Inventor
TAPPON ELLEN R
US15 patents
⚠️ This page may combine multiple inventors who share the name “TAPPON ELLEN R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEWLETT PACKARD CO
13 patentsUS5387314AFeb 7, 1995
Fabrication of ink fill slots in thermal ink-jet printheads utilizing chemical micromachining
HEWLETT PACKARD CO287 citations98
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
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
US5350616ASep 27, 1994
Composite orifice plate for ink jet printer and method for the manufacture thereof
HEWLETT PACKARD CO76 citations95
US5066357ANov 19, 1991
Method for making flexible circuit card with laser-contoured vias and machined capacitors
HEWLETT PACKARD CO118 citations93
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
US5378137AJan 3, 1995
Mask design for forming tapered inkjet nozzles
HEWLETT PACKARD CO38 citations91
US5213876AMay 25, 1993
Flexible circuit card with laser-contoured VIAs and machined capacitors
HEWLETT PACKARD CO13 citations71