Inventor
TRUEBA KENNETH E
US57 patents
⚠️ This page may combine multiple inventors who share the name “TRUEBA KENNETH E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEWLETT PACKARD CO
35 patentsUS6017117AJan 25, 2000
Printhead with pump driven ink circulation
HEWLETT PACKARD CO463 citations99
US6003977ADec 21, 1999
Bubble valving for ink-jet printheads
HEWLETT PACKARD CO228 citations99
US5278584AJan 11, 1994
Ink delivery system for an inkjet printhead
HEWLETT PACKARD CO381 citations99
US6000787ADec 14, 1999
Solid state ink jet print head
HEWLETT PACKARD CO94 citations98
US5560837AOct 1, 1996
Method of making ink-jet component
HEWLETT PACKARD CO144 citations98
US5387314AFeb 7, 1995
Fabrication of ink fill slots in thermal ink-jet printheads utilizing chemical micromachining
HEWLETT PACKARD CO287 citations98
US4882595ANov 21, 1989
Hydraulically tuned channel architecture
HEWLETT PACKARD CO182 citations98
US5635968AJun 3, 1997
Thermal inkjet printer printhead with offset heater resistors
HEWLETT PACKARD CO171 citations97
US6305790B1Oct 23, 2001
Fully integrated thermal inkjet printhead having multiple ink feed holes per nozzle
HEWLETT PACKARD CO53 citations96
US5648804AJul 15, 1997
Compact inkjet substrate with centrally located circuitry and edge feed ink channels
HEWLETT PACKARD CO61 citations96
US5638101AJun 10, 1997
High density nozzle array for inkjet printhead
HEWLETT PACKARD CO69 citations96
US5604519AFeb 18, 1997
Inkjet printhead architecture for high frequency operation
HEWLETT PACKARD CO83 citations96
US5594481AJan 14, 1997
Ink channel structure for inkjet printhead
HEWLETT PACKARD CO96 citations96
US5420627AMay 30, 1995
Inkjet printhead
HEWLETT PACKARD CO65 citations96
US5648805AJul 15, 1997
Inkjet printhead architecture for high speed and high resolution printing
HEWLETT PACKARD CO77 citations95
US5608436AMar 4, 1997
Inkjet printer printhead having equalized shelf length
HEWLETT PACKARD CO73 citations95
US5417897AMay 23, 1995
Method for forming tapered inkjet nozzles
HEWLETT PACKARD CO86 citations95
US5635966AJun 3, 1997
Edge feed ink delivery thermal inkjet printhead structure and method of fabrication
HEWLETT PACKARD CO91 citations94
US5167776ADec 1, 1992
Thermal inkjet printhead orifice plate and method of manufacture
HEWLETT PACKARD CO74 citations94
US6227660B1May 8, 2001
Printhead with pump driven ink circulation
HEWLETT PACKARD CO41 citations93
US6179414B1Jan 30, 2001
Ink delivery system for an inkjet printhead
HEWLETT PACKARD CO34 citations93
US5953029ASep 14, 1999
Ink delivery system for an inkjet printhead
HEWLETT PACKARD CO18 citations93
US6543884B1Apr 8, 2003
Fully integrated thermal inkjet printhead having etched back PSG layer
HEWLETT PACKARD CO37 citations92
US6402972B1Jun 11, 2002
Solid state ink jet print head and method of manufacture
HEWLETT PACKARD CO33 citations92
US6336714B1Jan 8, 2002
Fully integrated thermal inkjet printhead having thin film layer shelf
HEWLETT PACKARD CO31 citations92
US6183076B1Feb 6, 2001
Printer having multi-chamber print cartridges and off-carriage regulator
HEWLETT PACKARD CO46 citations92
US5988786ANov 23, 1999
Articulated stress relief of an orifice membrane
HEWLETT PACKARD CO24 citations92
US5619236AApr 8, 1997
Self-cooling printhead structure for inkjet printer with high density high frequency firing chambers
HEWLETT PACKARD CO23 citations92
US5563642AOct 8, 1996
Inkjet printhead architecture for high speed ink firing chamber refill
HEWLETT PACKARD CO28 citations92
US5300959AApr 5, 1994
Efficient conductor routing for inkjet printhead
HEWLETT PACKARD CO46 citations92
US5378137AJan 3, 1995
Mask design for forming tapered inkjet nozzles
HEWLETT PACKARD CO38 citations91
US4829319AMay 9, 1989
Plastic orifice plate for an ink jet printhead and method of manufacture
HEWLETT PACKARD CO38 citations90
US6557971B1May 6, 2003
Method for servicing an inkjet printhead
HEWLETT PACKARD CO15 citations84
US5625396AApr 29, 1997
Ink delivery method for an inkjet print cartridge
HEWLETT PACKARD CO12 citations74
US6517735B2Feb 11, 2003
Ink feed trench etch technique for a fully integrated thermal inkjet printhead
HEWLETT PACKARD CO9 citations73
HEWLETT PACKARD DEVELOPMENT CO
9 patentsUS7198044B2Apr 3, 2007
Applicator for dispensing bioactive compositions and methods for using the same
HEWLETT PACKARD DEVELOPMENT CO148 citations99
US6684880B2Feb 3, 2004
Applicator for dispensing bioactive compositions and methods for using the same
HEWLETT PACKARD DEVELOPMENT CO131 citations99
US7490924B2Feb 17, 2009
Drop generator for ultra-small droplets
HEWLETT PACKARD DEVELOPMENT CO38 citations92
US6698868B2Mar 2, 2004
Thermal drop generator for ultra-small droplets
HEWLETT PACKARD DEVELOPMENT CO27 citations92
US7243648B2Jul 17, 2007
Thermal drop generator
HEWLETT PACKARD DEVELOPMENT CO10 citations81
US7125731B2Oct 24, 2006
Drop generator for ultra-small droplets
HEWLETT PACKARD DEVELOPMENT CO10 citations74
US6918657B2Jul 19, 2005
Fully integrated thermal inkjet printhead having etched back PSG layer
HEWLETT PACKARD DEVELOPMENT CO10 citations74
US6767474B2Jul 27, 2004
Fluid ejector head having a planar passivation layer
HEWLETT PACKARD DEVELOPMENT CO12 citations73
US6834942B2Dec 28, 2004
Fluid ejector head having a planar passivation layer
HEWLETT PACKARD DEVELOPMENT CO2 citations62
HEWLETT PACKARD CORP
2 patentsGILSON CHARLES W
2 patentsIMTECH INC
1 patentVIDEOJET TECHNOLOGIES INC
1 patentShowing the top 50 of 57 patents by PatentIndex Score.