Inventor · disambiguated record
Joseph Cheng-Tsu Liu
Also filed as: LIU JOSEPH C · LIU JOSEPH C S · LIU JOSEPH CHENG-TSU
25 granted patents·1 pending application·1,313 citations·filing 1991–2006
97Inventor score
Top patents by PatentIndex Score
26 records- 0197US7392340B1Disk drive employing stream detection engine to enhance cache management policyWESTERN DIGITAL TECH INC·Filed 2005·Granted Jun 24, 2008·173 cites·33 claims
- 0297US5991113ASlider with temperature responsive transducer positioningSEAGATE TECHNOLOGY·Filed 1997·Granted Nov 23, 1999·378 cites·33 claims
- 0396US7082007B2Method to achieve higher track density by allowing only one-sided track encroachmentSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Jul 25, 2006·70 cites·10 claims
- 0496US5856896AGimbal suspension for supporting a head in a disc drive assemblySEAGATE TECHNOLOGY·Filed 1997·Granted Jan 5, 1999·129 cites·26 claims
- 0594US6324054B1Wrap around shock absorber for disc drivesSEAGATE TECHNOLOGY LLC·Filed 2000·Granted Nov 27, 2001·99 cites·22 claims
- 0693US6476995B1Method and apparatus for reducing track misregistration from servo track writingSEAGATE TECHNOLOGY LLC·Filed 2000·Granted Nov 5, 2002·41 cites·19 claims
- 0792US7532437B2Slider having transducers orientated in different directionsSEAGATE TECHNOLOGY LLC·Filed 2006·Granted May 12, 2009·14 cites·6 claims
- 0891US6765737B1Variable track densities on a recording medium to compensate for non-repeatable runout (NRRO) errorSEAGATE TECHNOLOGY LLC·Filed 2000·Granted Jul 20, 2004·32 cites·14 claims
- 0991US6069771AGimbal micropositioning deviceSEAGATE TECHNOLOGY·Filed 1997·Granted May 30, 2000·60 cites·9 claims
- 1090US7675712B2Ramp structure with inclined contact surfaceSEAGATE TECHNOLOGY LLC·Filed 2006·Granted Mar 9, 2010·10 cites·20 claims
- 1190US6400533B1Disc drive actuator latch system for high rotational shockSEAGATE TECHNOLOGY LLC·Filed 2000·Granted Jun 4, 2002·34 cites·19 claims
- 1290US6008640ADetection and measurement of head disc interference using read back signal (without acoustic emission sensor or laser doppler vibrometer)SEAGATE TECHNOLOGY·Filed 1997·Granted Dec 28, 1999·77 cites·18 claims
- 1383US6606214B1System and method to minimize bearing pivot effect in disc drive actuatorSEAGATE TECHNOLOGY LLC·Filed 2000·Granted Aug 12, 2003·16 cites·20 claims
- 1480US6046596ACapacitance probe for magnetic recording head transducer to disc surface spacing measurementSEAGATE TECHNOLOGY·Filed 1997·Granted Apr 4, 2000·35 cites·15 claims
- 1576US6487035B1Method and apparatus for adaptive feedforward cancellationSEAGATE TECHNOLOGY LLC·Filed 1999·Granted Nov 26, 2002·27 cites·15 claims
- 1676US6164614AMounting frame using an operating vibration damper at a recessed side surface of a disc drive housingSEAGATE TECHNOLOGY LLC·Filed 2000·Granted Dec 26, 2000·19 cites·18 claims
- 1773US6791786B2Active damping of two-stage actuator system in a disc driveSEAGATE TECHNOLOGY LLC·Filed 2000·Granted Sep 14, 2004·9 cites·12 claims
- 1871US6411471B1Low friction bearing pivot for disc driveSEAGATE TECHNOLOGY LLC·Filed 2000·Granted Jun 25, 2002·13 cites·19 claims
- 1970US6453722B1Integrated test system for a disc drive pivot bearing and actuatorSEAGATE TECHNOLOGY LLC·Filed 1999·Granted Sep 24, 2002·21 cites·19 claims
- 2056US6856485B2Biased retaining ring for disc driveSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Feb 15, 2005·5 cites·10 claims
- 2153US5754371ASwage plate bumper for disc driveSEAGATE TECHNOLOGY·Filed 1996·Granted May 19, 1998·10 cites·12 claims
- 2245US6308555B1Rotational shock tester apparatusSEAGATE TECHNOLOGY LLC·Filed 1999·Granted Oct 30, 2001·12 cites·6 claims
- 2344US5280603AServo pause for disk drive embedded multi-tasked controllerQUANTUM CORP·Filed 1991·Granted Jan 18, 1994·19 cites·6 claims
- 2443US6153284AMagnetic recording medium with high non-operational shock resistanceSEAGATE TECHNOLOGY LLC·Filed 1998·Granted Nov 28, 2000·5 cites·17 claims
- 2543US5247448AUsing spectral signature analysis in producing substrates for magnetic mediaSEAGATE TECHNOLOGY·Filed 1991·Granted Sep 21, 1993·5 cites·17 claims
- 2638US2002101688A1Hinge pivot for disc driveFiled 2000·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →