Inventor
YOSHIDA KAZUETSU
JP38 patents
⚠️ This page may combine multiple inventors who share the name “YOSHIDA KAZUETSU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
35 patentsUS6686070B1Feb 3, 2004
Perpendicular magnetic recording media, magnetic recording apparatus
HITACHI LTD95 citations98
US6183893B1Feb 6, 2001
Perpendicular magnetic recording medium and magnetic storage apparatus using the same
HITACHI LTD123 citations98
US6716516B2Apr 6, 2004
Magnetic recording medium and magnetic recording apparatus using the same
HITACHI LTD30 citations96
US6447936B1Sep 10, 2002
Magnetic recording medium and magnetic recording apparatus using the same
HITACHI LTD41 citations96
US4722869AFeb 2, 1988
Magnetic recording medium
HITACHI LTD58 citations96
US6212024B1Apr 3, 2001
Recording equalizer and magnetic recording/reproducing apparatus performing write timing compensation
HITACHI LTD44 citations95
US4174373ANov 13, 1979
Process for removing sulfur oxides and nitrogen oxides from flue gases
HITACHI LTD91 citations94
US6528149B2Mar 4, 2003
Perpendicular-magnetic recording media and magnetic recording apparatus
HITACHI LTD14 citations93
US6403203B2Jun 11, 2002
Magnetic recording medium and magnetic recording apparatus using the same
HITACHI LTD22 citations93
US5759681AJun 2, 1998
Magnetic recording medium and magnetic recording system using the same
HITACHI LTD53 citations93
US5723198AMar 3, 1998
Multi-layered magnetic recording medium and magnetic recording system employing the same
HITACHI LTD29 citations92
US4840844AJun 20, 1989
Magnetic recording medium
HITACHI LTD38 citations92
US4743491AMay 10, 1988
Perpendicular magnetic recording medium and fabrication method therefor
HITACHI LTD46 citations92
US6641901B2Nov 4, 2003
Perpendicular-magnetic recording media and magnetic recording apparatus
HITACHI LTD10 citations74
US6607849B2Aug 19, 2003
Magnetic recording medium and magnetic recording apparatus using the same
HITACHI LTD3 citations74
US6592976B2Jul 15, 2003
Magnetic recording medium and magnetic recording apparatus using the same
HITACHI LTD6 citations74
US6534164B2Mar 18, 2003
Magnetic recording medium and magnetic recording apparatus using the same
HITACHI LTD4 citations74
US6349008B1Feb 19, 2002
Magnetic recording media, magnetic heads and magnetic read-write apparatus using the same
HITACHI LTD11 citations74
US6288981B1Sep 11, 2001
Magneto-optical recording device using magneto-resistive head
HITACHI LTD8 citations74
US5875082AFeb 23, 1999
Magnetic recording media, magnetic heads and magnetic read-write apparatus using the same
HITACHI LTD12 citations74
US4707756ANov 17, 1987
Perpendicular magnetic recording medium
HITACHI LTD12 citations74
US6728051B2Apr 27, 2004
Recording equalizer and magnetic recording/reproducing apparatus using the equalizer
HITACHI LTD4 citations73
US6456448B1Sep 24, 2002
Magnetic recording system including magnetic recording medium having three-dimensional random orientation of axis of easy magnetization
HITACHI LTD6 citations73
US6356402B2Mar 12, 2002
Recording equalizer and magnetic recording/reproducing apparatus using the equalizer
HITACHI LTD8 citations73
US5244751ASep 14, 1993
Perpendicular magnetic recording medium, its fabrication method and read-write machine using it
HITACHI LTD15 citations73
US4792497ADec 20, 1988
Magnetic recording media for longitudinal recording
HITACHI LTD10 citations71
US6852398B2Feb 8, 2005
Perpendicular-magnetic recording media and magnetic recording apparatus
HITACHI LTD4 citations63
US5068158ANov 26, 1991
Magnetic recording medium and process for preparing the same
HITACHI LTD4 citations63
US6671116B2Dec 30, 2003
Magnetic recording system including magnetic recording medium having three-dimensional random orientation of axis of easy magnetization
HITACHI LTD4 citations62
US6549355B2Apr 15, 2003
Recording equalizer and magnetic recording/reproducing apparatus using the equalizer
HITACHI LTD1 citations62
US6487031B2Nov 26, 2002
Recording equalizer and magnetic recording/reproducing apparatus using the equalizer
HITACHI LTD1 citations62
US4939045AJul 3, 1990
Magnetic recording medium
HITACHI LTD5 citations62
US5073460ADec 17, 1991
Magnetic recording medium and process for producing the same
HITACHI LTD2 citations60
US6778471B1Aug 17, 2004
Magnetic recording device
HITACHI LTD1 citations52
US6572988B1Jun 3, 2003
Magnetic recording medium and magnetic recording apparatus
HITACHI LTD0 citations52