Inventor
BENJAMIN TRUDY L
US27 patents
⚠️ This page may combine multiple inventors who share the name “BENJAMIN TRUDY L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEWLETT PACKARD CO
13 patentsUS5929875AJul 27, 1999
Acoustic and ultrasonic monitoring of inkjet droplets
HEWLETT PACKARD CO134 citations98
US6234626B1May 22, 2001
Modular ink-jet hard copy apparatus and methodology
HEWLETT PACKARD CO86 citations97
US6439697B1Aug 27, 2002
Dynamic memory based firing cell of thermal ink jet printhead
HEWLETT PACKARD CO55 citations96
US6264322B1Jul 24, 2001
Modular ink-jet hard copy apparatus and methodology
HEWLETT PACKARD CO66 citations96
US6412901B2Jul 2, 2002
Acoustic and ultrasonic monitoring of inkjet droplets
HEWLETT PACKARD CO52 citations95
US6543882B2Apr 8, 2003
Dynamic memory based firing cell for thermal ink jet printhead
HEWLETT PACKARD CO24 citations92
US6493937B1Dec 17, 2002
Method of manufacture for ink-jet hard copy apparatus using a modular approach to ink-jet technology
HEWLETT PACKARD CO34 citations92
US6398335B1Jun 4, 2002
Magnetic connection of ink-jet printer components
HEWLETT PACKARD CO23 citations92
US6260941B1Jul 17, 2001
Acoustic and ultrasonic monitoring of inkjet droplets
HEWLETT PACKARD CO32 citations92
US6082854AJul 4, 2000
Modular ink-jet hard copy apparatus and methodology
HEWLETT PACKARD CO33 citations92
US5721573AFeb 24, 1998
Cooldown timing system monitors inkjet cartridge ink levels
HEWLETT PACKARD CO26 citations92
US6257717B1Jul 10, 2001
Modular ink-jet hard copy apparatus and methodology
HEWLETT PACKARD CO12 citations82
US5394485AFeb 28, 1995
Method and apparatus for smoothed scaling of facsimile images
HEWLETT PACKARD CO15 citations73
HEWLETT PACKARD DEVELOPMENT CO
13 patentsUS7497536B2Mar 3, 2009
Fluid ejection device
HEWLETT PACKARD DEVELOPMENT CO18 citations92
US7384113B2Jun 10, 2008
Fluid ejection device with address generator
HEWLETT PACKARD DEVELOPMENT CO19 citations92
US6540333B2Apr 1, 2003
Dynamic memory based firing cell for thermal ink jet printhead
HEWLETT PACKARD DEVELOPMENT CO21 citations92
US7543906B2Jun 9, 2009
Fluid ejection device with identification cells
HEWLETT PACKARD DEVELOPMENT CO8 citations84
US7488056B2Feb 10, 2009
Fluid ejection device
HEWLETT PACKARD DEVELOPMENT CO8 citations84
US7278703B2Oct 9, 2007
Fluid ejection device with identification cells
HEWLETT PACKARD DEVELOPMENT CO13 citations84
US7090338B2Aug 15, 2006
Fluid ejection device with fire cells
HEWLETT PACKARD DEVELOPMENT CO11 citations84
US7036914B1May 2, 2006
Fluid ejection device with fire cells
HEWLETT PACKARD DEVELOPMENT CO6 citations74
US6932460B2Aug 23, 2005
Fluid ejection device
HEWLETT PACKARD DEVELOPMENT CO6 citations74
US7794057B2Sep 14, 2010
Fluid ejection device
HEWLETT PACKARD DEVELOPMENT CO4 citations63
US7722144B2May 25, 2010
Fluid ejection device
HEWLETT PACKARD DEVELOPMENT CO4 citations63
US7278715B2Oct 9, 2007
Device with gates configured in loop structures
HEWLETT PACKARD DEVELOPMENT CO2 citations63
US7659589B2Feb 9, 2010
Device with gates configured in loop structures
HEWLETT PACKARD DEVELOPMENT CO0 citations52