DB

Dana H. Brown

IBM: 13 patents #8,581 of 70,183Top 15%
Globalfoundries: 1 patents #2,221 of 4,424Top 55%
Overall (All Time): #351,078 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9408304 Through printed circuit board (PCB) vias Hanyi Ding, Yan Ding, John Ferrario 2016-08-02
6219197 Method and apparatus for servo positioning in a direct access storage device with a transducer read element width greater than 1/3 and less than 1/2 width of a data cylinder Mark David Hagen, John C. Purkett 2001-04-17
6040955 Self servo writing file Thomas C. Christensen, Earl A. Cunningham, Wayne A. Rogelstad 2000-03-21
6035351 Storage of user defined type file data in corresponding select physical format Russell A. Billings, Earl A. Cunningham, Richard Greenberg, Hal Hjalmar Ottesen 2000-03-07
5949603 Self servo writing file using the widest head Thomas C. Christensen, Earl A. Cunningham, Wayne A. Rogelstad 1999-09-07
5828522 Velocity control of head load/unload mechanism in a disk drive using dither Zine-Eddine Boutaghou 1998-10-27
5794056 System for automatic buffering of commands for DASD units 1998-08-11
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 Earl A. Cunningham, Kevin J. Erickson, Richard H. Estry, Thomas Glaser, Mark David Hagen +3 more 1997-10-28
5625508 Method and apparatus for servo demodulation in a direct access storage device Hal Hjalmar Ottesen, Gordon James Smith 1997-04-29
5619387 Disk storage device with spiral data track and incremental error offsets in angularly spaced imbedded concentric servo patterns Hal Hjalmar Ottesen, Earl A. Cunningham, Richard Greenberg 1997-04-08
5570247 Self servo writing file Thomas C. Christensen, Earl A. Cunningham, Wayne A. Rogelstad 1996-10-29
5392290 System and method for preventing direct access data storage system data loss from mechanical shock during write operation Kevin J. Erickson, Daniel Good, Richard Greenberg, Peter M. Herman, Hal Hjalmar Ottesen 1995-02-21
5343340 Digital servo signal demodulation method and apparatus utilizing a partial-response maximum-likelihood (PRML) channel in a disk file Zine-Eddine Boutaghou, Kevin J. Erickson, Richard Greenberg 1994-08-30
5108184 Non-invasive laser positioning system for rotary actuators Timothy J. Chainer, Wayne J. Sohn 1992-04-28