DH

David H. F. Harper

IBM: 58 patents #1,384 of 70,183Top 2%
MI Miniscribe: 1 patents #10 of 36Top 30%
📍 Vail, AZ: #6 of 174 inventorsTop 4%
🗺 Arizona: #322 of 32,909 inventorsTop 1%
Overall (All Time): #39,961 of 4,157,543Top 1%
59
Patents All Time

Issued Patents All Time

Showing 26–50 of 59 patents

Patent #TitleCo-InventorsDate
9997181 Actuator coil temperature estimation using skew values Randy C. Inch 2018-06-12
9984720 Damping lateral tape motion disturbances Peter Reininger 2018-05-29
9947354 Utilization of multiple writer modules for simultaneously writing two times the number of data tracks in a compact form factor 2018-04-17
9892751 Achieving fine motion between modules in a magnetic head 2018-02-13
9685189 Reduced reel motor disturbances in a tape drive system Kevin B. Judd 2017-06-20
9626993 Actuator coil temperature estimation using skew values Randy C. Inch 2017-04-18
9583126 Dual-path flex circuit Robert G. Biskeborn, Hoodin Hamidi, Sassan K. Shahidi 2017-02-28
9548077 Detecting and compensating for external vibration in a tape drive David L. Swanson 2017-01-17
9466334 Monolithic tape head and actuator for high density recording Robert G. Biskeborn 2016-10-11
9449637 Reduced reel motor disturbances in a tape drive system Hugo E. Rothuizen 2016-09-20
9424869 Device and method for controlling the position of a head relative to a tape within a tape transport system Armando Jesus Argumedo, Nhan X. Bui, Randy C. Inch, Kevin B. Judd, Mark A. Lantz +2 more 2016-08-23
9355663 Multiple degree of freedom actuator assemblies having flexure based pivot functionality Hugo E. Rothuizen 2016-05-31
9251821 Attenuation of a pitch mode for actuator assemblies having multiple degrees of freedom Hugo E. Rothuizen 2016-02-02
9087539 Device and method for controlling the position of a head relative to a tape within a tape transport system Armando Jesus Argumedo, Nhan X. Bui, Randy C. Inch, Kevin B. Judd, Mark A. Lantz +2 more 2015-07-21
8958170 Management of tape drive quality using discrete fourier transform analysis 2015-02-17
8749922 Magnetically biased tilting roller bearing tape guidance Armando Jesus Argumedo, Nhan X. Bui, William M. Dyer, Reed A. Hancock, Wayne Isami Imaino +1 more 2014-06-10
8743508 Magnetically biased tilting roller bearing tape guidance Armando Jesus Argumedo, Nhan X. Bui, William M. Dyer, Reed A. Hancock, Wayne Isami Imaino +1 more 2014-06-03
8638523 Enabling partial write during a tape skew 2014-01-28
8270114 Magnetically biased tilting roller bearing tape guidance Armando Jesus Argumedo, Nhan X. Bui, William M. Dyer, Reed A. Hancock, Wayne Isami Imaino +1 more 2012-09-18
8270108 Method to minimize the effects of tape skew and tape dimensional stability Robert A. Hutchins, Peter VanderSalm Koeppe, Johnny L. Teale 2012-09-18
8035926 System including a pivot assembly for adjusting misalignment and skew between a read/write head and a flexible data storage media 2011-10-11
7845067 Actuator assembly method 2010-12-07
7839598 Balanced linkage actuation of tape head 2010-11-23
7724466 Method and system for servo stripe width detection and compensation Nhan X. Bui, Edwin R. Childers, Reed A. Hancock, Kazuhiro Tsuruta 2010-05-25
7660076 Helical gear actuator for tape drive systems 2010-02-09