Inventor
TAMAI ICHIRO
JP36 patents
⚠️ This page may combine multiple inventors who share the name “TAMAI ICHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
14 patentsUS6221508B1Apr 24, 2001
Magnetic recording media
HITACHI LTD47 citations96
US6569545B1May 27, 2003
Magnetic recording medium and a magnetic storage apparatus
HITACHI LTD24 citations93
US6001447ADec 14, 1999
Longitudinal magnetic recording media and magnetic storage apparatus using the same
HITACHI LTD34 citations93
US5922456AJul 13, 1999
Longitudal magnetic recording medium having a multi-layered underlayer and magnetic storage apparatus using such magnetic recording medium
HITACHI LTD38 citations93
US6638648B2Oct 28, 2003
Perpendicular magnetic recording medium and magnetic storage apparatus using the same
HITACHI LTD27 citations92
US6403240B1Jun 11, 2002
Magnetic recording media and magnetic recording system using the same
HITACHI LTD35 citations92
US6177208B1Jan 23, 2001
Magnetic recording system and magnetic recording medium used therefor
HITACHI LTD24 citations92
US6080476AJun 27, 2000
Magnetic recording medium and magnetic recording system using such a magnetic recording medium
HITACHI LTD32 citations92
US5919581AJul 6, 1999
Magnetic recording system and magnetic recording medium used therefor
HITACHI LTD16 citations81
US6574060B2Jun 3, 2003
Magnetic storage apparatus
HITACHI LTD9 citations74
US6596420B2Jul 22, 2003
Magnetic recording media and magnetic recording system using the same
HITACHI LTD12 citations73
US6924048B2Aug 2, 2005
Magnetic recording medium and a magnetic storage apparatus
HITACHI LTD4 citations63
US6605374B2Aug 12, 2003
Magnetic recording medium and magnetic recording system using such a magnetic recording medium
HITACHI LTD3 citations63
US6403242B1Jun 11, 2002
Magnetic recording medium and magnetic recording system using such a magnetic recording medium
HITACHI LTD2 citations63
HITACHI GLOBAL STORAGE TECH
14 patentsUS7056604B2Jun 6, 2006
Magnetic recording media and magnetic recording system using the same
HITACHI GLOBAL STORAGE TECH11 citations84
US6916557B2Jul 12, 2005
Perpendicular magnetic recording media
HITACHI GLOBAL STORAGE TECH12 citations84
US6709768B2Mar 23, 2004
Magnetic recording medium and its manufacturing method and magnetic recording system using such a magnetic recording medium
HITACHI GLOBAL STORAGE TECH13 citations84
US7033686B2Apr 25, 2006
Perpendicular magnetic recording medium and method of manufacturing it
HITACHI GLOBAL STORAGE TECH14 citations83
US7701667B2Apr 20, 2010
Perpendicular magnetic recording medium and magnetic storage apparatus using the same
HITACHI GLOBAL STORAGE TECH3 citations63
US7556871B2Jul 7, 2009
Magnetic recording medium containing first and second recording layers, each layer containing a columnar structure
HITACHI GLOBAL STORAGE TECH5 citations63
US7182974B2Feb 27, 2007
Magnetic recording medium and its manufacturing method and magnetic recording system using such a magnetic recording medium
HITACHI GLOBAL STORAGE TECH3 citations63
US7050253B2May 23, 2006
Magnetic recording media and magnetic storage apparatus using the same
HITACHI GLOBAL STORAGE TECH4 citations63
US7651795B2Jan 26, 2010
Perpendicular magnetic recording medium and manufacturing of the same
HITACHI GLOBAL STORAGE TECH1 citations52
US7625644B2Dec 1, 2009
Perpendicular magnetic recording medium and manufacturing of the same
HITACHI GLOBAL STORAGE TECH0 citations52
US7510789B2Mar 31, 2009
Perpendicular magnetic recording media
HITACHI GLOBAL STORAGE TECH0 citations52
US7115329B1Oct 3, 2006
Magnetic recording medium and magnetic storage device
HITACHI GLOBAL STORAGE TECH1 citations52
US6881504B2Apr 19, 2005
Perpendicular magnetic recording medium and magnetic storage apparatus using the same
HITACHI GLOBAL STORAGE TECH1 citations52
US7625646B2Dec 1, 2009
Perpendicular magnetic recording medium and method of manufacturing it
HITACHI GLOBAL STORAGE TECH0 citations51