Inventor · disambiguated record
Hideki Zaitsu
Also filed as: ZAITSU HIDEKI
23 granted patents·2 pending applications·320 citations·filing 1999–2024
96Inventor score
Files withHITACHI GLOBAL STORAGE TECH8HITACHI LTD6HITACHI GLOBAL STORAGE TECH NL4HGST Netherlands BV2MOCHIZUKI MASAFUMI1
Top patents by PatentIndex Score
25 records- 0196US7508619B2Magnetic head and magnetic disc driveHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted Mar 24, 2009·40 cites·12 claims
- 0294US7920359B2Magnetic recording apparatus with correlated main magnetic pole-to-shields spacing and main magnetic pole-to-medium layers spacingHITACHI GLOBAL STORAGE TECH NL·Filed 2008·Granted Apr 5, 2011·21 cites·10 claims
- 0394US7646564B2Perpendicular magnetic recording head for high frequency driveHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Jan 12, 2010·27 cites·4 claims
- 0492US8797672B2Dynamic track pitch control for shingled magnetic recording (SMR)TANABE HIROYASU·Filed 2012·Granted Aug 5, 2014·23 cites·15 claims
- 0591US10748567B1Data storage device aborting write operation based on accumulated track squeeze metric for adjacent data trackWESTERN DIGITAL TECHNOLOGIES INC·Filed 2019·Granted Aug 18, 2020·17 cites·20 claims
- 0690US6909566B1Magnetic recording/reproducing deviceHITACHI GLOBAL STORAGE TECH·Filed 2000·Granted Jun 21, 2005·30 cites·3 claims
- 0789US7245447B2Magnetic read/write apparatus having a write inhibit slice setting circuitHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Jul 17, 2007·26 cites·3 claims
- 0886US8018672B2Magnetic recording device and magnetic recording method thereofHITACHI GLOBAL STORAGE TECH NL·Filed 2009·Granted Sep 13, 2011·6 cites·14 claims
- 0985US6635367B2Magnetic recording mediumHITACHI LTD·Filed 2001·Granted Oct 21, 2003·58 cites·17 claims
- 1084US6760172B1Magnetic disk driveHITACHI LTD·Filed 2000·Granted Jul 6, 2004·18 cites·14 claims
- 1180US6404576B1Method and system for compensation of nonlinearity or fluctuation of head-position signalHITACHI LTD·Filed 2000·Granted Jun 11, 2002·11 cites·4 claims
- 1279US7969678B2Magnetic disk drive having assisted recording and methods of recording data theretoHITACHI GLOBAL STORAGE TECH NL·Filed 2009·Granted Jun 28, 2011·3 cites·20 claims
- 1377US9025420B1Self-controlled laser pulsing for thermally assisted recordingHGST Netherlands BV·Filed 2013·Granted May 5, 2015·4 cites·19 claims
- 1477US8027113B2Magnetic read/write device preventing malfunction due to reversal in polarityHITACHI GLOBAL STORAGE TECH NL·Filed 2005·Granted Sep 27, 2011·3 cites·18 claims
- 1575US6473254B1Method and system for compensation of nonlinearity or fluctuation of head-position signalHITACHI LTD·Filed 2000·Granted Oct 29, 2002·8 cites·13 claims
- 1671US6717760B2Magnetic disk driveHITACHI GLOBAL STORAGE TECH·Filed 2002·Granted Apr 6, 2004·6 cites·10 claims
- 1768US8248893B2Energy-assisted magnetic-recording head having a magnetic-recording assistance element disposed to lower magnetic-recording field for reversing magnetization in a magnetic-recording diskMOCHIZUKI MASAFUMI·Filed 2009·Granted Aug 21, 2012·1 cites·16 claims
- 1867US7031091B2Magnetic recording apparatus and method of writing data at low temperatureHITACHI LTD·Filed 2003·Granted Apr 18, 2006·6 cites·15 claims
- 1964US12431161B1Data storage device with track pitch determination for mitigating effects of servo pattern distortionWESTERN DIGITAL TECH INC·Filed 2024·Granted Sep 30, 2025·0 cites·21 claims
- 2064US6879460B2Magnetic recording disk driveHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Apr 12, 2005·4 cites·4 claims
- 2161US8169729B2Magnetic recording/reproducing using a patterned mediumZAITSU HIDEKI·Filed 2009·Granted May 1, 2012·1 cites·18 claims
- 2249US6657804B1Magnetic recording disk driveHITACHI LTD·Filed 1999·Granted Dec 2, 2003·7 cites·6 claims
- 2347US7636212B2Magnetic disk drive with control of sense current of magnetic headHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Dec 22, 2009·0 cites·12 claims
- 2444US2015109700A1Shingled magnetic recording system with adaptive write buffer areaHGST Netherlands BV·Filed 2013·Application pending·0 cites
- 2543US2006066971A1System and method for ameliorating the effects of adjacent track erasure in magnetic data storage deviceHITACHI GLOBAL STORAGE TECH·Filed 2004·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Hideki Zaitsu files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →