Inventor
HARPER DAVID
US39 patents
⚠️ This page may combine multiple inventors who share the name “HARPER DAVID”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IBM
16 patentsUS10854236B1Dec 1, 2020
Dynamic tape guide bearing tilt mechanism
IBM8 citations84
US7538980B2May 26, 2009
Actuator assembly
IBM8 citations84
US12266387B1Apr 1, 2025
Reworkable tape track following actuator
IBM2 citations75
US11056139B2Jul 6, 2021
Semi-flexible structure for micro-positioning a write/read head
IBM4 citations73
US10957362B1Mar 23, 2021
Non-interfering micro-positioning system utilizing piezoelectric elements
IBM6 citations73
US7414812B2Aug 19, 2008
Actuator assembly
IBM2 citations63
US12555599B2Feb 17, 2026
Folded spring tape track following actuator
IBM0 citations62
US11922982B1Mar 5, 2024
Tape drive reel including damping to reduce track following errors
IBM0 citations62
US11842829B2Dec 12, 2023
Flexible electrical cable with four copper layers
IBM0 citations62
US11837263B1Dec 5, 2023
Tape erase element included in a tape erase device to erase a tape medium
IBM0 citations62
US11335377B1May 17, 2022
Blocking mechanism for a storage cartridge to prevent insertion into a storage drive
IBM0 citations62
US10614846B1Apr 7, 2020
Measuring servo reader span on a magnetic recording head
IBM1 citations62
US11621019B2Apr 4, 2023
Portable tape storage on a mobile platform
IBM0 citations60
US12462836B1Nov 4, 2025
Spring suspension with independent reader and writer following actuator
IBM0 citations53
US7845067B2Dec 7, 2010
Actuator assembly method
IBM0 citations52
US7660076B2Feb 9, 2010
Helical gear actuator for tape drive systems
IBM0 citations52
HARPER DAVID
7 patentsUS10226147B2Mar 12, 2019
Beverage brewing device
HARPER DAVID20 citations93
US5046284ASep 10, 1991
Anti-theft vehicle window
HARPER DAVID34 citations92
US10694883B2Jun 30, 2020
Beverage brewing method
HARPER DAVID5 citations83
US8475787B2Jul 2, 2013
Beneficial effects of bacteriophage treatments
HARPER DAVID7 citations83
US11297971B2Apr 12, 2022
Beverage brewing method
HARPER DAVID4 citations72
US9209091B1Dec 8, 2015
Integrated monolithic galvanic isolator
HARPER DAVID5 citations71
US8412889B2Apr 2, 2013
Low-level conditional synchronization support
HARPER DAVID1 citations51