David H. F. Harper

Person

Vail, AZ, US

People

Patents Grantslast 30 patents

Information Patent Grant
Reworkable tape track following actuator
- Patent number 12,266,387
- Issue date Apr 1, 2025
- International Business Machines Corporation
- Mark Alfred Lantz
- G11 - INFORMATION STORAGE
Information Patent Grant
Tape drive reel including damping to reduce track following errors
- Patent number 11,922,982
- Issue date Mar 5, 2024
- International Business Machines Corporation
- David Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Flexible electrical cable with four copper layers
- Patent number 11,842,829
- Issue date Dec 12, 2023
- International Business Machines Corporation
- Sassan K. Shahidi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Tape erase element included in a tape erase device to erase a tape...
- Patent number 11,837,263
- Issue date Dec 5, 2023
- International Business Machines Corporation
- David Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Portable tape storage on a mobile platform
- Patent number 11,621,019
- Issue date Apr 4, 2023
- International Business Machines Corporation
- David Harper
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Blocking mechanism for a storage cartridge to prevent insertion int...
- Patent number 11,335,377
- Issue date May 17, 2022
- International Business Machines Corporation
- David Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Semi-flexible structure for micro-positioning a write/read head
- Patent number 11,056,139
- Issue date Jul 6, 2021
- International Business Machines Corporation
- David Harper
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Non-interfering micro-positioning system utilizing piezoelectric el...
- Patent number 10,957,362
- Issue date Mar 23, 2021
- International Business Machines Corporation
- David Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Dynamic tape guide bearing tilt mechanism
- Patent number 10,854,236
- Issue date Dec 1, 2020
- International Business Machines Corporation
- David Harper
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Damping lateral tape motion disturbances
- Patent number 10,832,724
- Issue date Nov 10, 2020
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Attenuating reaction forces caused by externally supported stators...
- Patent number 10,789,980
- Issue date Sep 29, 2020
- International Business Machines Corrporation
- David H. F. Harper
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Attenuating reaction forces caused by internally supported stators...
- Patent number 10,783,919
- Issue date Sep 22, 2020
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Tape drive bearing temperature control
- Patent number 10,679,662
- Issue date Jun 9, 2020
- International Business Machines Corporation
- Nhan X. Bui
- G11 - INFORMATION STORAGE
Information Patent Grant
Measuring servo reader span on a magnetic recording head
- Patent number 10,614,846
- Issue date Apr 7, 2020
- International Business Machines Corporation
- David Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Planar mono coil for two stage head actuator
- Patent number 10,580,443
- Issue date Mar 3, 2020
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Damping lateral tape motion disturbances
- Patent number 10,553,245
- Issue date Feb 4, 2020
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Tape drive bearing temperature control
- Patent number 10,515,663
- Issue date Dec 24, 2019
- International Business Machines Corporation
- Nhan X. Bui
- G11 - INFORMATION STORAGE
Information Patent Grant
Attenuating reaction forces caused by internally supported stators...
- Patent number 10,424,332
- Issue date Sep 24, 2019
- International Business Machines Corporation
- David H. F. Harper
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Attenuating reaction forces caused by externally supported stators...
- Patent number 10,424,333
- Issue date Sep 24, 2019
- International Business Machines Corporation
- David H. F. Harper
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Tape drive temperature control for media dimensional stability
- Patent number 10,410,670
- Issue date Sep 10, 2019
- International Business Machines Corporation
- Nhan X. Bui
- G11 - INFORMATION STORAGE
Information Patent Grant
Achieving fine motion between modules in a magnetic head
- Patent number 10,395,682
- Issue date Aug 27, 2019
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Tape drive bearing temperature control
- Patent number 10,395,687
- Issue date Aug 27, 2019
- International Business Machines Corporation
- Nhan X. Bui
- G11 - INFORMATION STORAGE
Information Patent Grant
Reduced reel motor disturbances in a tape drive system
- Patent number 10,374,475
- Issue date Aug 6, 2019
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Tape drive temperature control for media dimensional stability
- Patent number 10,332,554
- Issue date Jun 25, 2019
- International Business Machines Corporation
- Nhan X. Bui
- G11 - INFORMATION STORAGE
Information Patent Grant
Planar mono coil for two stage head actuator
- Patent number 10,236,023
- Issue date Mar 19, 2019
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Actuator coil temperature estimation using skew values
- Patent number 9,997,181
- Issue date Jun 12, 2018
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Damping lateral tape motion disturbances
- Patent number 9,984,720
- Issue date May 29, 2018
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Utilization of multiple writer modules for simultaneously writing t...
- Patent number 9,947,354
- Issue date Apr 17, 2018
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Achieving fine motion between modules in a magnetic head
- Patent number 9,892,751
- Issue date Feb 13, 2018
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Grant
Reduced reel motor disturbances in a tape drive system
- Patent number 9,685,189
- Issue date Jun 20, 2017
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
TAPE DRIVE REEL INCLUDING DAMPING TO REDUCE TRACK FOLLOWING ERRORS
- Publication number 20240087599
- Publication date Mar 14, 2024
- International Business Machines Corporation
- David Harper
- G11 - INFORMATION STORAGE
Information Patent Application
FLEXIBLE ELECTRICAL CABLE WITH FOUR COPPER LAYERS
- Publication number 20230298782
- Publication date Sep 21, 2023
- International Business Machines Corporation
- Sassan K. Shahidi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
NON-INTERFERING MICRO-POSITIONING SYSTEM UTILIZING PIEZOELECTRIC EL...
- Publication number 20210074330
- Publication date Mar 11, 2021
- International Business Machines Corporation
- David Harper
- G11 - INFORMATION STORAGE
Information Patent Application
SEMI-FLEXIBLE STRUCTURE FOR MICRO-POSITIONING A WRITE/READ HEAD
- Publication number 20210074323
- Publication date Mar 11, 2021
- International Business Machines Corporation
- David Harper
- G11 - INFORMATION STORAGE
Information Patent Application
PORTABLE TAPE STORAGE ON A MOBILE PLATFORM
- Publication number 20210035601
- Publication date Feb 4, 2021
- International Business Machines Corporation
- David Harper
- B60 - VEHICLES IN GENERAL
Information Patent Application
DAMPING LATERAL TAPE MOTION DISTURBANCES
- Publication number 20200058325
- Publication date Feb 20, 2020
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Application
TAPE DRIVE BEARING TEMPERATURE CONTROL
- Publication number 20200035269
- Publication date Jan 30, 2020
- International Business Machines Corporation
- Nhan X. Bui
- G11 - INFORMATION STORAGE
Information Patent Application
ATTENUATING REACTION FORCES CAUSED BY INTERNALLY SUPPORTED STATORS...
- Publication number 20190311739
- Publication date Oct 10, 2019
- International Business Machines Corporation
- David H. F. Harper
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
ATTENUATING REACTION FORCES CAUSED BY EXTERNALLY SUPPORTED STATORS...
- Publication number 20190311738
- Publication date Oct 10, 2019
- International Business Machines Corporation
- David H. F. Harper
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
TAPE DRIVE BEARING TEMPERATURE CONTROL
- Publication number 20190304500
- Publication date Oct 3, 2019
- International Business Machines Corporation
- Nhan X. Bui
- G11 - INFORMATION STORAGE
Information Patent Application
TAPE DRIVE TEMPERATURE CONTROL FOR MEDIA DIMENSIONAL STABILITY
- Publication number 20190267035
- Publication date Aug 29, 2019
- International Business Machines Corporation
- Nhan X. Bui
- G11 - INFORMATION STORAGE
Information Patent Application
TAPE DRIVE BEARING TEMPERATURE CONTROL
- Publication number 20190267034
- Publication date Aug 29, 2019
- International Business Machines Corporation
- Nhan X. Bui
- G11 - INFORMATION STORAGE
Information Patent Application
ATTENUATING REACTION FORCES CAUSED BY INTERNALLY SUPPORTED STATORS...
- Publication number 20190214049
- Publication date Jul 11, 2019
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Application
ATTENUATING REACTION FORCES CAUSED BY EXTERNALLY SUPPORTED STATORS...
- Publication number 20190214050
- Publication date Jul 11, 2019
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Application
PLANAR MONO COIL FOR TWO STAGE HEAD ACTUATOR
- Publication number 20190147910
- Publication date May 16, 2019
- International Business Machines Corporation
- David H.F. Harper
- G11 - INFORMATION STORAGE
Information Patent Application
DAMPING LATERAL TAPE MOTION DISTURBANCES
- Publication number 20180211690
- Publication date Jul 26, 2018
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Application
ACHIEVING FINE MOTION BETWEEN MODULES IN A MAGNETIC HEAD
- Publication number 20180122412
- Publication date May 3, 2018
- International Business Machines Corporation
- David H.F. Harper
- G11 - INFORMATION STORAGE
Information Patent Application
ACTUATOR COIL TEMPERATURE ESTIMATION USING SKEW VALUES
- Publication number 20170148476
- Publication date May 25, 2017
- International Business Machines Corporation
- David H.F. Harper
- G11 - INFORMATION STORAGE
Information Patent Application
PLANAR MONO COIL FOR TWO STAGE HEAD ACTUATOR
- Publication number 20170092312
- Publication date Mar 30, 2017
- International Business Machines Corporation
- David H.F. Harper
- G11 - INFORMATION STORAGE
Information Patent Application
ACTUATOR COIL TEMPERATURE ESTIMATION USING SKEW VALUES
- Publication number 20170076746
- Publication date Mar 16, 2017
- International Business Machines Corporation
- David H.F. Harper
- G11 - INFORMATION STORAGE
Information Patent Application
REDUCED REEL MOTOR DISTURBANCES IN A TAPE DRIVE SYSTEM
- Publication number 20160329763
- Publication date Nov 10, 2016
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Application
DEVICE AND METHOD FOR CONTROLLING THE POSITION OF A HEAD RELATIVE T...
- Publication number 20150325262
- Publication date Nov 12, 2015
- International Business Machines Corporation
- ARMANDO J. ARGUMEDO
- G11 - INFORMATION STORAGE
Information Patent Application
REDUCED REEL MOTOR DISTURBANCES IN A TAPE DRIVE SYSTEM
- Publication number 20150294683
- Publication date Oct 15, 2015
- International Business Machines Corporation
- David H. F. Harper
- G11 - INFORMATION STORAGE
Information Patent Application
DEVICE AND METHOD FOR CONTROLLING THE POSITION OF A HEAD RELATIVE T...
- Publication number 20150009590
- Publication date Jan 8, 2015
- International Business Machines Corporation
- Armando J. Argumedo
- G11 - INFORMATION STORAGE
Information Patent Application
ENABLING PARTIAL WRITE DURING A TAPE SKEW
- Publication number 20140002916
- Publication date Jan 2, 2014
- International Business Machines Corporation
- David H. Harper
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETICALLY BIASED TILTING ROLLER BEARING TAPE GUIDANCE
- Publication number 20130021693
- Publication date Jan 24, 2013
- International Business Machines Corporation
- Armando Jesus Argumedo
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETICALLY BIASED TILTING ROLLER BEARING TAPE GUIDANCE
- Publication number 20130021692
- Publication date Jan 24, 2013
- International Business Machines Corporation
- Armando Jesus Argumedo
- G11 - INFORMATION STORAGE
Information Patent Application
Method To Minimize The Effects Of Tape Skew And Tape Dimensional St...
- Publication number 20110051283
- Publication date Mar 3, 2011
- David H. Harper
- G11 - INFORMATION STORAGE
Information Patent Application
ACTUATOR ASSEMBLY METHOD
- Publication number 20080256786
- Publication date Oct 23, 2008
- David Harper
- G11 - INFORMATION STORAGE
Information Patent Application
Actuator assembly
- Publication number 20070058298
- Publication date Mar 15, 2007
- International Business Machines Corporation
- David Harper
- G11 - INFORMATION STORAGE

David H. F. Harper

Person

Patents Grantslast 30 patents

Reworkable tape track following actuator

Tape drive reel including damping to reduce track following errors

Flexible electrical cable with four copper layers

Tape erase element included in a tape erase device to erase a tape...

Portable tape storage on a mobile platform

Blocking mechanism for a storage cartridge to prevent insertion int...

Semi-flexible structure for micro-positioning a write/read head

Non-interfering micro-positioning system utilizing piezoelectric el...

Dynamic tape guide bearing tilt mechanism

Damping lateral tape motion disturbances

Attenuating reaction forces caused by externally supported stators...

Attenuating reaction forces caused by internally supported stators...

Tape drive bearing temperature control

Measuring servo reader span on a magnetic recording head

Planar mono coil for two stage head actuator

Damping lateral tape motion disturbances

Tape drive bearing temperature control

Attenuating reaction forces caused by internally supported stators...

Attenuating reaction forces caused by externally supported stators...

Tape drive temperature control for media dimensional stability

Achieving fine motion between modules in a magnetic head

Tape drive bearing temperature control

Reduced reel motor disturbances in a tape drive system

Tape drive temperature control for media dimensional stability

Planar mono coil for two stage head actuator

Actuator coil temperature estimation using skew values

Damping lateral tape motion disturbances

Utilization of multiple writer modules for simultaneously writing t...

Achieving fine motion between modules in a magnetic head

Reduced reel motor disturbances in a tape drive system

Patents Applicationslast 30 patents

TAPE DRIVE REEL INCLUDING DAMPING TO REDUCE TRACK FOLLOWING ERRORS

FLEXIBLE ELECTRICAL CABLE WITH FOUR COPPER LAYERS

NON-INTERFERING MICRO-POSITIONING SYSTEM UTILIZING PIEZOELECTRIC EL...

SEMI-FLEXIBLE STRUCTURE FOR MICRO-POSITIONING A WRITE/READ HEAD

PORTABLE TAPE STORAGE ON A MOBILE PLATFORM

DAMPING LATERAL TAPE MOTION DISTURBANCES

TAPE DRIVE BEARING TEMPERATURE CONTROL

ATTENUATING REACTION FORCES CAUSED BY INTERNALLY SUPPORTED STATORS...

ATTENUATING REACTION FORCES CAUSED BY EXTERNALLY SUPPORTED STATORS...

TAPE DRIVE BEARING TEMPERATURE CONTROL

TAPE DRIVE TEMPERATURE CONTROL FOR MEDIA DIMENSIONAL STABILITY

TAPE DRIVE BEARING TEMPERATURE CONTROL

ATTENUATING REACTION FORCES CAUSED BY INTERNALLY SUPPORTED STATORS...

ATTENUATING REACTION FORCES CAUSED BY EXTERNALLY SUPPORTED STATORS...

PLANAR MONO COIL FOR TWO STAGE HEAD ACTUATOR

DAMPING LATERAL TAPE MOTION DISTURBANCES

ACHIEVING FINE MOTION BETWEEN MODULES IN A MAGNETIC HEAD

ACTUATOR COIL TEMPERATURE ESTIMATION USING SKEW VALUES

PLANAR MONO COIL FOR TWO STAGE HEAD ACTUATOR

ACTUATOR COIL TEMPERATURE ESTIMATION USING SKEW VALUES

REDUCED REEL MOTOR DISTURBANCES IN A TAPE DRIVE SYSTEM

DEVICE AND METHOD FOR CONTROLLING THE POSITION OF A HEAD RELATIVE T...

REDUCED REEL MOTOR DISTURBANCES IN A TAPE DRIVE SYSTEM

DEVICE AND METHOD FOR CONTROLLING THE POSITION OF A HEAD RELATIVE T...

ENABLING PARTIAL WRITE DURING A TAPE SKEW

MAGNETICALLY BIASED TILTING ROLLER BEARING TAPE GUIDANCE

MAGNETICALLY BIASED TILTING ROLLER BEARING TAPE GUIDANCE

Method To Minimize The Effects Of Tape Skew And Tape Dimensional St...

ACTUATOR ASSEMBLY METHOD

Actuator assembly