Inventor · disambiguated record
Palitha Wickramanayake
Also filed as: WICKRAMANAYAKE PALITHA
31 granted patents·9 pending applications·720 citations·filing 1990–2024
97Inventor score
Files withHEWLETT PACKARD DEVELOPMENT CO15HEWLETT PACKARD CO8ABBOTT JAMES E3CROWN ELECTROKINETICS CORP2VASUDEVAN SUNDAR2
Top patents by PatentIndex Score
40 records- 0198US7226647B2Permanent fixation of dyes to surface-modified inorganic particulate-coated mediaHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Jun 5, 2007·167 cites·8 claims
- 0297US5226957ASolubilization of water-insoluble dyes via microemulsions for bleedless, non-threading, high print quality inks for thermal ink-jet printersHEWLETT PACKARD CO·Filed 1992·Granted Jul 13, 1993·138 cites·30 claims
- 0391US11454855B2Applications of an electrokinetic device for an imaging systemCROWN ELECTROKINETICS CORP·Filed 2020·Granted Sep 27, 2022·6 cites·6 claims
- 0491US9187665B2Inkjet ink with self-dispersed pigmentVASUDEVAN SUNDAR·Filed 2010·Granted Nov 17, 2015·7 cites·14 claims
- 0590US9193884B2Ink compositionVASUDEVAN SUNDAR·Filed 2011·Granted Nov 24, 2015·6 cites·15 claims
- 0690US5531816ABleed-alleviated, waterfast, pigment-based ink-jet ink compositionsHEWLETT PACKARD CO·Filed 1995·Granted Jul 2, 1996·64 cites·22 claims
- 0789US5062893AInk formulations by mixing anionic waterfast dyes containing two or more carboxyl groupsHEWLETT PACKARD CO·Filed 1990·Granted Nov 5, 1991·65 cites·24 claims
- 0888US11174328B2Refractive index matched resin for electrophoretic displays and other applicationsCROWN ELECTROKINETICS CORP·Filed 2019·Granted Nov 16, 2021·3 cites·9 claims
- 0983US6036759ABlack to color bleed control in ink-jet printing inksHEWLETT PACKARD CO·Filed 1998·Granted Mar 14, 2000·43 cites·24 claims
- 1081US6300391B2Inks containing glycol ethers and specific polymers for dry time and bleed improvements in ink-jet printing inksHEWLETT PACKARD CO·Filed 1999·Granted Oct 9, 2001·43 cites·17 claims
- 1181US5565022AFast drying, bleed-free ink-jet ink compositionsHEWLETT PACKARD CO·Filed 1995·Granted Oct 15, 1996·41 cites·20 claims
- 1281US5342440ABlack-to-color bleed control in thermal ink-jet printingHEWLETT PACKARD CORP·Filed 1992·Granted Aug 30, 1994·40 cites·15 claims
- 1380US7677720B2Chemically-modified coatings for enhanced performance of ink-jet imagesHEWLETT PACKARD DEVELOPMENT CO·Filed 2005·Granted Mar 16, 2010·3 cites·16 claims
- 1479US11578150B2Refractive index matched resin for electrophoretic displays and other applicationsABBOTT JR JAMES E·Filed 2021·Granted Feb 14, 2023·0 cites·20 claims
- 1579US6905729B2Active ligand-modified inorganic porous coatings for ink-jet mediaHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Jun 14, 2005·10 cites·9 claims
- 1678US5713989ABleed alleviated aqueous pigment dispersion-based ink-jet ink compositionsHEWLETT PACKARD CO·Filed 1996·Granted Feb 3, 1998·37 cites·23 claims
- 1776US12044946B2Applications of an electrokinetic device for an imaging systemABBOTT JAMES E·Filed 2023·Granted Jul 23, 2024·0 cites·18 claims
- 1872US11693289B2Applications of an electrokinetic device for an imaging systemABBOTT JAMES E·Filed 2022·Granted Jul 4, 2023·0 cites·1 claims
- 1972US7638166B2Method of preparing active ligand-modified inorganic porous coatings on ink-jet mediaHEWLETT PACKARD DEVELOPMENT CO·Filed 2005·Granted Dec 29, 2009·1 cites·13 claims
- 2070US2025053059A1Applications of an electrokinetic device for an imaging systemABBOTT JAMES E·Filed 2024·Application pending·0 cites
- 2169US6805736B2Pen-compatible black and color inkjet inks having improved bleed controlHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Oct 19, 2004·8 cites·19 claims
- 2268US6019827AReliability enhancement of microemulsion-based ink-jet inksHEWLETT PACKARD CO·Filed 1997·Granted Feb 1, 2000·26 cites·28 claims
- 2365US7449217B2Chemically-bonded porous coatings that enhance humid fastness and fade fastness performance of ink jet imagesHEWLETT PACKARD DEVELOPMENT CO·Filed 2004·Granted Nov 11, 2008·8 cites·1 claims
- 2465US6951672B2Chemically-modified coatings for enhanced performance of ink-jet imagesHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Oct 4, 2005·3 cites·5 claims
- 2563US10583660B2Printhead device including shipping fluidHEWLETT PACKARD DEVELOPMENT CO·Filed 2019·Granted Mar 10, 2020·0 cites·15 claims
- 2663US7699461B2Permanent fixation of dyes to surface-modified inorganic particulate-coated mediaHEWLETT PACKARD DEVELOPMENT CO·Filed 2007·Granted Apr 20, 2010·0 cites·8 claims
- 2757US8052786B2Amphoteric pigment dispersion containing ink formulations, methods of using ink formulations, and systems using ink formulationsHEWLETT PACKARD DEVELOPMENT CO·Filed 2010·Granted Nov 8, 2011·0 cites·11 claims
- 2856US10195861B2Printhead device including shipping fluidHEWLETT PACKARD DEVELOPMENT CO·Filed 2014·Granted Feb 5, 2019·0 cites·20 claims
- 2956US7919176B2Ink-jet media porous coatings with chemically attached active ligandsHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Apr 5, 2011·1 cites·17 claims
- 3056US2009087594A1Additives for use in print media to reduce bronzingWICKRAMANAYAKE PALITHA·Filed 2008·Application pending·0 cites
- 3152US7740920B2Chemically-bonded porous coatings that enhance humid fastness and fade fastness performance of ink jet imagesHEWLETT PACKARD DEVELOPMENT LP·Filed 2008·Granted Jun 22, 2010·0 cites·1 claims
- 3250US7666256B2Amphoteric pigment dispersion containing ink formulations, methods of using ink formulations, and systems using ink formulationsHEWLETT PACKARD DEVELOPMENT CO·Filed 2004·Granted Feb 23, 2010·0 cites·10 claims
- 3347US2004209015A1Additives for use in print media to reduce bronzingFiled 2003·Application pending·0 cites
- 3444US8287633B2Restoration of black to color bleed performance of amphoteric pigment dispersion based inks of low pigment loadsWICKRAMANAYAKE PALITHA·Filed 2005·Granted Oct 16, 2012·0 cites·21 claims
- 3544US2009031922A1Ink composition and method for forming the sameRENGASWAMY SUKANYA·Filed 2007·Application pending·0 cites
- 3643US2018194958A1Ink compositionsHEWLETT PACKARD DEVELOPMENT CO·Filed 2015·Application pending·0 cites
- 3743US2018298213A1Ink compositionsHEWLETT PACKARD DEVELOPMENT CO·Filed 2016·Application pending·0 cites
- 3842US2004209017A1Weak base modification of porous ink-jet media coating for enhanced image qualityFiled 2004·Application pending·0 cites
- 3941US2005227096A1Emulsion with discontinouous phase including particle solHARDING PHIL·Filed 2004·Application pending·0 cites
- 4040US2003175451A1Chemically-bonded porous coatings that enhance humid fastness and fade fastness performance of ink jet imagesFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →