001·Application pending·0 cites
- 4737US2012307395A1PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH AN INVERTED Hk STRUCTURETONOOKA SHUN·Filed 2011·Application pending·0 cites
- 4837US2012099220A1Perpendicular magnetic recording medium (pmrm) and systems thereofTAMAI ICHIRO·Filed 2010·Application pending·0 cites
- 4933US7115329B1Magnetic recording medium and magnetic storage deviceHITACHI GLOBAL STORAGE TECH·Filed 1999·Granted Oct 3, 2006·1 cites·11 claims
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