Inventor · disambiguated record
Jeffrey D Langford
Also filed as: LANGFORD JEFFREY D
20 granted patents·300 citations·filing 1994–2020
95Inventor score
Top patents by PatentIndex Score
20 records- 0192US7296881B2Printhead de-primingHEWLETT PACKARD DEVELOPMENT CO·Filed 2005·Granted Nov 20, 2007·17 cites·21 claims
- 0291US7556367B2Ink delivery system and a method for replacing inkHEWLETT PACKARD DEVELOPMENT CO·Filed 2007·Granted Jul 7, 2009·12 cites·20 claims
- 0389US7416293B2Ink recirculation systemHEWLETT PACKARD DEVELOPMENT CO·Filed 2005·Granted Aug 26, 2008·9 cites·11 claims
- 0486US7628475B2Printhead evacuation mechanism and methodHEWLETT PACKARD DEVELOPMENT CO·Filed 2007·Granted Dec 8, 2009·8 cites·17 claims
- 0585US7510274B2Ink delivery system and methods for improved printingHEWLETT PACKARD DEVELOPMENT CO·Filed 2005·Granted Mar 31, 2009·7 cites·12 claims
- 0684US7543908B2Clearing silicate kogationHEWLETT PACKARD DEVELOPMENT CO·Filed 2005·Granted Jun 9, 2009·10 cites·26 claims
- 0780US7331664B2Ink delivery system and a method for replacing inkHEWLETT PACKARD DEVELOPMENT CO·Filed 2004·Granted Feb 19, 2008·18 cites·16 claims
- 0878US8002395B2Ink recirculation systemHEWLETT PACKARD DEVELOPMENT CO·Filed 2008·Granted Aug 23, 2011·4 cites·16 claims
- 0977US5698406ADisposable device in diagnostic assaysBIOCIRCUITS CORP·Filed 1995·Granted Dec 16, 1997·40 cites·12 claims
- 1076US5503985ADisposable device for diagnostic assaysFiled 1994·Granted Apr 2, 1996·73 cites·22 claims
- 1174USD424103SInkjet printheadHEWLETT PACKARD CO·Filed 1999·Granted May 2, 2000·18 cites·1 claims
- 1271US6273560B1Print cartridge coupling and reservoir assembly for use in an inkjet printing system with an off-axis ink supplyHEWLETT PACKARD CO·Filed 1996·Granted Aug 14, 2001·30 cites·28 claims
- 1371US6145967AMethod and apparatus for configuring a fluid interconnect for an ink-jet printheadHEWLETT PACKARD CO·Filed 1997·Granted Nov 14, 2000·29 cites·10 claims
- 1468US7997698B2Ink delivery system and methods for improved printingHEWLETT PACKARD DEVELOPMENT CO·Filed 2008·Granted Aug 16, 2011·2 cites·20 claims
- 1563US12246540B2Profile governing servicing maintenance of fluidic printhead nozzlesHEWLETT PACKARD DEVELOPMENT CO·Filed 2020·Granted Mar 11, 2025·0 cites·15 claims
- 1663US8282203B2Printing mechanism and method of ink formulationBRENNER JAMES M·Filed 2011·Granted Oct 9, 2012·1 cites·17 claims
- 1756US6364458B2Pivoted printhead handle with recessed rest positionHEWLETT PACKARD CO·Filed 1999·Granted Apr 2, 2002·20 cites·2 claims
- 1844US7922314B2Printing mechanism and method of ink formulationHEWLETT PACKARD DEVELOPMENT CO·Filed 2004·Granted Apr 12, 2011·2 cites·7 claims
- 1936US7237879B2Method and apparatus for reducing nozzle failure in stored inkjet printheadsHEWLETT PACKARD DEVELOPMENT CO·Filed 2004·Granted Jul 3, 2007·0 cites·20 claims
- 2031US6655794B2Methods and apparatus for curing a thermal sealing material using a heater traceHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Dec 2, 2003·0 cites·23 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →