Inventor
OKAMOTO IWAO
JP47 patents
⚠️ This page may combine multiple inventors who share the name “OKAMOTO IWAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
35 patentsUS6602612B2Aug 5, 2003
Magnetic recording medium and magnetic storage apparatus
FUJITSU LTD71 citations96
US6881496B2Apr 19, 2005
Antiferromagnetically coupled magnetic recording medium possessing three coupled magnetic layers and magnetic storage apparatus
FUJITSU LTD21 citations93
US6551728B1Apr 22, 2003
Magnetic recording medium and magnetic storage apparatus
FUJITSU LTD19 citations93
US7271984B2Sep 18, 2007
Magnetic recording medium having at least two coupled magnetic layers, magnetic storage apparatus and recording method
FUJITSU LTD24 citations92
US6821652B1Nov 23, 2004
Magnetic recording medium and magnetic storage apparatus
FUJITSU LTD32 citations92
US6753101B1Jun 22, 2004
Magnetic recording medium, magnetic storage apparatus, recording method and method of producing magnetic recording medium
FUJITSU LTD23 citations92
US6645646B1Nov 11, 2003
Magnetic recording medium and magnetic storage apparatus
FUJITSU LTD36 citations92
US6562489B2May 13, 2003
Magnetic recording medium and magnetic storage apparatus
FUJITSU LTD32 citations92
US6147488ANov 14, 2000
Measurement method of time dependent magnetic remanence in a recording medium
FUJITSU LTD21 citations92
US6071607AJun 6, 2000
Magnetic recording medium and magnetic disk device
FUJITSU LTD20 citations92
US6020060AFeb 1, 2000
Magnetic recording medium, process for producing the same and magnetic disk device
FUJITSU LTD28 citations92
US5843569ADec 1, 1998
Magnetic recording medium and device
FUJITSU LTD37 citations92
US5774783AJun 30, 1998
Magnetic recording medium
FUJITSU LTD17 citations92
US5523639AJun 4, 1996
Electrostatic actuator having ferroelectrics in which residual dielectric polarization is formed
FUJITSU LTD35 citations92
US6689495B1Feb 10, 2004
Magnetic recording medium and magnetic storage apparatus
FUJITSU LTD45 citations91
US6534205B2Mar 18, 2003
Magnetic storage medium
FUJITSU LTD22 citations90
US6828047B2Dec 7, 2004
Magnetic recording medium and magnetic storage apparatus
FUJITSU LTD14 citations84
US6534204B1Mar 18, 2003
Magnetic storage medium
FUJITSU LTD18 citations84
US6506508B1Jan 14, 2003
Magnetic recording medium, method of production and magnetic storage apparatus
FUJITSU LTD13 citations84
US7625643B2Dec 1, 2009
Magnetic recording medium, magnetic storage apparatus and recording method
FUJITSU LTD13 citations83
US6562481B1May 13, 2003
Magnetic storage medium
FUJITSU LTD14 citations82
US6740383B2May 25, 2004
Magnetic recording medium possessing a ratio of Hc(perpendicular) to Hc(horizontal) that is not more than 0.22 and magnetic recording disk device
FUJITSU LTD7 citations74
US6677051B1Jan 13, 2004
Magnetic recording medium with dual magnetic layers having specific composition requirements and a magnetic storage apparatus
FUJITSU LTD11 citations74
US6613460B1Sep 2, 2003
Magnetic recording medium and magnetic storage apparatus
FUJITSU LTD11 citations74
US6129981AOct 10, 2000
Magnetic recording medium and magnetic recording disk device
FUJITSU LTD12 citations74
US5645898AJul 8, 1997
Method for manufacturing a magnetic recording member
FUJITSU LTD8 citations74
US7079340B2Jul 18, 2006
Apparatus and method of measuring write magnetic field of recording head
FUJITSU LTD7 citations73
US6541104B2Apr 1, 2003
Magnetic recording medium and a magnetic recording device
FUJITSU LTD7 citations73
US5900323AMay 4, 1999
Magnetic recording medium and magnetic recording drive
FUJITSU LTD13 citations73
US6905781B2Jun 14, 2005
Magnetic recording medium with Cr<110> preferred growth along a predetermined direction, method of producing the same and magnetic storage apparatus
FUJITSU LTD2 citations63
US7435489B2Oct 14, 2008
Magnetic recording medium, magnetic storage apparatus and recording method
FUJITSU LTD5 citations62
US6689496B1Feb 10, 2004
Magnetic recording medium, method of producing magnetic recording medium, and magnetic storage apparatus
FUJITSU LTD5 citations60
US7115330B2Oct 3, 2006
Magnetic recording medium with CR <110> preferred growth along a predetermined direction, method of producing the same and magnetic storage apparatus
FUJITSU LTD0 citations52
US5986836ANov 16, 1999
Magnetic recording method and device
FUJITSU LTD1 citations52
USRE38587ESep 14, 2004
Magnetic recording medium
FUJITSU LTD1 citations51
WD MEDIA LLC
3 patentsUS9042053B1May 26, 2015
Thermally stabilized perpendicular magnetic recording medium
WD MEDIA LLC1 citations52
US9548073B1Jan 17, 2017
Systems and methods for providing high performance soft magnetic underlayers for magnetic recording media
WD MEDIA LLC0 citations50
US9431045B1Aug 30, 2016
Magnetic seed layer used with an unbalanced soft underlayer
WD MEDIA LLC1 citations49