Inventor · disambiguated record
Timothy A. Ferris
Also filed as: FERRIS TIMOTHY · FERRIS TIMOTHY A
42 granted patents·2 pending applications·1,741 citations·filing 1984–2022
98Inventor score
Files withWESTERN DIGITAL TECH INC30FERRIS TIMOTHY A6MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC23D SYSTEMS INC1DATAPRODUCTS CORP1
Top patents by PatentIndex Score
44 records- 0199US7471483B1Disk drive compensating for rotational vibrations, physical shocks, and thermal poppingWESTERN DIGITAL TECH INC·Filed 2007·Granted Dec 30, 2008·150 cites·17 claims
- 0298US8717699B1Voltage quadrupler comprising a second charging capacitor charged using a first charging capacitorFERRIS TIMOTHY A·Filed 2012·Granted May 6, 2014·100 cites·22 claims
- 0398US8358145B1Self-heating integrated circuitWESTERN DIGITAL TECH INC·Filed 2009·Granted Jan 22, 2013·117 cites·10 claims
- 0498US8081395B1Continuous digital offset cancellationFERRIS TIMOTHY A·Filed 2009·Granted Dec 20, 2011·109 cites·33 claims
- 0598US7852588B1Disk drive adjusting gain of shock detector relative to resonant frequency amplitudeWESTERN DIGITAL TECH INC·Filed 2008·Granted Dec 14, 2010·115 cites·22 claims
- 0698US6493169B1Disk drive employing spindle motor commutation time variation for reducing acoustic noiseWESTERN DIGITAL TECH INC·Filed 2000·Granted Dec 10, 2002·162 cites·16 claims
- 0797US8767354B1Data storage device employing cascaded voltage regulators during power failureFERRIS TIMOTHY A·Filed 2011·Granted Jul 1, 2014·89 cites·20 claims
- 0897US8358114B1Output capacitor current as feedback to control a hysteretic voltage regulatorWESTERN DIGITAL TECH INC·Filed 2009·Granted Jan 22, 2013·112 cites·20 claims
- 0997US8145934B1Soft start sequencer for starting multiple voltage regulatorsFERRIS TIMOTHY A·Filed 2009·Granted Mar 27, 2012·114 cites·19 claims
- 1096US6865049B1Methods, systems and devices for converting the kinetic energy of a rotating disk drive spindle motor into electrical energy to charge a rechargeable batteryWESTERN DIGITAL TECH INC·Filed 2002·Granted Mar 8, 2005·72 cites·145 claims
- 1196US6788483B1Disk drive comprising a programmable inverting voltage regulator configured relative to the disk drive's mode of operationWESTERN DIGITAL TECH INC·Filed 2001·Granted Sep 7, 2004·117 cites·25 claims
- 1294US6972539B1Disk drive employing commutation phase modulation and current modulation of a spindle motorWESTERN DIGITAL TECH INC·Filed 2003·Granted Dec 6, 2005·122 cites·12 claims
- 1392US9793912B1Analog-to-digital conversion circuitry with real-time adjusted gain and resolutionWESTERN DIGITAL TECH INC·Filed 2016·Granted Oct 17, 2017·13 cites·16 claims
- 1492US6261077B1Rapid prototyping apparatus with enhanced thermal and/or vibrational stability for production of three dimensional objects3D SYSTEMS INC·Filed 1999·Granted Jul 17, 2001·110 cites·26 claims
- 1591US10013032B1Current balancing circuit for multiple supply voltage systemsWESTERN DIGITAL TECH INC·Filed 2017·Granted Jul 3, 2018·8 cites·19 claims
- 1691US9972348B1Data storage device employing smart braking to unload multiple voice coil motorsWESTERN DIGITAL TECH INC·Filed 2017·Granted May 15, 2018·11 cites·21 claims
- 1791US4794232AControl for gas metal arc welding systemKINETIC ENERGY CORP·Filed 1986·Granted Dec 27, 1988·75 cites·18 claims
- 1889US9564162B1Data storage device measuring resonant frequency of a shock sensor by applying differential excitation and measuring oscillationWESTERN DIGITAL TECH INC·Filed 2015·Granted Feb 7, 2017·4 cites·23 claims
- 1989US9437231B1Data storage device concurrently controlling and sensing a secondary actuator for actuating a head over a diskWESTERN DIGITAL TECH INC·Filed 2015·Granted Sep 6, 2016·8 cites·39 claims
- 2089US9390749B2Power failure management in disk drivesWESTERN DIGITAL TECH INC·Filed 2015·Granted Jul 12, 2016·3 cites·18 claims
- 2189US8982501B1Data storage device compensating for repeatable disturbance when commutating a spindle motorWESTERN DIGITAL TECH INC·Filed 2014·Granted Mar 17, 2015·11 cites·22 claims
- 2289US4591774AHigh performance incremental motion system using a closed loop stepping motorDATAPRODUCTS CORP·Filed 1984·Granted May 27, 1986·59 cites·14 claims
- 2384US10242706B1Data storage device detecting spindle motor position at increased resolution using mutual inductive senseWESTERN DIGITAL TECH INC·Filed 2018·Granted Mar 26, 2019·2 cites·40 claims
- 2484US9093105B2Disk drive charging capacitor using motor supply voltage during power failureFERRIS TIMOTHY A·Filed 2011·Granted Jul 28, 2015·6 cites·5 claims
- 2583US9832050B1Shock sensor resonance detection for notch filter tuningWESTERN DIGITAL TECH INC·Filed 2016·Granted Nov 28, 2017·2 cites·30 claims
- 2682US8922940B1Data storage device reducing spindle motor voltage boost during power failureWESTERN DIGITAL TECH INC·Filed 2014·Granted Dec 30, 2014·5 cites·16 claims
- 2781US9484733B1Power control module for data storage deviceWESTERN DIGITAL TECH INC·Filed 2014·Granted Nov 1, 2016·4 cites·36 claims
- 2881US8937404B1Data storage device comprising dual mode independent/parallel voltage regulatorsFERRIS TIMOTHY A·Filed 2011·Granted Jan 20, 2015·6 cites·22 claims
- 2979US9076473B1Data storage device detecting fly height instability of head during load operation based on microactuator responseWESTERN DIGITAL TECH INC·Filed 2014·Granted Jul 7, 2015·4 cites·34 claims
- 3078US9620160B1Data storage device measuring resonant frequency of a shock sensor by inserting the shock sensor into an oscillator circuitWESTERN DIGITAL TECH INC·Filed 2015·Granted Apr 11, 2017·4 cites·19 claims
- 3178US8947822B1Disk drive adjusting fly height based on air density measured from rate of temperature changeRICE ALAN P·Filed 2009·Granted Feb 3, 2015·5 cites·19 claims
- 3276US10541054B2Structured support of clinical healthcare professionalsZALIS MICHAEL E·Filed 2014·Granted Jan 21, 2020·5 cites·20 claims
- 3376US10242698B1Data storage device regulating BEMF power voltage during power failureWESTERN DIGITAL TECH INC·Filed 2018·Granted Mar 26, 2019·3 cites·27 claims
- 3476US10176835B1Data storage device employing predictive oversampling for servo controlWESTERN DIGITAL TECH INC·Filed 2018·Granted Jan 8, 2019·3 cites·25 claims
- 3573US9396751B1Data storage device compensating for fabrication tolerances when measuring spindle motor currentWESTERN DIGITAL TECH INC·Filed 2015·Granted Jul 19, 2016·3 cites·34 claims
- 3671US9063714B1Detecting startup fault of SDRAM voltage regulatorRYAN ROBERT P·Filed 2008·Granted Jun 23, 2015·5 cites·25 claims
- 3767US9058834B1Power architecture for low power modes in storage devicesWESTERN DIGITAL TECH INC·Filed 2014·Granted Jun 16, 2015·1 cites·20 claims
- 3866US8947819B1Disk drive implementing hysteresis for primary shock detector based on a more sensitive secondary shock detectorWESTERN DIGITAL TECH INC·Filed 2013·Granted Feb 3, 2015·1 cites·20 claims
- 3965US2023026624A1Structured support of clinical healthcare professionalsMASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC·Filed 2022·Application pending·0 cites
- 4064US9025273B1Disk drive employing digital accumulators to limit velocity and/or acceleration of microactuatorWESTERN DIGITAL TECH INC·Filed 2013·Granted May 5, 2015·1 cites·19 claims
- 4159US11410775B2Structured support of clinical healthcare professionalsMASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC·Filed 2019·Granted Aug 9, 2022·0 cites·20 claims
- 4256US8913342B1Data storage device adjusting range of microactuator digital-to-analog converter based on operating temperatureWESTERN DIGITAL TECH INC·Filed 2014·Granted Dec 16, 2014·0 cites·12 claims
- 4353US9275927B1Self-heating integrated circuitWESTERN DIGITAL TECH INC·Filed 2012·Granted Mar 1, 2016·0 cites·14 claims
- 4446US2017092310A1Data storage device concurrently controlling and sensing a secondary actuator for actuating a head over a diskWESTERN DIGITAL TECH INC·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →