Inventor
WICKRAMANAYAKE PALITHA
US32 patents
⚠️ This page may combine multiple inventors who share the name “WICKRAMANAYAKE PALITHA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEWLETT PACKARD DEVELOPMENT CO
13 patentsUS7226647B2Jun 5, 2007
Permanent fixation of dyes to surface-modified inorganic particulate-coated media
HEWLETT PACKARD DEVELOPMENT CO167 citations98
US7449217B2Nov 11, 2008
Chemically-bonded porous coatings that enhance humid fastness and fade fastness performance of ink jet images
HEWLETT PACKARD DEVELOPMENT CO8 citations74
US6905729B2Jun 14, 2005
Active ligand-modified inorganic porous coatings for ink-jet media
HEWLETT PACKARD DEVELOPMENT CO10 citations74
US6805736B2Oct 19, 2004
Pen-compatible black and color inkjet inks having improved bleed control
HEWLETT PACKARD DEVELOPMENT CO8 citations74
US7677720B2Mar 16, 2010
Chemically-modified coatings for enhanced performance of ink-jet images
HEWLETT PACKARD DEVELOPMENT CO3 citations62
US6951672B2Oct 4, 2005
Chemically-modified coatings for enhanced performance of ink-jet images
HEWLETT PACKARD DEVELOPMENT CO3 citations62
US8052786B2Nov 8, 2011
Amphoteric pigment dispersion containing ink formulations, methods of using ink formulations, and systems using ink formulations
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US7919176B2Apr 5, 2011
Ink-jet media porous coatings with chemically attached active ligands
HEWLETT PACKARD DEVELOPMENT CO1 citations52
US7699461B2Apr 20, 2010
Permanent fixation of dyes to surface-modified inorganic particulate-coated media
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US7666256B2Feb 23, 2010
Amphoteric pigment dispersion containing ink formulations, methods of using ink formulations, and systems using ink formulations
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US7638166B2Dec 29, 2009
Method of preparing active ligand-modified inorganic porous coatings on ink-jet media
HEWLETT PACKARD DEVELOPMENT CO1 citations52
US10583660B2Mar 10, 2020
Printhead device including shipping fluid
HEWLETT PACKARD DEVELOPMENT CO0 citations44
US10195861B2Feb 5, 2019
Printhead device including shipping fluid
HEWLETT PACKARD DEVELOPMENT CO0 citations44
HEWLETT PACKARD CO
8 patentsUS5226957AJul 13, 1993
Solubilization of water-insoluble dyes via microemulsions for bleedless, non-threading, high print quality inks for thermal ink-jet printers
HEWLETT PACKARD CO138 citations98
US5531816AJul 2, 1996
Bleed-alleviated, waterfast, pigment-based ink-jet ink compositions
HEWLETT PACKARD CO64 citations96
US5062893ANov 5, 1991
Ink formulations by mixing anionic waterfast dyes containing two or more carboxyl groups
HEWLETT PACKARD CO65 citations95
US6300391B2Oct 9, 2001
Inks containing glycol ethers and specific polymers for dry time and bleed improvements in ink-jet printing inks
HEWLETT PACKARD CO43 citations92
US6036759AMar 14, 2000
Black to color bleed control in ink-jet printing inks
HEWLETT PACKARD CO43 citations92
US6019827AFeb 1, 2000
Reliability enhancement of microemulsion-based ink-jet inks
HEWLETT PACKARD CO26 citations92
US5713989AFeb 3, 1998
Bleed alleviated aqueous pigment dispersion-based ink-jet ink compositions
HEWLETT PACKARD CO37 citations92
US5565022AOct 15, 1996
Fast drying, bleed-free ink-jet ink compositions
HEWLETT PACKARD CO41 citations92