Inventor
HAMMERSTAD DIANE R
US30 patents
⚠️ This page may combine multiple inventors who share the name “HAMMERSTAD DIANE R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEWLETT PACKARD DEVELOPMENT CO
28 patentsUS6911992B2Jun 28, 2005
Poster preparation system and method
HEWLETT PACKARD DEVELOPMENT CO20 citations90
US9895888B2Feb 20, 2018
Fluid flow structure
HEWLETT PACKARD DEVELOPMENT CO5 citations84
US10365226B2Jul 30, 2019
Microfluidic optical fluid sensor
HEWLETT PACKARD DEVELOPMENT CO2 citations73
US11680957B2Jun 20, 2023
Microfluidic flow sensor
HEWLETT PACKARD DEVELOPMENT CO2 citations72
US11207827B2Dec 28, 2021
Energy dosing for additive manufacturing
HEWLETT PACKARD DEVELOPMENT CO2 citations72
US11135579B2Oct 5, 2021
Apparatus with encoded media to indicate dispensing locations for pipette dispenser
HEWLETT PACKARD DEVELOPMENT CO2 citations71
US10348923B2Jul 9, 2019
Printer configuration for use of printing material
HEWLETT PACKARD DEVELOPMENT CO3 citations65
US12337317B2Jun 24, 2025
Cell poration and transfection apparatuses
HEWLETT PACKARD DEVELOPMENT CO1 citations64
US12145149B2Nov 19, 2024
Disposable microfluidic cassettes
HEWLETT PACKARD DEVELOPMENT CO0 citations62
US12076917B2Sep 3, 2024
Energy dosing for additive manufacturing
HEWLETT PACKARD DEVELOPMENT CO0 citations62
US12044613B2Jul 23, 2024
Particle classifying
HEWLETT PACKARD DEVELOPMENT CO0 citations62
US12025549B2Jul 2, 2024
Cell analyzers
HEWLETT PACKARD DEVELOPMENT CO0 citations62
US11559987B2Jan 24, 2023
Fluidic die with surface condition monitoring
HEWLETT PACKARD DEVELOPMENT CO0 citations62
US11279137B2Mar 22, 2022
Droplet ejectors aimed at target media
HEWLETT PACKARD DEVELOPMENT CO0 citations62
US7562036B2Jul 14, 2009
System and method for conveying image assets to a recipient
HEWLETT PACKARD DEVELOPMENT CO4 citations62
US11547993B2Jan 10, 2023
Droplet ejectors with target media
HEWLETT PACKARD DEVELOPMENT CO0 citations60
US11136703B2Oct 5, 2021
Mixing chamber for laundry supplies
HEWLETT PACKARD DEVELOPMENT CO0 citations57
US12480086B2Nov 25, 2025
Chemical lysis systems
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US11725175B2Aug 15, 2023
Electroporation
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US10384450B2Aug 20, 2019
Inkjet printhead
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US10328694B2Jun 25, 2019
Printed circuit board with recessed pocket for fluid droplet ejection die
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US10232618B2Mar 19, 2019
Fluid flow structure
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US11203017B2Dec 21, 2021
Microfluidic apparatuses
HEWLETT PACKARD DEVELOPMENT CO0 citations51
US7315831B2Jan 1, 2008
System and method for conveying image assets to a recipient
HEWLETT PACKARD DEVELOPMENT CO0 citations51
US12270820B2Apr 8, 2025
Ejection subassembly pitches to match nanowell spacing
HEWLETT PACKARD DEVELOPMENT CO0 citations50
US12539514B2Feb 3, 2026
Detecting passage of a particle into a target location
HEWLETT PACKARD DEVELOPMENT CO0 citations48
US9898235B2Feb 20, 2018
Marking agent credit adjustments
HEWLETT PACKARD DEVELOPMENT CO0 citations48
US9098217B2Aug 4, 2015
Causing an action to occur in response to scanned data
HEWLETT PACKARD DEVELOPMENT CO0 citations36