Inventor
MIYAMOTO NORIFUMI
JP20 patents
⚠️ This page may combine multiple inventors who share the name “MIYAMOTO NORIFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
10 patentsUS4775967AOct 4, 1988
Beam spot control device using a thin micro lens with an actuator
HITACHI LTD55 citations96
US5461517AOct 24, 1995
Magneto-resistance effect type of recording/reproducing head
HITACHI LTD27 citations92
US5177717AJan 5, 1993
Optical memory medium and its information recording and erasing method and apparatus
HITACHI LTD32 citations92
US4937808AJun 26, 1990
Intergrated optical head with flexible substrate portion
HITACHI LTD40 citations92
US4811328AMar 7, 1989
Optical recording and reproducing device
HITACHI LTD30 citations92
US4773060ASep 20, 1988
Optical information recording device
HITACHI LTD44 citations92
US6903906B2Jun 7, 2005
Magnetic head with a lamination stack to control the magnetic domain
HITACHI LTD17 citations83
US4718053AJan 5, 1988
Optical information apparatus and method of recording and erasing information
HITACHI LTD23 citations81
US4862440AAug 29, 1989
Optical head with optical beam control using acoustic wave device
HITACHI LTD12 citations74
US7230803B2Jun 12, 2007
Magnetic head with magnetic domain control structure having anti-ferromagnetic layer and plural magnetic layers
HITACHI LTD4 citations62
HITACHI GLOBAL STORAGE TECH
5 patentsUS7330324B2Feb 12, 2008
Magnetic disk drive having a function for using a thermal protrusion amount for flying height management and an inspection device having such a function
HITACHI GLOBAL STORAGE TECH20 citations92
US7518814B2Apr 14, 2009
Magnetic head tester and method of manufacturing magnetic disk drive
HITACHI GLOBAL STORAGE TECH6 citations62
US7206175B2Apr 17, 2007
Magnetoresistive head having defined relationships between the tract width and magnetization film thickness product to permit no hysteresis in the transfer curve
HITACHI GLOBAL STORAGE TECH3 citations62
US7292416B2Nov 6, 2007
CPP magneto resistive head with decreased variation in asymmetry and output
HITACHI GLOBAL STORAGE TECH0 citations51
US7031123B2Apr 18, 2006
Magneto resistive head and magnetic recording apparatus
HITACHI GLOBAL STORAGE TECH0 citations51