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Inventor

HEMPSTEAD ROBERT D

US11 patents
⚠️ This page may combine multiple inventors who share the name “HEMPSTEAD ROBERT D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CENSTOR CORP

6 patents
US6320725B1Nov 20, 2001

Hard disk drive having ring head with predominantly perpendicular media fields

CENSTOR CORP36 citations92
US6212047B1Apr 3, 2001

Hard disk drive with magnetoresistive head and perpendicular media

CENSTOR CORP38 citations92
US6198607B1Mar 6, 2001

Contact planar magnetoresistive head

CENSTOR CORP25 citations92
US6493191B1Dec 10, 2002

Planar magnetic ring head for contact recording with a rigid disk

CENSTOR CORP26 citations91
US5949612ASep 7, 1999

Low friction sliding hard disk drive system

CENSTOR CORP47 citations91
US6535361B2Mar 18, 2003

Contact planar magnetoresistive head

CENSTOR CORP7 citations73

IBM

2 patents
US4242710ADec 30, 1980

Thin film head having negative magnetostriction

IBM55 citations92
US4130847ADec 19, 1978

Corrosion resistant thin film head assembly and method for making

IBM76 citations90

SEAGATE TECHNOLOGY LLC

1 patent
US7095585B2Aug 22, 2006

Hard disk drive for perpendicular recording with transducer having submicron gap between pole tips

SEAGATE TECHNOLOGY LLC14 citations92

ULTRATECH STEPPER INC

1 patent
US6671235B1Dec 30, 2003

Method of and apparatus for defining disk tracks in magnetic recording media

ULTRATECH STEPPER INC37 citations92

BOUREZ ALLEN J

1 patent
US8919279B1Dec 30, 2014

Processing system having magnet keeper

BOUREZ ALLEN J4 citations71