Inventor · disambiguated record
John Peter Duffield
Also filed as: DUFFIELD JOHN · DUFFIELD JOHN P · DUFFIELD JOHN PETER
19 granted patents·2 pending applications·67 citations·filing 2002–2024
92Inventor score
Top patents by PatentIndex Score
21 records- 0197US11173724B1Woodgrain suppression in inkjet printingELECTRONICS FOR IMAGING INC·Filed 2020·Granted Nov 16, 2021·3 cites·20 claims
- 0287US10195874B2Inert UV inkjet printing having dual curing modes for ultraviolet-curable inkELECTRONICS FOR IMAGING INC·Filed 2017·Granted Feb 5, 2019·2 cites·20 claims
- 0385US12320681B2Linear rotary encoderELECTRONICS FOR IMAGING INC·Filed 2024·Granted Jun 3, 2025·0 cites·17 claims
- 0483US8684511B2Ink jet UV pinning for control of glossLAHUT JOSEPH A·Filed 2011·Granted Apr 1, 2014·5 cites·24 claims
- 0582US9718269B2Multi-waveform inkjet nozzle correctionELECTRONICS FOR IMAGING INC·Filed 2015·Granted Aug 1, 2017·2 cites·15 claims
- 0682US6905189B1Wet capping tray for ink jet printheadsVUTEK INC·Filed 2003·Granted Jun 14, 2005·25 cites·23 claims
- 0780US10000075B2Multilayer imaging with a high-gloss clear ink layerELECTRONICS FOR IMAGING INC·Filed 2016·Granted Jun 19, 2018·2 cites·20 claims
- 0878US12000717B2Linear rotary encoderELECTRONICS FOR IMAGING INC·Filed 2022·Granted Jun 4, 2024·0 cites·11 claims
- 0976US11667133B2Woodgrain suppression in inkjet printingELECTRONICS FOR IMAGING INC·Filed 2021·Granted Jun 6, 2023·0 cites·18 claims
- 1073US6786578B1Multi-color, multi-speed printing apparatusVUTEK INC·Filed 2002·Granted Sep 7, 2004·18 cites·24 claims
- 1169US11525707B2Linear rotary encoderELECTRONICS FOR IMAGING INC·Filed 2020·Granted Dec 13, 2022·0 cites·18 claims
- 1268US9079427B2Staggered ultra-violet curing systems, structures and processes for inkjet printingDUFFIELD JOHN PETER·Filed 2012·Granted Jul 14, 2015·2 cites·15 claims
- 1368US7396119B2Apparatus and methods for water-based ink printingELECTRONICS FOR IMAGING INC·Filed 2006·Granted Jul 8, 2008·2 cites·11 claims
- 1467US8459778B2Reduced gloss banding through low ink volume deposition per print passLAHUT JOSEPH A·Filed 2011·Granted Jun 11, 2013·1 cites·19 claims
- 1561US10752022B2Multilayer imaging with a high-gloss clear ink layerELECTRONICS FOR IMAGING INC·Filed 2018·Granted Aug 25, 2020·0 cites·20 claims
- 1659US8616691B2Gas removal from a fluid delivery systemDUFFIELD JOHN·Filed 2011·Granted Dec 31, 2013·1 cites·29 claims
- 1757US8672451B2Reduced gloss banding through low ink volume deposition per print passELECTRONICS FOR IMAGING INC·Filed 2013·Granted Mar 18, 2014·0 cites·20 claims
- 1854US8807727B2Gas removal from a fluid delivery systemELECTRONICS FOR IMAGING INC·Filed 2013·Granted Aug 19, 2014·0 cites·12 claims
- 1953US7090327B1Water-based ink jet printerELECTRONICS FOR IMAGING INC·Filed 2003·Granted Aug 15, 2006·4 cites·12 claims
- 2050US2010259589A1Inert uv inkjet printingBARRY JONATHAN·Filed 2009·Application pending·0 cites
- 2149US2008316236A1Apparatus and methods for water-based ink printingDUFFIELD JOHN P·Filed 2008·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →