Inventor
TOMIYAMA FUTOSHI
JP20 patents
⚠️ This page may combine multiple inventors who share the name “TOMIYAMA FUTOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
14 patentsUS6635367B2Oct 21, 2003
Magnetic recording medium
HITACHI LTD58 citations95
US6327112B1Dec 4, 2001
Adjacent track position detectable information storage apparatus
HITACHI LTD22 citations93
US6657805B2Dec 2, 2003
Method of controlling read write operation of a magnetic disk apparatus
HITACHI LTD27 citations92
US6310741B1Oct 30, 2001
Magnetic disk apparatus with data track reassigning function
HITACHI LTD19 citations92
US5723198AMar 3, 1998
Multi-layered magnetic recording medium and magnetic recording system employing the same
HITACHI LTD29 citations92
US5719719AFeb 17, 1998
Magnetic disk drive with sensing current adjustment of MR head
HITACHI LTD26 citations92
US6760172B1Jul 6, 2004
Magnetic disk drive
HITACHI LTD18 citations84
US6515817B1Feb 4, 2003
Magnetic disk drive
HITACHI LTD15 citations84
US6906889B2Jun 14, 2005
Magnetic disk drive
HITACHI LTD5 citations74
US6473254B1Oct 29, 2002
Method and system for compensation of nonlinearity or fluctuation of head-position signal
HITACHI LTD8 citations74
US6404576B1Jun 11, 2002
Method and system for compensation of nonlinearity or fluctuation of head-position signal
HITACHI LTD11 citations74
US6657804B1Dec 2, 2003
Magnetic recording disk drive
HITACHI LTD7 citations73
US7031091B2Apr 18, 2006
Magnetic recording apparatus and method of writing data at low temperature
HITACHI LTD6 citations62
US7057838B2Jun 6, 2006
Magnetic disk device having a write head to write by shifting in a radial direction
HITACHI LTD1 citations52
HITACHI GLOBAL STORAGE TECH
6 patentsUS7443625B2Oct 28, 2008
Magnetic disk drive
HITACHI GLOBAL STORAGE TECH29 citations93
US6909566B1Jun 21, 2005
Magnetic recording/reproducing device
HITACHI GLOBAL STORAGE TECH30 citations92
US6717760B2Apr 6, 2004
Magnetic disk drive
HITACHI GLOBAL STORAGE TECH6 citations74
US7221530B2May 22, 2007
Magnetic head with high reliability of the data protection, magnetic disk apparatus including the magnetic head and the method of recording information on the magnetic disk apparatus without miserasing the previously recorded data
HITACHI GLOBAL STORAGE TECH8 citations73
US6940690B2Sep 6, 2005
Magnetic head with high reliability of the data protection, magnetic disk apparatus including the magnetic head and the method of recording information on the magnetic disk apparatus without miserasing the previously recorded data
HITACHI GLOBAL STORAGE TECH9 citations73
US6879460B2Apr 12, 2005
Magnetic recording disk drive
HITACHI GLOBAL STORAGE TECH4 citations62