Inventor · disambiguated record
Donald G. Allen
Also filed as: ALLEN DONALD · ALLEN DONALD G · ALLEN DONALD GILES
23 granted patents·4 pending applications·535 citations·filing 1977–2022
96Inventor score
Top patents by PatentIndex Score
27 records- 0195US7576951B2Perpendicular magnetic write head having a magnetic write pole with a concave trailing edgeHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Aug 18, 2009·35 cites·7 claims
- 0295US6115200AMethod and apparatus for preventing write operations in the presence of post-shock motionIBM·Filed 1997·Granted Sep 5, 2000·100 cites·27 claims
- 0394USD424699SWound dressingALLEN DONALD·Filed 1997·Granted May 9, 2000·113 cites·1 claims
- 0493US8201320B2Method for manufacturing a magnetic write head having a wrap around shield that is magnetically coupled with a leading magnetic shieldALLEN DONALD G·Filed 2009·Granted Jun 19, 2012·24 cites·9 claims
- 0593US6446948B1Vacuum chuck for reducing distortion of semiconductor and GMR head wafers during processingIBM·Filed 2000·Granted Sep 10, 2002·72 cites·15 claims
- 0692US7612963B2Perpendicular magnetic recording head with photoresist dam between write coil and air bearing surfaceHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Nov 3, 2009·16 cites·7 claims
- 0789US8218263B2Write head with different upper and lower yoke lengths and methods for making the sameALLEN DONALD G·Filed 2008·Granted Jul 10, 2012·10 cites·18 claims
- 0885US7748103B2Method of manufacturing a perpendicular magnetic recording write head with notched trailing shieldHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Jul 6, 2010·5 cites·7 claims
- 0983US8547660B2Magnetic write head manufactured by an enhanced damascene process producing a tapered write pole with a non-magnetic spacer and non-magnetic bumpALLEN DONALD G·Filed 2009·Granted Oct 1, 2013·13 cites·6 claims
- 1078USD253722SMedication carrierALLEN DONALD G·Filed 1977·Granted Dec 18, 1979·13 cites·1 claims
- 1177US8453317B2Magnetic write head fabrication with integrated electrical lapping guidesALLEN DONALD·Filed 2010·Granted Jun 4, 2013·5 cites·20 claims
- 1277US7933096B2Layered return poles for magnetic write headsHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Apr 26, 2011·4 cites·22 claims
- 1376US9412398B2Shield with uniform magnetic properties for a perpendicular magnetic recording headHGST Netherlands BV·Filed 2013·Granted Aug 9, 2016·3 cites·20 claims
- 1473US6955747B2Cam driven paddle assembly for a plating cellIBM·Filed 2002·Granted Oct 18, 2005·20 cites·20 claims
- 1573US6145212AComponent-support fixtures for component assembly systemARVINMERITOR INC·Filed 1998·Granted Nov 14, 2000·50 cites·43 claims
- 1671US7509729B2Method for making a perpendicular magnetic recording write headHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Mar 31, 2009·6 cites·6 claims
- 1769US8498078B2Magnetic head with flared write pole having multiple tapered regionsALLEN DONALD G·Filed 2009·Granted Jul 30, 2013·1 cites·10 claims
- 1867US7275306B2Damascene method for forming write coils of magnetic headsHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Oct 2, 2007·6 cites·21 claims
- 1957US5790344ABase casting/cover for separating pack bounce and spindle tilt modes in a magnetic storage systemIBM·Filed 1997·Granted Aug 4, 1998·12 cites·18 claims
- 2049US2009057160A1Interleaved helical coils on perpendicular headsALLEN DONALD G·Filed 2007·Application pending·0 cites
- 2148US12411403B2Method of making a hard disk drive write pole using a tri-tone attenuated phase shift maskWESTERN DIGITAL TECH INC·Filed 2022·Granted Sep 9, 2025·0 cites·20 claims
- 2248US7030035B2Prevention of electrostatic wafer sticking in plasma deposition/etch toolsHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Apr 18, 2006·3 cites·11 claims
- 2348US5903409AMethod and means for maintaining data integrity in disk drives resulting from shock-induced contact between recording and access components during nonoperational periodsIBM·Filed 1997·Granted May 11, 1999·10 cites·9 claims
- 2448US5179379AAnalog to digital convertor with drift compensationIBM·Filed 1991·Granted Jan 12, 1993·14 cites·6 claims
- 2540US2013082027A1Method for manufacturing a perpendicular magnetic write head using novel reactive ion etching chemistryMAO GUOMIN·Filed 2011·Application pending·0 cites
- 2639US2012162821A1Write head with rotational write fieldLAM QUAN-CHIU HARRY·Filed 2010·Application pending·0 cites
- 2739US2013020204A1Magnetic write head having an electroplated write pole with a leading edge taperALLEN DONALD G·Filed 2011·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →