Robert D. Hempstead — 11 Patents at Sentera

Robert D. Hempstead has been granted 11 US patents while listed as an inventor at Sentera. The first was granted in 1980 and the most recent in December 2014. Robert D. Hempstead ranks #435,149 of 4,157,543 US inventors in our database (top 10.5%). Patent records list Robert D. Hempstead in معلمی نژاد, CA, US.

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
8919279	Processing system having magnet keeper	Allen J. Bourez, Jinliang Chen, Yew Ming Chiong	2014-12-30	$6,900,000
7541105	Epitaxial ferroelectric and magnetic recording structures including graded lattice matching layers	Thomas F. Ambrose, Joachim Walter Ahner, Kai-Chieh Chang, Maissarath Nassirou, Mark Ian Lutwyche	2009-06-02	$8,990,000
7095585	Hard disk drive for perpendicular recording with transducer having submicron gap between pole tips	Alexander Payne, William C. Cain, Michael E. Devillier, Harold J. Hamilton, Darren T. Imai +2 more	2006-08-22	$19,647,000
6671235	Method of and apparatus for defining disk tracks in magnetic recording media	Andrew M. Hawryluk, David A. Markle	2003-12-30	$8,119,000
6535361	Contact planar magnetoresistive head	William C. Cain, Michael E. Devillier, Harold J. Hamilton, Darren T. Imai, Dimitre Latev	2003-03-18
6493191	Planar magnetic ring head for contact recording with a rigid disk	William C. Cain, Richard Dyche Anderson, Michael A. Baldwinson, Keith R. Berding, Michael E. Devillier +8 more	2002-12-10
6320725	Hard disk drive having ring head with predominantly perpendicular media fields	Alexander Payne, William C. Cain, Michael E. Devillier, Harold J. Hamilton, Darren T. Imai +3 more	2001-11-20
6212047	Hard disk drive with magnetoresistive head and perpendicular media	Alexander Payne, William C. Cain, Michael E. Devillier, Harold J. Hamilton, Darren T. Imai +3 more	2001-04-03
6198607	Contact planar magnetoresistive head	William C. Cain, Michael E. Devillier, Harold J. Hamilton, Darren T. Imai, Dimitre Latev	2001-03-06
5949612	Low friction sliding hard disk drive system	Christopher S. Gudeman, Michael H. Azarian, Michael A. Baldwinson, Keith R. Berding, Kaynam Chun +4 more	1999-09-07
4242710	Thin film head having negative magnetostriction	James Bryant Money	1980-12-30	$54,084,000

Robert D. Hempstead — 11 Patents

Issued Patents All Time

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