Inventor · disambiguated record
Joseph Chang
Also filed as: CHANG JOSEPH · CHANG JOSEPH EN-CHENG
15 granted patents·11 pending applications·238 citations·filing 1996–2009
92Inventor score
Files withSAMSUNG ELECTRONICS CO LTD15PHILIPS ELECTRONICS NA2TRAN GREGORY2BOLJANOVIC MOMO1CHANG JOSEPH1
Top patents by PatentIndex Score
26 records- 0190US5781418ASwitching scheme for power supply having a voltage-fed inverterPHILIPS ELECTRONICS NA·Filed 1996·Granted Jul 14, 1998·106 cites·19 claims
- 0283US6731468B2Pawl latch for ramp loading hard disk driversSAMSUNG ELECTRONICS CO LTD·Filed 2002·Granted May 4, 2004·22 cites·19 claims
- 0380US6016257AVoltage regulated power supply utilizing phase shift controlPHILIPS ELECTRONICS NA·Filed 1997·Granted Jan 18, 2000·60 cites·15 claims
- 0477US6771451B2Auto centering of disks on a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2001·Granted Aug 3, 2004·12 cites·20 claims
- 0575US7800864B2Actuator latch apparatus having protrusion insertedly coupled to counterbalance for disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2009·Granted Sep 21, 2010·2 cites·14 claims
- 0674US7535679B2Disk drive actuator latch apparatus having elastic damping armSAMSUNG ELECTRONICS CO LTD·Filed 2005·Granted May 19, 2009·2 cites·28 claims
- 0768US7715150B2Apparatus and method for head gimbal assembly sharing power to slider amplifier and micro-actuator in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2006·Granted May 11, 2010·1 cites·20 claims
- 0868US6747843B2Ramp design for reducing read-write head track positioning errorsSAMSUNG ELECTRONICS CO LTD·Filed 2002·Granted Jun 8, 2004·7 cites·14 claims
- 0962US7248441B2Disk drive actuator parking method using impact rebound crash stop with bias tab and pusher and crash stop facesSAMSUNG ELECTRONICS CO LTD·Filed 2004·Granted Jul 24, 2007·4 cites·6 claims
- 1061US6967822B2Disk drive actuator impact rebound crash stop with bias tab and pusher and crash stop facesSAMSUNG ELECTRONICS CO LTD·Filed 2002·Granted Nov 22, 2005·4 cites·22 claims
- 1157US7256961B2Damped spindle motor flange for the disk pack in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2004·Granted Aug 14, 2007·3 cites·23 claims
- 1253US7012785B2Method and apparatus for head slider and suspension reducing air flow turbulence about the slider when accessing a rotating disk in a disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2002·Granted Mar 14, 2006·2 cites·24 claims
- 1351US2010091409A1Head gimbal assembly and actuator having the same in hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2009·Application pending·0 cites
- 1450US7706107B2Method and apparatus for flexible printed circuit bracket including crash stop and/or air block in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2004·Granted Apr 27, 2010·1 cites·12 claims
- 1550US7369367B2Disk drive voice coil motor yoke assembly having proximity latch magnet pair attracting and holding voice coil bias steel therebetweenSAMSUNG ELECTRONICS CO LTD·Filed 2004·Granted May 6, 2008·1 cites·25 claims
- 1647US2008094748A1Top disk-damper imbedded hard disk driveHAN YUN-SIK·Filed 2006·Application pending·0 cites
- 1747US2007292652A1Apparatus and method for a ferroelectric disk, slider, head gimbal, actuator assemblies, and ferroelectric disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2006·Application pending·0 cites
- 1847US2007263326A1Apparatus and method for including amplification of read signal in slider of a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2006·Application pending·0 cites
- 1942US6541925B1Resonant converter circuit with suppression of transients during changes in operating conditionKONINKL PHILIPS ELECTRONICS NV·Filed 1998·Granted Apr 1, 2003·11 cites·4 claims
- 2042US2007127160A1Method and apparatus for an actuator block used in a actuator assembly of a hard disk driveTRAN GREGORY·Filed 2005·Application pending·0 cites
- 2142US2007285842A1Method and apparatus for a base plate used in a head gimbal assembly of a hard disk driveBOLJANOVIC MOMO·Filed 2006·Application pending·0 cites
- 2241US2006098344A1Method and apparatus providing head suspension sag control reducing off-track motion due to disk flutter in a hard disk driveMORRIS FRANK·Filed 2004·Application pending·0 cites
- 2340US2006146448A1Method and apparatus for an actuator arm block including a crash stop stub in a hard disk driveTRAN GREGORY·Filed 2004·Application pending·0 cites
- 2440US2005007688A1Dual speed control to reduce audible noise and protect head during unload in ramp load drives with pawl latchFiled 2004·Application pending·0 cites
- 2538US2006146443A1Method and apparatus for airflow transition edges on noise dampers in a hard disk driveCHANG JOSEPH·Filed 2004·Application pending·0 cites
- 2635US2004100725A1Damped disk spacerFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →