Inventor · disambiguated record
Ferdinand Hendriks
Also filed as: HENDRIKS FERDINAND · HENDRIKS FERDINAND BERNARDUS JOHANNUS WILHELMUS MA
61 granted patents·9 pending applications·1,021 citations·filing 1976–2012
99Inventor score
Files withIBM19HITACHI GLOBAL STORAGE TECH17HITACHI GLOBAL STORAGE TECH NL9CHAN ANDRE S4FELISS NORBERT A4
Top patents by PatentIndex Score
70 records- 0198US7355584B2Projector and camera arrangement with shared optics and optical marker for use with whiteboard systemsIBM·Filed 2005·Granted Apr 8, 2008·61 cites·5 claims
- 0298US5021906AProgrammable air bearing slider including magnetic read/write elementIBM·Filed 1989·Granted Jun 4, 1991·145 cites·37 claims
- 0397US6707444B1Projector and camera arrangement with shared optics and optical marker for use with whiteboard systemsIBM·Filed 2000·Granted Mar 16, 2004·104 cites·19 claims
- 0495US4097872AAxial droplet aspiratorIBM·Filed 1976·Granted Jun 27, 1978·66 cites·25 claims
- 0592US5940249AShielded air bearing sliderIBM·Filed 1997·Granted Aug 17, 1999·79 cites·12 claims
- 0690US5550693AAir bearing slider having projections that provide minimal actual contact areaIBM·Filed 1994·Granted Aug 27, 1996·62 cites·24 claims
- 0788US6091570AArchitecture for guiding the air flow in a disk storage deviceIBM·Filed 1998·Granted Jul 18, 2000·49 cites·14 claims
- 0887US7203030B2System, method, and apparatus for aerodynamic diverter integrated with a diffuser in a bypass channel for applications in a disk storage deviceHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Apr 10, 2007·18 cites·19 claims
- 0987US5424888ASpeed independent, air bearing sliderIBM·Filed 1993·Granted Jun 13, 1995·49 cites·36 claims
- 1085US6681056B1Method and system for digital image acquisition and continuous zoom display from multiple resolutional views using a heterogeneous image pyramid representationIBM·Filed 1999·Granted Jan 20, 2004·92 cites·42 claims
- 1184US8248725B2System and method to electrically ground fluid dynamic bearingsHENDRIKS FERDINAND·Filed 2007·Granted Aug 21, 2012·12 cites·8 claims
- 1284US8085488B2Predicting operational problems in a hard-disk drive (HDD)FELISS NORBERT A·Filed 2009·Granted Dec 27, 2011·6 cites·22 claims
- 1383US7136053B2Projector and camera arrangement with shared optics and optical marker for use with whiteboard systemsIBM·Filed 2002·Granted Nov 14, 2006·18 cites·6 claims
- 1481US8199426B2Method and system for providing hard disk shrouds with aerodynamic fences for suppressing flow induced disk excitationHENDRIKS FERDINAND·Filed 2008·Granted Jun 12, 2012·4 cites·15 claims
- 1581US7998913B2Flow modifiers for improved magnetic recording deviceHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Aug 16, 2011·4 cites·14 claims
- 1681US7405904B2Aerodynamic diverter integrated with a diffuser and a contraction in a bypass channel for a disk storage deviceHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted Jul 29, 2008·3 cites·1 claims
- 1780US7465098B2Spindle motor having variably grooved radial and thrust bearing with reduced groove angle near bearing entryHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Dec 16, 2008·7 cites·20 claims
- 1880US4077040AGuard jets in multiple nozzle printingIBM·Filed 1976·Granted Feb 28, 1978·18 cites·6 claims
- 1979US8031430B2System, method, and apparatus for lightweight spoiler wing design for de-populated disk drivesHITACHI GLOBAL STORAGE TECH NL·Filed 2006·Granted Oct 4, 2011·4 cites·12 claims
- 2079US7869159B2Apparatus and method for reducing turbulence of airflow in a hard disk driveHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Jan 11, 2011·3 cites·30 claims
- 2178US8274754B2System, method and apparatus for integrated bypass channel and diverter for hard disk drivesCHAN ANDRE S·Filed 2008·Granted Sep 25, 2012·4 cites·13 claims
- 2278US7619339B2Fluid dynamic bearing assembly for directing bubblesHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Nov 17, 2009·3 cites·17 claims
- 2378US7599148B2Apparatus and method for integral filter and bypass channel in a hard disk driveHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Oct 6, 2009·5 cites·17 claims
- 2478US4311436AFluid pressure and velocity sensing apparatusIBM·Filed 1979·Granted Jan 19, 1982·17 cites·11 claims
- 2576US7990650B2Reducing the obstruction of air flow through a bypass channel associated with a disk drive using an electrostatic pass-by filterHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Aug 2, 2011·2 cites·7 claims
- 2676US7898764B2System, method, and apparatus for slit shroud with integrated bypass channel wall feature for disk drive applicationsHITACHI GLOBAL STORAGE TECH NL·Filed 2006·Granted Mar 1, 2011·3 cites·6 claims
- 2775US7219233B1Methods and apparatus for associating a user with content in a collaborative whiteboard systemIBM·Filed 2000·Granted May 15, 2007·33 cites·23 claims
- 2875US7158342B2Hard disk drive with aerodynamic diffuser, contraction, and fairing for disk base and re-acceleration drag reductionHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Jan 2, 2007·8 cites·24 claims
- 2975US5537273ASpeed and skew independent, air bearing sliderIBM·Filed 1995·Granted Jul 16, 1996·28 cites·19 claims
- 3074US8004790B2Spoiler with integrated bypass channel wall for HDD applicationsHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Aug 23, 2011·2 cites·18 claims
- 3174US7633708B2Collapsible bypass channel disposed outside of disk drive housingHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Dec 15, 2009·2 cites·10 claims
- 3274US6075683ADisk drive with passive multiple fly height slider and cooperative disk patternIBM·Filed 1993·Granted Jun 13, 2000·23 cites·7 claims
- 3373US7936533B2System, method and apparatus for wall slot in disk drive bypass channel for enhanced voice coil motor coolingHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted May 3, 2011·2 cites·17 claims
- 3473US7662021B2Lapping plate texture for increased control over actual lapping forceHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted Feb 16, 2010·2 cites·20 claims
- 3573US7123439B2Aerodynamic diffuser, contraction, and fairing for disk base and re-acceleration drag reduction in hard disk drivesHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Oct 17, 2006·9 cites·14 claims
- 3672US8102618B2System, method and apparatus for disk drive recirculation filter having inlet and outlet disk rim shroudingCHAN ANDRE S·Filed 2008·Granted Jan 24, 2012·2 cites·20 claims
- 3771US8345377B2Aerodynamic device directing pressurized airflow to ports in the device for aerostatic sealing in a hard disk drive(HDD)HGST Netherlands BV·Filed 2009·Granted Jan 1, 2013·1 cites·12 claims
- 3870US8825182B2Position control system, lithographic apparatus, and method to control a position of a movable objectSIMONS WILHELMUS FRANCISCUS JOHANNES·Filed 2011·Granted Sep 2, 2014·3 cites·16 claims
- 3970US8355220B2Upstream spoiler with integrated crash stopHGST Netherlands BV·Filed 2009·Granted Jan 15, 2013·1 cites·19 claims
- 4069US6917033B2Passive touch-sensitive optical markerIBM·Filed 2002·Granted Jul 12, 2005·13 cites·19 claims
- 4168US8134795B2Using an atmospheric pressure sensor in a hard-disk drive (HDD)FELISS NORBERT A·Filed 2009·Granted Mar 13, 2012·1 cites·18 claims
- 4268US8102621B2Integrated upstream spoiler and particle filter in a hard-disk drive (HDD)HENDRIKS FERDINAND·Filed 2009·Granted Jan 24, 2012·1 cites·20 claims
- 4366US7637663B2Fluid bearing with a variable depth grooveHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Dec 29, 2009·3 cites·24 claims
- 4466US4544889ARobot precision probe positioner with guidance opticsIBM·Filed 1983·Granted Oct 1, 1985·21 cites·6 claims
- 4565US8077431B2Apparatus and method for reducing turbulence of airflow in a hard disk driveABE YUKINOBU·Filed 2010·Granted Dec 13, 2011·2 cites·22 claims
- 4665US8077430B2System and apparatus for mass-balanced spoiler in disk storage devicesCHAN ANDRE S·Filed 2007·Granted Dec 13, 2011·1 cites·15 claims
- 4762US7002768B2Disk drive having reduced variation of disk surface lubricant layer thicknessHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Feb 21, 2006·4 cites·12 claims
- 4861US8345378B2Air pump in a hard disk drive (HDD)HITACHI GLOBAL STORAGE TECH NL·Filed 2009·Granted Jan 1, 2013·0 cites·13 claims
- 4961US7821167B2Method and apparatus for increasing the buffer volume in a fluid dynamic bearingHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Oct 26, 2010·2 cites·17 claims
- 5059US7450337B2Apparatus and method for guiding bypass reentry flow through contraction and filter in a hard disk driveHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Nov 11, 2008·3 cites·17 claims
Showing the top 50 of 70 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →