Inventor
OHURA MASAKI
JP30 patents
Patents
30 patentsUS5202810AApr 13, 1993
Magnetic disk having an improved surface configuration
HITACHI LTD76 citations96
US5147732ASep 15, 1992
Longitudinal magnetic recording media and magnetic memory units
HITACHI LTD96 citations96
US5143794ASep 1, 1992
Magnetic recording media for longitudinal recording, process for producing the same and magnetic memory apparatus
HITACHI LTD49 citations96
US4833020AMay 23, 1989
Magnetic recording medium
HITACHI LTD77 citations96
US6057021AMay 2, 2000
Magnetic recording media and magnetic recording system using the same
HITACHI LTD42 citations95
US5750230AMay 12, 1998
Magnetic recording media and magnetic recording system using the same
HITACHI LTD44 citations95
US5236791AAug 17, 1993
Magnetic recording medium and magnetic storage
HITACHI LTD58 citations95
US6335103B1Jan 1, 2002
Magnetic recording media for longitudinal recording
HITACHI LTD21 citations92
US6303205B1Oct 16, 2001
Magnetic disk including protective layer having surface with protrusions, and substrate therefor
HITACHI LTD24 citations92
US5665478ASep 9, 1997
Magnetic recording media for longitudinal recording
HITACHI LTD32 citations92
US5504646AApr 2, 1996
Magnetic disk including protective layer having surface with protusions and magnetic disk apparatus including the magnetic disk
HITACHI LTD29 citations92
US5500296AMar 19, 1996
Magnetic recording medium, process for producing magnetic recording medium, apparatus for producing magnetic recording medium, and magnetic recording apparatus
HITACHI LTD25 citations92
US5353182AOct 4, 1994
Magnetic disk unit having magnetic disks and a magnetic head with a head slider which is in contact with surfaces of the magnetic disk
HITACHI LTD31 citations92
US4883711ANov 28, 1989
Magnetic recording medium
HITACHI LTD30 citations92
US5411630AMay 2, 1995
Magnetic disk manufacturing method
HITACHI LTD29 citations91
US4734802AMar 29, 1988
Film magnetic head slider having a contacting portion containing zirconia and carbon
HITACHI LTD29 citations91
US4939614AJul 3, 1990
Magnetic disk medium with circumferentially textured surfaces and varied surface roughness and method of producing the same
HITACHI LTD33 citations90
US4556925ADec 3, 1985
Magnetoresistive head
HITACHI LTD45 citations90
US5285343AFeb 8, 1994
Magnetic disk with surface protective layer having convex portions and magnetic disk apparatus including such a magnetic disk
HITACHI LTD26 citations89
US6627253B2Sep 30, 2003
Magnetic recording media for longitudinal recording, process for producing the same and magnetic memory apparatus
HITACHI LTD16 citations84
US5280401AJan 18, 1994
Magnetic recording medium, method for producing same and magnetic recording apparatus
HITACHI LTD11 citations74
US4636901AJan 13, 1987
Thin film magnetic head having magnetic layers of different thickness and manufacturing method therefor
HITACHI LTD10 citations74
US5930073AJul 27, 1999
Magnetic disk including protective layer having surface with magnetic disk including protrusions, and magnetic disk apparatus including the magnetic disk
HITACHI LTD9 citations73
US4841402AJun 20, 1989
Thin film magnetic head and method of manufacture
HITACHI LTD14 citations73
US5656349AAug 12, 1997
Magnetic disk, method of manufacturing the same and magnetic disk apparatus including the magnetic disk
HITACHI LTD12 citations72
US4639803AJan 27, 1987
Thin film magnetic head slider
HITACHI LTD11 citations72
US5272581ADec 21, 1993
Disk-type recording medium and storage apparatus
HITACHI LTD19 citations70
US4939045AJul 3, 1990
Magnetic recording medium
HITACHI LTD5 citations62
USRE35490EApr 8, 1997
Thin film magnetic head having magnetic layers of different thickness and manufacturing method therefor
HITACHI LTD1 citations52
US5158833AOct 27, 1992
Magnetic recording medium
HITACHI LTD1 citations47