Inventor · disambiguated record
Ronald A. Askeland
Also filed as: ASKELAND RONALD · ASKELAND RONALD A · ASKELAND RONALD ALBERT
80 granted patents·11 pending applications·2,089 citations·filing 1987–2020
99Inventor score
Files withHEWLETT PACKARD DEVELOPMENT CO38HEWLETT PACKARD CO35ASKELAND RONALD A2DU PONT2HP SCITEX LTD2
Top patents by PatentIndex Score
91 records- 0197US6367903B1Alignment of ink dots in an inkjet printerHEWLETT PACKARD CO·Filed 1998·Granted Apr 9, 2002·221 cites·4 claims
- 0297US6247787B1Print mode for improved leading and trailing edges and text print qualityHEWLETT PACKARD CO·Filed 2000·Granted Jun 19, 2001·88 cites·20 claims
- 0397US6126268AMulti-chamber ink supplyHEWLETT PACKARD CO·Filed 1998·Granted Oct 3, 2000·157 cites·20 claims
- 0497US5356464AAqueous ink compositions containing anti-curl agentsDU PONT·Filed 1993·Granted Oct 18, 1994·195 cites·11 claims
- 0596US7582188B2Composition and ink receiving system incorporating the compositionHEWLETT PACKARD DEVELOPMENT CO·Filed 2005·Granted Sep 1, 2009·42 cites·14 claims
- 0696US6290331B1High efficiency orifice plate structure and printhead using the sameHEWLETT PACKARD CO·Filed 2000·Granted Sep 18, 2001·96 cites·19 claims
- 0795US7607752B2Misfiring print nozzle compensationHEWLETT PACKARD DEVELOPMENT CO·Filed 2006·Granted Oct 27, 2009·28 cites·20 claims
- 0895US7249815B2Nozzle distributionHEWLETT PACKARD DEVELOPMENT CO·Filed 2004·Granted Jul 31, 2007·64 cites·36 claims
- 0995US6508552B1Printer having precision ink drying capability and method of assembling the printerHEWLETT PACKARD CO·Filed 2001·Granted Jan 21, 2003·65 cites·48 claims
- 1095US6443568B1Printing strategy for improved image quality and durabilityHEWLETT PACKARD CO·Filed 2001·Granted Sep 3, 2002·76 cites·31 claims
- 1192US8123907B2Composition and ink receiving system incorporating the compositionSTOFFEL JOHN L·Filed 2009·Granted Feb 28, 2012·32 cites·17 claims
- 1292US6612673B1System and method for predicting dynamic thermal conditions of an inkjet printing systemHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Sep 2, 2003·47 cites·25 claims
- 1389US8758886B2Recording sheet with improved image dry timeKOENIG MICHAEL F·Filed 2005·Granted Jun 24, 2014·21 cites·16 claims
- 1488US6302507B1Method for controlling the over-energy applied to an inkjet print cartridge using dynamic pulse width adjustment based on printhead temperatureHEWLETT PACKARD CO·Filed 1999·Granted Oct 16, 2001·61 cites·22 claims
- 1587US7796145B2Hybrid electro-photographic/ink-jet press print systems and primersHEWLETT PACKARD DEVELOPMENT CO·Filed 2007·Granted Sep 14, 2010·9 cites·79 claims
- 1687US7246896B2Ink-jet printing methods and systems providing improved image durabilityHEWLETT PACKARD DEVELOPMENT CO·Filed 2004·Granted Jul 24, 2007·19 cites·39 claims
- 1787US6547354B1Printing system that utilizes print masks with resolutions that are non-integral multiples of each otherHEWLETT PACKARD CO·Filed 2000·Granted Apr 15, 2003·37 cites·28 claims
- 1887US5600351AInkjet printer with increased print resolution in the carriage scan axisHEWLETT PACKARD CO·Filed 1994·Granted Feb 4, 1997·50 cites·20 claims
- 1987US5528269AServicing a newly-installed ink pen to eliminate uneven print quality without excessive wasting of inkHEWLETT PACKARD CO·Filed 1994·Granted Jun 18, 1996·61 cites·14 claims
- 2087US4761180ADyes containing tetramethylammonium cation for ink-jet printing inksHEWLETT PACKARD CO·Filed 1987·Granted Aug 2, 1988·45 cites·30 claims
- 2186US8231198B1Method for print head service during continuous printingASKELAND RONALD A·Filed 2012·Granted Jul 31, 2012·4 cites·14 claims
- 2284US6193347B1Hybrid multi-drop/multi-pass printing systemHEWLETT PACKARD CO·Filed 1998·Granted Feb 27, 2001·53 cites·28 claims
- 2384US5541625AMethod for increased print resolution in the carriage scan axis of an inkjet printerHEWLETT PACKARD CO·Filed 1994·Granted Jul 30, 1996·43 cites·17 claims
- 2483US6502915B1Apparatus for generating high frequency ink ejection and ink chamber refillHEWLETT PACKARD CO·Filed 2000·Granted Jan 7, 2003·21 cites·18 claims
- 2582US6278469B1Customizing printmasks for printhead nozzle aberrationsHEWLETT PACKARD CO·Filed 1999·Granted Aug 21, 2001·46 cites·42 claims
- 2678US9358778B2Inkjet imaging methods, imaging methods and hard imaging devicesHEWLETT PACKARD DEVELOPMENT CO·Filed 2014·Granted Jun 7, 2016·2 cites·21 claims
- 2778US8628190B2Inkjet imaging methods, imaging methods and hard imaging devicesGILA OMER·Filed 2008·Granted Jan 14, 2014·5 cites·26 claims
- 2878US4994110ADyes containing lithium for ink-jet printing inksHEWLETT PACKARD CO·Filed 1989·Granted Feb 19, 1991·29 cites·20 claims
- 2977US6604812B2Print direction dependent firing frequency for improved edge qualityHEWLETT PACKARD DEVELOPMENT CO·Filed 2001·Granted Aug 12, 2003·17 cites·20 claims
- 3077US6193345B1Apparatus for generating high frequency ink ejection and ink chamber refillHEWLETT PACKARD CO·Filed 1997·Granted Feb 27, 2001·32 cites·3 claims
- 3177US5923344AFractional dot column correction for scan axis alignment during printingHEWLETT PACKARD CO·Filed 1997·Granted Jul 13, 1999·38 cites·24 claims
- 3276US6464316B1Bi-directional printmode for improved edge qualityHEWLETT PACKARD CO·Filed 2001·Granted Oct 15, 2002·14 cites·20 claims
- 3376US5976230AReactive ink set for ink-jet printingHEWLETT PACKARD CO·Filed 1998·Granted Nov 2, 1999·31 cites·27 claims
- 3475US6310640B1Banding reduction in multipass printmodesHEWLETT PACKARD CO·Filed 1999·Granted Oct 30, 2001·32 cites·21 claims
- 3575US6254217B1Apparatus and method for hue shift compensation in a bidirectional printerHEWLETT PACKARD CO·Filed 1999·Granted Jul 3, 2001·53 cites·45 claims
- 3674US10205849B2To process information to use at least one opaque ink as a process colorantHEWLETT PACKARD DEVELOPMENT CO·Filed 2014·Granted Feb 12, 2019·2 cites·13 claims
- 3774US6302505B1Printing system that utilizes continuous and non-continuous firing frequenciesHEWLETT PACKARD CO·Filed 2000·Granted Oct 16, 2001·15 cites·36 claims
- 3873US8172359B2System and method for print head maintenance during continuous printingASKELAND RONALD A·Filed 2007·Granted May 8, 2012·3 cites·14 claims
- 3973US5745140AColor ink-jet printer with pigment black and dye-based color inksHEWLETT PACKARD CO·Filed 1996·Granted Apr 28, 1998·32 cites·15 claims
- 4071US6270185B1Very-high-ratio mixed resolution and biphod pens for low-cost fast bidirectional one-pass incremental printingHEWLETT PACKARD CO·Filed 1999·Granted Aug 7, 2001·26 cites·25 claims
- 4170US6832823B1Disabling ink ejection elements to decrease dot placement artifacts in an inkjet printheadHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Dec 21, 2004·13 cites·32 claims
- 4269US11390094B2Radiation sources for colorantsHP SCITEX LTD·Filed 2020·Granted Jul 19, 2022·0 cites·20 claims
- 4368US6698858B1System and method for decreasing print banding with time delay synchronization of ejected inkHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Mar 2, 2004·11 cites·30 claims
- 4468US2022081580A1Dye sublimation inkjet inkHEWLETT PACKARD DEVELOPMENT CO·Filed 2019·Application pending·0 cites
- 4566US10838182B2Radiation sources for colorantsHP SCITEX LTD·Filed 2020·Granted Nov 17, 2020·0 cites·15 claims
- 4665US11938727B2Continuous fluid recirculation and recirculation on-demand prior to firing for thermal ejection of fluid having concentration of solidsHEWLETT PACKARD DEVELOPMENT CO·Filed 2020·Granted Mar 26, 2024·0 cites·15 claims
- 4764US10513122B2Methods and apparatus to reduce ink evaporation in printhead nozzlesHEWLETT PACKARD DEVELOPMENT CO·Filed 2018·Granted Dec 24, 2019·0 cites·20 claims
- 4863US11807019B2Printing fluid circulationHEWLETT PACKARD DEVELOPMENT CO·Filed 2019·Granted Nov 7, 2023·0 cites·16 claims
- 4963US10377095B2Printed facetsHP INDIGO BV·Filed 2015·Granted Aug 13, 2019·1 cites·20 claims
- 5062US11279841B2Fluid setsHEWLETT PACKARD DEVELOPMENT CO·Filed 2018·Granted Mar 22, 2022·0 cites·16 claims
Showing the top 50 of 91 patent records by PatentIndex Score.
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