Inventor · disambiguated record
Joichiro Ezaki
Also filed as: EZAKI JOICHIRO
33 granted patents·2 pending applications·389 citations·filing 1983–2013
97Inventor score
Top patents by PatentIndex Score
35 records- 0181US5080948AMagnetic recording/reproducing system comprising a glass substrate thin film magnetic disk and a flying magnetic head with defined spacing and surface roughnessTDK CORP·Filed 1989·Granted Jan 14, 1992·45 cites·8 claims
- 0281US4928195AImproved floating magnetic head for high density recordingTDK CORP·Filed 1988·Granted May 22, 1990·24 cites·3 claims
- 0380US4908727ADisk with substrate of alumina silicate resin glassTDK CORP·Filed 1988·Granted Mar 13, 1990·20 cites·4 claims
- 0478US8897061B2MTJ cell for an MRAM device and a manufacturing method thereofQUANTUMAG CONSULTANCY CORP·Filed 2013·Granted Nov 25, 2014·8 cites·41 claims
- 0578US5094898AMagnetic recording medium comprising a glass substrate of controlled surface roughness and a magnetic thin film layer of gamma Fe2 O3TDK CORP·Filed 1990·Granted Mar 10, 1992·27 cites·15 claims
- 0677US6930911B2Magnetic memory device, method for writing on the same and method for reading from the sameTDK CORP·Filed 2003·Granted Aug 16, 2005·24 cites·26 claims
- 0775US6137652AThin film magnetic head with separated yoke and pole tipsTDK CORP·Filed 1998·Granted Oct 24, 2000·26 cites·13 claims
- 0875US4803577AVertical magnetic recording system using rigid diskTDK CORP·Filed 1986·Granted Feb 7, 1989·17 cites·3 claims
- 0974US6515835B2Precise positioning actuator actuator for precisely positioning thin-film magnetic head element and head gimbal assembly with the actuatorTDK CORP·Filed 2001·Granted Feb 4, 2003·9 cites·24 claims
- 1073US5978176AMagnetic head for a magnetic disk having a slider with indented portions for providing heat dissipationTDK CORP·Filed 1997·Granted Nov 2, 1999·27 cites·4 claims
- 1171US4918556AMagnetic disk recording and reproducing apparatusTDK CORP·Filed 1988·Granted Apr 17, 1990·16 cites·14 claims
- 1269US4939604AMagnetic recording and reproducing apparatus and a magnetic head used for the apparatusTDK CORP·Filed 1989·Granted Jul 3, 1990·15 cites·17 claims
- 1367US7209380B2Magnetic memory device and method of reading the sameTDK CORP·Filed 2004·Granted Apr 24, 2007·15 cites·16 claims
- 1466US4893203AMagnetic headTDK CORP·Filed 1988·Granted Jan 9, 1990·14 cites·3 claims
- 1565US6996001B2Magnetic memory device, write current drive circuit, and write current drive methodTDK CORP·Filed 2003·Granted Feb 7, 2006·13 cites·39 claims
- 1665US4797765AThin film magnetic head having solder-bonded protective plateTDK CORP·Filed 1988·Granted Jan 10, 1989·13 cites·5 claims
- 1762US7227771B2Magnetoresistive effect element and magnetic memory deviceTDK CORP·Filed 2004·Granted Jun 5, 2007·8 cites·2 claims
- 1861US7295460B2Magnetic memory cell, magnetic memory device, and method of manufacturing magnetic memory deviceTDK CORP·Filed 2004·Granted Nov 13, 2007·7 cites·50 claims
- 1960US7277320B2Magnetic memory device, sense amplifier circuit and method of reading from magnetic memory deviceTDK CORP·Filed 2004·Granted Oct 2, 2007·7 cites·14 claims
- 2058US5545988AWaveform signal processor with selective samplingTDK CORP·Filed 1994·Granted Aug 13, 1996·11 cites·9 claims
- 2153US7016221B2Magnetoresistive effect element, magnetic memory device and method of fabricating the sameTDK CORP·Filed 2003·Granted Mar 21, 2006·7 cites·31 claims
- 2251US4564877AMagnetic recording/reproducing system with wide-gapped transducer and method for using sameTDK CORP·Filed 1983·Granted Jan 14, 1986·7 cites·8 claims
- 2347US7342822B2Magnetic memory device, write current driver circuit and write current driving methodTDK CORP·Filed 2004·Granted Mar 11, 2008·5 cites·21 claims
- 2446US5847899AMagnetic disk recording and reproducing apparatusTDK CORP·Filed 1997·Granted Dec 8, 1998·7 cites·28 claims
- 2545US7230843B2Magnetic memory device and writing method of the sameTDK CORP·Filed 2004·Granted Jun 12, 2007·4 cites·21 claims
- 2644US5072320AMagnetic recording and reproducing apparatus having improved durabilityTDK CORP·Filed 1989·Granted Dec 10, 1991·5 cites·9 claims
- 2743US2006279980A1Magnetic storage cell and magnetic memory deviceTDK CORP·Filed 2004·Application pending·0 cites
- 2839US7349244B2Magnetic memory deviceTDK CORP·Filed 2006·Granted Mar 25, 2008·0 cites·8 claims
- 2939US4562502AOptical reproducing systemTDK CORP·Filed 1983·Granted Dec 31, 1985·3 cites·10 claims
- 3037US7808813B2Magnetic memory cell reading apparatusTDK CORP·Filed 2005·Granted Oct 5, 2010·0 cites·9 claims
- 3136US7522450B2Magnetic storage cell, magnetic memory device and magnetic memory device manufacturing methodTDK CORP·Filed 2004·Granted Apr 21, 2009·0 cites·40 claims
- 3236US4901175AMagnetic head supporting deviceTDK CORP·Filed 1988·Granted Feb 13, 1990·3 cites·3 claims
- 3335US5268799AMagnetic recording and reproducing apparatusTDK CORP·Filed 1993·Granted Dec 7, 1993·2 cites·13 claims
- 3434US2006062075A1Magnetic memoryTDK CORP·Filed 2005·Application pending·0 cites
- 3529US7352615B2Magnetic memory deviceTDX CORP·Filed 2006·Granted Apr 1, 2008·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →