Inventor · disambiguated record
Masaru Muranishi
Also filed as: MURANISHI MASARU
21 granted patents·3 pending applications·384 citations·filing 1993–2012
96Inventor score
Files withHITACHI LTD16HITACHI GLOBAL STORAGE TECH2HAYAKAWA TAKAKO1HITACHI GLOBAL TECH NL BV1ISHIMA YUUJI1
Top patents by PatentIndex Score
24 records- 0194US8248724B2Disk drive and method of re-injecting low density gas in a hermetically sealed disk enclosure of a disk driveHAYAKAWA TAKAKO·Filed 2009·Granted Aug 21, 2012·31 cites·8 claims
- 0290US6771460B2Spindle motor and magnetic disc device using thereof having radial and thrust bearingsHITACHI LTD·Filed 2002·Granted Aug 3, 2004·23 cites·12 claims
- 0385US7545601B2Magnetic disk drive with line contactHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Jun 9, 2009·8 cites·18 claims
- 0485US5481515AOptical information storage medium control apparatusHITACHI LTD·Filed 1993·Granted Jan 2, 1996·38 cites·27 claims
- 0583US8196284B2Manufacturing method of base and manufacturing method of disk drive deviceUEFUNE KOUKI·Filed 2009·Granted Jun 12, 2012·6 cites·4 claims
- 0683US6469866B1Spindle motor and magnetic disc device with hydrodynamic bearingHITACHI LTD·Filed 2000·Granted Oct 22, 2002·16 cites·17 claims
- 0781US8274755B2Magnetic disk unitISHIMA YUUJI·Filed 2007·Granted Sep 25, 2012·10 cites·5 claims
- 0881US6356408B1Magnetic disk apparatus, including spindle motor having air flow passage in hub for pressure balanceHITACHI LTD·Filed 1999·Granted Mar 12, 2002·30 cites·3 claims
- 0978US6304527B1Near-field optical head and manufacturing method thereof and optical recording/readout system using near-field optical headHITACHI LTD·Filed 1999·Granted Oct 16, 2001·71 cites·24 claims
- 1075US6219472B1Optical switch, method of manufacturing same, and optical communication equipment using the sameHITACHI LTD·Filed 1998·Granted Apr 17, 2001·41 cites·15 claims
- 1174US5448536AMagneto-optical recording device having an optical head capable of generating a circularly polarized light beamHITACHI LTD·Filed 1993·Granted Sep 5, 1995·31 cites·28 claims
- 1272US6369981B2Disk drive unit with hydrodynamic fluid bearing unit and disk device with said drive unitHITACHI LTD·Filed 2001·Granted Apr 9, 2002·13 cites·14 claims
- 1369US6680814B2Spindle motor and magnetic disc device with hydrodynamic bearingsHITACHI LTD·Filed 2002·Granted Jan 20, 2004·8 cites·10 claims
- 1463US6487330B2Optical switch, method of manufacturing same, and optical communication equipment using sameHITACHI LTD·Filed 2001·Granted Nov 26, 2002·8 cites·13 claims
- 1562US6243230B1Disk drive unit with hydrodynamic fluid bearing unit and disk device with said drive unitHITACHI LTD·Filed 1999·Granted Jun 5, 2001·19 cites·4 claims
- 1656US7441959B2Bearing mechanism for spindle motor in magnetic disk driveHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Oct 28, 2008·1 cites·20 claims
- 1756US5404009AIntegrated optical information detector for an optical information processing apparatus with a plurality of photo detecting strips and a common bonding padHITACHI LTD·Filed 1993·Granted Apr 4, 1995·10 cites·7 claims
- 1848US7894158B2Magnetic disk apparatusHITACHI GLOBAL TECH NL BV·Filed 2007·Granted Feb 22, 2011·0 cites·1 claims
- 1946US6369980B2Disk drive unit with hydrodynamic fluid bearing unit and disk device with said drive unitHITACHI LTD·Filed 2001·Granted Apr 9, 2002·1 cites·6 claims
- 2044US5508805AInterferometer, optical scanning type tunneling microscope and optical probeHITACHI LTD·Filed 1994·Granted Apr 16, 1996·10 cites·44 claims
- 2143US2002071204A1Magnetic disk apparatusHITACHI LTD·Filed 2002·Application pending·0 cites
- 2241US5781576ASemiconductor laser device and optical disk driveHITACHI LTD·Filed 1996·Granted Jul 14, 1998·9 cites·2 claims
- 2335US2013222947A1Removable cover assembly for a data storage deviceSUGII TAISUKE·Filed 2012·Application pending·0 cites
- 2431US2011013319A1Disk drive with micro-actuator interconnect conditioningSOGA EIJI·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →