Inventor
MACKENZIE MARK H
US63 patents
⚠️ This page may combine multiple inventors who share the name “MACKENZIE MARK H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEWLETT PACKARD DEVELOPMENT CO
35 patentsUS6808241B2Oct 26, 2004
Fluid ejection device
HEWLETT PACKARD DEVELOPMENT CO46 citations93
US6890064B2May 10, 2005
Energy balanced printhead design
HEWLETT PACKARD DEVELOPMENT CO12 citations92
US6866364B2Mar 15, 2005
Printhead having drop generators in staggered axis groups
HEWLETT PACKARD DEVELOPMENT CO17 citations92
US6860587B2Mar 1, 2005
Ink jet printhead
HEWLETT PACKARD DEVELOPMENT CO26 citations92
US6722759B2Apr 20, 2004
Ink jet printhead
HEWLETT PACKARD DEVELOPMENT CO24 citations92
US6585352B1Jul 1, 2003
Compact high-performance, high-density ink jet printhead
HEWLETT PACKARD DEVELOPMENT CO41 citations92
US8888212B2Nov 18, 2014
Printhead spacing
HEWLETT PACKARD DEVELOPMENT CO6 citations84
US8348373B2Jan 8, 2013
Firing signal forwarding in a fluid ejection device
HEWLETT PACKARD DEVELOPMENT CO8 citations84
US6902252B1Jun 7, 2005
Fluid ejection device with staggered ink drop generators
HEWLETT PACKARD DEVELOPMENT CO14 citations84
US6767089B2Jul 27, 2004
Slotted semiconductor substrate having microelectronics integrated thereon
HEWLETT PACKARD DEVELOPMENT CO18 citations79
US6726311B2Apr 27, 2004
Energy balanced printhead design
HEWLETT PACKARD DEVELOPMENT CO10 citations74
US6698857B2Mar 2, 2004
Method and apparatus for transferring information to a printhead
HEWLETT PACKARD DEVELOPMENT CO11 citations73
US10343433B2Jul 9, 2019
Skew sensor calibration
HEWLETT PACKARD DEVELOPMENT CO5 citations72
US6945634B2Sep 20, 2005
Thin film coating of a slotted substrate and techniques for forming slotted substrates
HEWLETT PACKARD DEVELOPMENT CO7 citations71
US6648732B2Nov 18, 2003
Thin film coating of a slotted substrate and techniques for forming slotted substrates
HEWLETT PACKARD DEVELOPMENT CO9 citations71
US9268023B2Feb 23, 2016
Drop detection
HEWLETT PACKARD DEVELOPMENT CO5 citations68
US9199461B2Dec 1, 2015
Print head die
HEWLETT PACKARD DEVELOPMENT CO2 citations63
US7048355B2May 23, 2006
High-performance, high-density ink jet printhead having multiple modes of operation
HEWLETT PACKARD DEVELOPMENT CO2 citations63
US6883889B2Apr 26, 2005
Fluid ejection device
HEWLETT PACKARD DEVELOPMENT CO2 citations63
US10479110B2Nov 19, 2019
Partially dried inkjet media fusers
HEWLETT PACKARD DEVELOPMENT CO1 citations62
US10343397B2Jul 9, 2019
Printer cartridge with multiple fluid chambers in fluid communication
HEWLETT PACKARD DEVELOPMENT CO1 citations62
US7083267B2Aug 1, 2006
Slotted substrates and methods and systems for forming same
HEWLETT PACKARD DEVELOPMENT CO2 citations62
US6582042B1Jun 24, 2003
Method and apparatus for transferring information to a printhead
HEWLETT PACKARD DEVELOPMENT CO4 citations62
US9937714B2Apr 10, 2018
Print head die with thermal control
HEWLETT PACKARD DEVELOPMENT CO1 citations61
US11040329B2Jun 22, 2021
Density classifiers based on plane regions
HEWLETT PACKARD DEVELOPMENT CO0 citations60
US10894429B2Jan 19, 2021
Determination of printer dryer target temperatures
HEWLETT PACKARD DEVELOPMENT CO0 citations60
US9221256B2Dec 29, 2015
Print head die
HEWLETT PACKARD DEVELOPMENT CO2 citations58
US11220107B2Jan 11, 2022
Printheads
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US10780699B2Sep 22, 2020
Printhead with removable printhead cover
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US10661567B2May 26, 2020
Printheads and methods of fabricating a printhead
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US10434770B2Oct 8, 2019
Printing element temperature adjustment
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US10427406B2Oct 1, 2019
Print bar sensors
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US10363745B2Jul 30, 2019
Printheads with pressure equalization
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US10207497B2Feb 19, 2019
Selecting nozzles
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US9994014B2Jun 12, 2018
Selecting nozzles
HEWLETT PACKARD DEVELOPMENT CO0 citations52
HEWLETT PACKARD CO
11 patentsUS6481817B1Nov 19, 2002
Method and apparatus for ejecting ink
HEWLETT PACKARD CO35 citations92
US6431686B2Aug 13, 2002
Fluid ejection device controlled by electrically isolated primitives
HEWLETT PACKARD CO17 citations92
US6422676B1Jul 23, 2002
Compact ink jet printhead
HEWLETT PACKARD CO25 citations92
US6315389B1Nov 13, 2001
Printhead having different center to center spacings between rows of nozzles
HEWLETT PACKARD CO21 citations92
US6267468B1Jul 31, 2001
Printhead substrate having a mixture of single and double sided elongate ink feed channels
HEWLETT PACKARD CO49 citations92
US6402279B1Jun 11, 2002
Inkjet printhead and method for the same
HEWLETT PACKARD CO15 citations84
US6523935B2Feb 25, 2003
Narrow ink jet printhead
HEWLETT PACKARD CO12 citations74
US6488363B2Dec 3, 2002
Energy balanced printhead design
HEWLETT PACKARD CO10 citations74
US6412917B1Jul 2, 2002
Energy balanced printhead design
HEWLETT PACKARD CO9 citations74
US6478404B2Nov 12, 2002
Ink jet printhead
HEWLETT PACKARD CO7 citations73
US6305774B1Oct 23, 2001
Printhead substrate having an ink jet primitive structure that spans both edges of an ink feed channel
HEWLETT PACKARD CO7 citations73
HEWLETT PACKARD DEVELOPMENT CO LP
3 patentsGHOZEIL ADAM L
1 patentShowing the top 50 of 63 patents by PatentIndex Score.