Inventor · disambiguated record
Andrew Ching Tam
Also filed as: SUN YUNLONG · TAM ANDREW C · TAM ANDREW CHING
56 granted patents·3 pending applications·1,786 citations·filing 1979–2005
99Inventor score
Top patents by PatentIndex Score
59 records- 0198US4577503AMethod and device for detecting a specific acoustic spectral featureIBM·Filed 1984·Granted Mar 25, 1986·207 cites·11 claims
- 0297US7006336B2Magnetic head having a heater circuit for thermally-assisted writingIBM·Filed 2002·Granted Feb 28, 2006·68 cites·23 claims
- 0395US6255621B1Laser cutting method for forming magnetic recording head slidersIBM·Filed 2000·Granted Jul 3, 2001·52 cites·7 claims
- 0493US7239481B2Magnetic head having multilayer heater for thermally assisted write head and method of fabrication thereofHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Jul 3, 2007·13 cites·24 claims
- 0593US5759428AMethod of laser cutting a metal line on an MR headIBM·Filed 1996·Granted Jun 2, 1998·84 cites·22 claims
- 0692USRE39001ELaser cutting method for forming magnetic recording head slidersHITACHI GLOBAL STORAGE TECH·Filed 2002·Granted Mar 7, 2006·29 cites·7 claims
- 0791US7170714B2Magnetic head having a heater circuit for thermally-assisted writingIBM·Filed 2005·Granted Jan 30, 2007·9 cites·2 claims
- 0891US5421943APulsed current resistive heating for bonding temperature critical componentsIBM·Filed 1993·Granted Jun 6, 1995·83 cites·32 claims
- 0990US5595791AProcess for texturing brittle glass disksIBM·Filed 1995·Granted Jan 21, 1997·56 cites·28 claims
- 1090US5586040AProcess and apparatus for controlled laser texturing of magnetic recording diskIBM·Filed 1995·Granted Dec 17, 1996·68 cites·20 claims
- 1190US5567484AProcess for texturing brittle nonmetallic surfacesIBM·Filed 1995·Granted Oct 22, 1996·54 cites·40 claims
- 1290US5345353AStep projection air bearing slider with improved stiction performance and wear resistanceIBM·Filed 1992·Granted Sep 6, 1994·53 cites·6 claims
- 1389US6107599AMethod and tool for laser texturing of glass substratesIBM·Filed 1999·Granted Aug 22, 2000·47 cites·17 claims
- 1487US6538857B1Read head with N-cycle switch for electrostatic discharge (ESD) protectionIBM·Filed 2000·Granted Mar 25, 2003·24 cites·32 claims
- 1587US5528922AMethod of making disk bumps with laser pulses for calibrating PZT slidersIBM·Filed 1994·Granted Jun 25, 1996·39 cites·14 claims
- 1687US5528819ACombination transducer/slider/suspension and method for makingIBM·Filed 1995·Granted Jun 25, 1996·50 cites·5 claims
- 1784US4303343AOptoacoustic spectroscopy of condensed matter in bulk formBELL TELEPHONE LABOR INC·Filed 1980·Granted Dec 1, 1981·44 cites·8 claims
- 1883US5951891AOptical apparatus for monitoring profiles of textured spots during a disk texturing processIBM·Filed 1997·Granted Sep 14, 1999·55 cites·17 claims
- 1983US5822211ALaser texturing apparatus with dual laser paths having an independently adjusted parameterIBM·Filed 1996·Granted Oct 13, 1998·58 cites·22 claims
- 2083US4276780AOptoacoustic spectroscopy of thin layersBELL TELEPHONE LABOR INC·Filed 1979·Granted Jul 7, 1981·34 cites·14 claims
- 2182US5768076AMagnetic recording disk having a laser-textured surfaceIBM·Filed 1996·Granted Jun 16, 1998·32 cites·28 claims
- 2280US6013336AProcedure employing a diode-pumped laser for controllably texturing a disk surfaceIBM·Filed 1998·Granted Jan 11, 2000·28 cites·69 claims
- 2379US5326426AUndercut membrane mask for high energy photon patterningTAM ANDREW C·Filed 1991·Granted Jul 5, 1994·51 cites·39 claims
- 2478US5910262AMethod and tool for laser texturing of glass substratesIBM·Filed 1997·Granted Jun 8, 1999·33 cites·18 claims
- 2577US5907144AMicroscopic bar code for component identification and method for making sameIBM·Filed 1997·Granted May 25, 1999·63 cites·21 claims
- 2675US6710295B1Slider curvature modification by substrate melting effect produced with a pulsed laser beamHITACHI GLOBAL STORAGE TECH·Filed 2000·Granted Mar 23, 2004·15 cites·19 claims
- 2775US6108170ASlider row with segmented scribe lines for individual control curvature of sliders in the rowIBM·Filed 1998·Granted Aug 22, 2000·26 cites·17 claims
- 2874US6614519B1Surface inspection tool using a parabolic mirrorIBM·Filed 2000·Granted Sep 2, 2003·12 cites·15 claims
- 2974US5689057ACalibration disk with disk bumps for calibrating PZT slidersIBM·Filed 1996·Granted Nov 18, 1997·26 cites·7 claims
- 3071US5761005ACombination transducer/slider/suspensionIBM·Filed 1997·Granted Jun 2, 1998·20 cites·10 claims
- 3170US6288873B1Curvature adjustment of sliders by scribing of slider suspensionIBM·Filed 1999·Granted Sep 11, 2001·21 cites·7 claims
- 3269US5658475AApparatus for laser texturing disksIBM·Filed 1996·Granted Aug 19, 1997·26 cites·23 claims
- 3368US6321440B1Method for adjusting curvature of magnetic read/write head slidersIBM·Filed 1998·Granted Nov 27, 2001·26 cites·11 claims
- 3468USRE37145EApparatus for laser texturing disksIBM·Filed 1999·Granted Apr 24, 2001·18 cites·38 claims
- 3567US6118632AMagnetic disk stack having laser-bump identifiers on magnetic disksIBM·Filed 1997·Granted Sep 12, 2000·20 cites·10 claims
- 3667US6049056AMethod of laser cutting a metal line on an MR head with a laserIBM·Filed 1998·Granted Apr 11, 2000·21 cites·12 claims
- 3766US6631548B2Simultaneous slider crown and camber adjust by scribe line controlIBM·Filed 2001·Granted Oct 14, 2003·6 cites·26 claims
- 3866US5699160AOptical apparatus for inspecting laser textureIBM·Filed 1996·Granted Dec 16, 1997·31 cites·22 claims
- 3962US6831249B2Slider produced by slider curvature modification by substrate melting produced with a pulsed laser beamHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Dec 14, 2004·7 cites·9 claims
- 4062US6246543B1Textured data storage disk having a brittle nonmetallic substrateIBM·Filed 1996·Granted Jun 12, 2001·17 cites·29 claims
- 4161US6075604AApparatus for measuring curvature of magnetic read/write head slidersIBM·Filed 1998·Granted Jun 13, 2000·22 cites·8 claims
- 4261US5544775ALaser machined sliderIBM·Filed 1994·Granted Aug 13, 1996·12 cites·23 claims
- 4360US5631408AMethod of making disk bumps with laser pulsesIBM·Filed 1996·Granted May 20, 1997·15 cites·18 claims
- 4459US5875084AMagnetic recording disk having protrusions centered in respective depressionsIBM·Filed 1997·Granted Feb 23, 1999·11 cites·23 claims
- 4557US6888701B2Enhanced twist adjust range with scribed lines for slider curvature adjustHITACHI GLOBAL STORAGE TECH·Filed 2001·Granted May 3, 2005·3 cites·25 claims
- 4656US5830514AControlling pulses in a laser texturing toolIBM·Filed 1996·Granted Nov 3, 1998·12 cites·16 claims
- 4753US6797130B2Laser textured magnetic diskHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Sep 28, 2004·4 cites·7 claims
- 4853US6103990ALaser texturing system providing even heating of textured spots on a rotating diskIBM·Filed 1998·Granted Aug 15, 2000·17 cites·8 claims
- 4952US5963569AMultiple channel acousto-optic modulatorsIBM·Filed 1997·Granted Oct 5, 1999·18 cites·26 claims
- 5050US7133257B2Control of twist, crown and camber for sliders using location sensitive scribingHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Nov 7, 2006·0 cites·20 claims
Showing the top 50 of 59 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →