Inventor · disambiguated record
Chiaki Ishikawa
Also filed as: ISHIKAWA CHIAKI
21 granted patents·363 citations·filing 1994–2008
95Inventor score
Top patents by PatentIndex Score
21 records- 0197US6243288B1Giant magnetoresistive sensor, thin-film read/write head and magnetic recording apparatus using the sensorHITACHI LTD·Filed 2000·Granted Jun 5, 2001·138 cites·8 claims
- 0294US7158351B2Magnetic recording and reproducing head restraining a side readingHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Jan 2, 2007·18 cites·4 claims
- 0394US5850326ANarrow track thin film magnetic head suitable for high density recording and reproducing operations and fabrication method thereof wherein an air bearing surface has at least one groove containing a non-magnetic electrically conductive layerHITACHI LTD·Filed 1994·Granted Dec 15, 1998·45 cites·77 claims
- 0492US6967823B2Magnetic recording headHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Nov 22, 2005·32 cites·13 claims
- 0591US6456466B1Magnetic head with shield layer having discontinuous multi-layer or mixed layer and magnetic recording apparatus utilizing the magnetic headHITACHI LTD·Filed 2000·Granted Sep 24, 2002·29 cites·14 claims
- 0687US6839200B2Combination perpendicular magnetic head having shield material formed at both ends of an upper pole of a write elementHITACHI LTD·Filed 2003·Granted Jan 4, 2005·12 cites·2 claims
- 0787US6538844B2Method of fabricating a magnetic head by focused ion beam etchingHITACHI LTD·Filed 2002·Granted Mar 25, 2003·13 cites·5 claims
- 0884US6396734B2Giant magnetoresistive sensor, thin-film read/write head and magnetic recording apparatus using the sensorHITACHI LTD·Filed 2001·Granted May 28, 2002·27 cites·4 claims
- 0976US8370643B2Cryptographic module selecting device and programTOSHIBA SOLUTIONS CORP·Filed 2008·Granted Feb 5, 2013·8 cites·9 claims
- 1076US6643105B2Magnetic head having magnetic shield layersHITACHI LTD·Filed 2002·Granted Nov 4, 2003·9 cites·2 claims
- 1170US6307707B1Narrow track thin film head including magnetic poles machined by focused ion beam etchingHITACHI LTD·Filed 2000·Granted Oct 23, 2001·4 cites·5 claims
- 1270US6278578B1Narrow track thin film head having a focused ion beam etched air bearing surfaceHITACHI LTD·Filed 2000·Granted Aug 21, 2001·4 cites·4 claims
- 1369US8417964B2Software module management device and programMIYAZAKI SHINGO·Filed 2008·Granted Apr 9, 2013·4 cites·20 claims
- 1467US8688969B2Cryptographic management apparatus, decryption management apparatus and programMIYAZAKI SHINGO·Filed 2008·Granted Apr 1, 2014·4 cites·14 claims
- 1560US8406422B2Cryptographic module management apparatus, method, and programMIYAZAKI SHINGO·Filed 2008·Granted Mar 26, 2013·2 cites·10 claims
- 1660US8396218B2Cryptographic module distribution system, apparatus, and programMIYAZAKI SHINGO·Filed 2008·Granted Mar 12, 2013·2 cites·35 claims
- 1760US6111723ANarrow track thin film magnetic head suitable for high density recording and reproducing operations and fabrication method thereof wherein an air bearing surface has at least one groove containing a non-magnetic electrically conductive layerHITACHI LTD·Filed 1998·Granted Aug 29, 2000·8 cites·39 claims
- 1858US7206175B2Magnetoresistive head having defined relationships between the tract width and magnetization film thickness product to permit no hysteresis in the transfer curveHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Apr 17, 2007·3 cites·15 claims
- 1957US6665141B2Magnetic head having track width defined by trench portions filled with magnetic shield materialHITACHI LTD·Filed 2003·Granted Dec 16, 2003·1 cites·5 claims
- 2042US6721148B2Magnetoresistive sensor, thin-film read/write head, and magnetic recording apparatus using the sensorHITACHI LTD·Filed 2002·Granted Apr 13, 2004·0 cites·12 claims
- 2139US7116534B2Magnetoresistive headHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Oct 3, 2006·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →