JS

John Jeffrey Stephenson

IBM: 12 patents #9,222 of 70,183Top 15%
HG HGST: 1 patents #1,032 of 1,677Top 65%
Overall (All Time): #356,510 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6636562 Unconstrained equalization method and apparatus with gain and timing bias to control runaway for direct access storage device (DASD) data channels Richard Leo Galbraith 2003-10-21
6532259 Equalization method and apparatus with gain adjustment for direct access storage device (DASD) data channels Gregory S. Bush 2003-03-11
6393511 Multi-track density direct access storage device David W. Albrecht, Wayne Leung Cheung, Kok-Kia Chew, Ju-Hi J. Hong 2002-05-21
6307705 Method and apparatus for reducing track switch latency in a disk drive Clark A. Anderson, Todd B. Anderson, Gerald L. Cadloni, Earl A. Cunningham, Michael Hicken +1 more 2001-10-23
6222879 Self contained equalization method and apparatus Roy D. Cideciyan, Jonathan Darrel Coker, Evangelos S. Eleftheriou, Richard Leo Galbraith 2001-04-24
6104566 Direct access storage device (DASD) with a variable spindle rotation speed 2000-08-15
5999351 Multi-track density direct access storage device David W. Albrecht, Wayne Leung Cheung, Kok-Kia Chew, Ju-Hi J. Hong 1999-12-07
5754357 Method and apparatus for moving a disk drive actuator away from a magnetic latch Todd B. Anderson, Jeffrey F. Boigenzahn, Amy L. Warner 1998-05-19
5682274 Method and apparatus for positioning transducers to correct for read and write element misregistration offsets which vary dependent on rotary actuator angular position across a disk medium Dana H. Brown, Earl A. Cunningham, Kevin J. Erickson, Richard H. Estry, Thomas Glaser +3 more 1997-10-28
5485323 Method and apparatus for moving a disk drive actuator away from a magnetic latch Todd B. Anderson, Jeffrey F. Boigenzahn, Amy L. Warner 1996-01-16
5287046 Method and system for actuator control for direct access storage devices Gary Dale Carpenter, Robert Jansen, Eugene F. Plutowski 1994-02-15
5241433 Disk drive servo control Todd B. Anderson, Mark E. Bofferding, Martin Raymond Green, Mark David Hagen, Joseph M. Humel +3 more 1993-08-31
5193036 Transducer head skew arrangement for disk drive system Martin Raymond Green, Randolph B. Heineke 1993-03-09
5119250 Method and apparatus for performing a seek Martin Raymond Green, Michael C. Stich 1992-06-02