Inventor · disambiguated record
Robert D. Hempstead
Also filed as: HEMPSTEAD ROBERT · HEMPSTEAD ROBERT D · HEMPSTEAD ROBERT DOUGLAS
15 granted patents·1 pending application·737 citations·filing 1975–2010
95Inventor score
Top patents by PatentIndex Score
16 records- 0198US4103315AAntiferromagnetic-ferromagnetic exchange bias filmsIBM·Filed 1977·Granted Jul 25, 1978·305 cites·53 claims
- 0294US4242710AThin film head having negative magnetostrictionIBM·Filed 1979·Granted Dec 30, 1980·55 cites·5 claims
- 0393US4024489AMagnetoresistive sandwich including sensor electrically parallel with electrical shunt and magnetic biasing layersIBM·Filed 1975·Granted May 17, 1977·49 cites·14 claims
- 0492US6671235B1Method of and apparatus for defining disk tracks in magnetic recording mediaULTRATECH STEPPER INC·Filed 2000·Granted Dec 30, 2003·37 cites·31 claims
- 0591US4130847ACorrosion resistant thin film head assembly and method for makingIBM·Filed 1977·Granted Dec 19, 1978·76 cites·9 claims
- 0687US6212047B1Hard disk drive with magnetoresistive head and perpendicular mediaCENSTOR CORP·Filed 1996·Granted Apr 3, 2001·38 cites·21 claims
- 0786US6320725B1Hard disk drive having ring head with predominantly perpendicular media fieldsCENSTOR CORP·Filed 1995·Granted Nov 20, 2001·36 cites·16 claims
- 0885US7095585B2Hard disk drive for perpendicular recording with transducer having submicron gap between pole tipsSEAGATE TECHNOLOGY LLC·Filed 2004·Granted Aug 22, 2006·14 cites·23 claims
- 0984US5949612ALow friction sliding hard disk drive systemCENSTOR CORP·Filed 1995·Granted Sep 7, 1999·47 cites·19 claims
- 1077US8919279B1Processing system having magnet keeperBOUREZ ALLEN J·Filed 2010·Granted Dec 30, 2014·4 cites·18 claims
- 1175US6198607B1Contact planar magnetoresistive headCENSTOR CORP·Filed 1996·Granted Mar 6, 2001·25 cites·19 claims
- 1273US6493191B1Planar magnetic ring head for contact recording with a rigid diskCENSTOR CORP·Filed 1995·Granted Dec 10, 2002·26 cites·20 claims
- 1372US4049522ALow coercivity iron-silicon material, shields, and processIBM·Filed 1976·Granted Sep 20, 1977·17 cites·3 claims
- 1471US6535361B2Contact planar magnetoresistive headCENSTOR CORP·Filed 2001·Granted Mar 18, 2003·7 cites·22 claims
- 1568US7541105B2Epitaxial ferroelectric and magnetic recording structures including graded lattice matching layersSEAGATE TECHNOLOGY LLC·Filed 2006·Granted Jun 2, 2009·1 cites·13 claims
- 1643US2002093761A1Hard disk drive for perpendicular recording with transducer having submicron gap between pole tipsFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →