Inventor · disambiguated record
Steven W. Steinfield
Also filed as: STEINFIELD STEVEN W · STEINFIELD STEVEN WARREN
49 granted patents·3 pending applications·2,056 citations·filing 1992–2011
99Inventor score
Files withHEWLETT PACKARD CO28HEWLETT PACKARD DEVELOPMENT CO19BLAIR DUSTIN W1CARDELLS ANA MARIA1LEE BRIAN CRAIG1
Top patents by PatentIndex Score
52 records- 0199US5278584AInk delivery system for an inkjet printheadHEWLETT PACKARD CO·Filed 1992·Granted Jan 11, 1994·381 cites·12 claims
- 0296US5946012AReliable high performance drop generator for an inkjet printheadHEWLETT PACKARD CO·Filed 1998·Granted Aug 31, 1999·131 cites·44 claims
- 0395US6508552B1Printer having precision ink drying capability and method of assembling the printerHEWLETT PACKARD CO·Filed 2001·Granted Jan 21, 2003·65 cites·48 claims
- 0494US6702894B2Fluid ejection cartridge and system for dispensing a bioactive substanceHEWLETT PACKARD DEVELOPMENT CO·Filed 2001·Granted Mar 9, 2004·48 cites·52 claims
- 0593US6733139B2Projector with narrow-spectrum light source to complement broad-spectrum light sourceHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted May 11, 2004·51 cites·17 claims
- 0693US6332677B1Stable substrate structure for a wide swath nozzle array in a high resolution inkjet printerHEWLETT PACKARD CO·Filed 1999·Granted Dec 25, 2001·75 cites·17 claims
- 0793US5874974AReliable high performance drop generator for an inkjet printheadHEWLETT PACKARD CO·Filed 1996·Granted Feb 23, 1999·91 cites·42 claims
- 0893US5594481AInk channel structure for inkjet printheadHEWLETT PACKARD CO·Filed 1994·Granted Jan 14, 1997·96 cites·19 claims
- 0992US6244696B1Inkjet print cartridge design for decreasing ink shorts by using an elevated substrate support surface to increase adhesive sealing of the printhead from ink penetrationHEWLETT PACKARD CO·Filed 1999·Granted Jun 12, 2001·87 cites·15 claims
- 1091US5635966AEdge feed ink delivery thermal inkjet printhead structure and method of fabricationHEWLETT PACKARD CO·Filed 1994·Granted Jun 3, 1997·91 cites·10 claims
- 1191US5604519AInkjet printhead architecture for high frequency operationHEWLETT PACKARD CO·Filed 1994·Granted Feb 18, 1997·83 cites·22 claims
- 1290US6692100B2Cleaning apparatus and method of assembly therefor for cleaning an inkjet print headHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Feb 17, 2004·54 cites·12 claims
- 1390US5648805AInkjet printhead architecture for high speed and high resolution printingHEWLETT PACKARD CO·Filed 1994·Granted Jul 15, 1997·77 cites·20 claims
- 1490US5648806AStable substrate structure for a wide swath nozzle array in a high resolution inkjet printerHEWLETT PACKARD CO·Filed 1994·Granted Jul 15, 1997·54 cites·18 claims
- 1589US5984464AStable substrate structure for a wide swath nozzle array in a high resolution inkjet printerHEWLETT PACKARD CO·Filed 1997·Granted Nov 16, 1999·55 cites·20 claims
- 1689US5638101AHigh density nozzle array for inkjet printheadHEWLETT PACKARD CO·Filed 1994·Granted Jun 10, 1997·69 cites·16 claims
- 1788US5648804ACompact inkjet substrate with centrally located circuitry and edge feed ink channelsHEWLETT PACKARD CO·Filed 1994·Granted Jul 15, 1997·61 cites·44 claims
- 1888US5420627AInkjet printheadHEWLETT PACKARD CO·Filed 1992·Granted May 30, 1995·65 cites·15 claims
- 1986US6457821B1Filter carrier for protecting a filter from being blocked by air bubbles in an inkjet printheadHEWLETT PACKARD CO·Filed 2001·Granted Oct 1, 2002·29 cites·20 claims
- 2085US6962715B2Method and dosage form for dispensing a bioactive substanceHEWLETT PACKARD DEVELOPMENT CO·Filed 2001·Granted Nov 8, 2005·20 cites·31 claims
- 2182US8002382B2Print head wipingHEWLETT PACKARD DEVELOPMENT CO·Filed 2007·Granted Aug 23, 2011·10 cites·21 claims
- 2282US5450113AInkjet printhead with improved seal arrangementHEWLETT PACKARD CO·Filed 1992·Granted Sep 12, 1995·44 cites·12 claims
- 2380US6932502B2Mixing apparatusHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Aug 23, 2005·22 cites·14 claims
- 2477US6179414B1Ink delivery system for an inkjet printheadHEWLETT PACKARD CO·Filed 1999·Granted Jan 30, 2001·34 cites·17 claims
- 2576US5568171ACompact inkjet substrate with a minimal number of circuit interconnects located at the end thereofHEWLETT PACKARD CO·Filed 1994·Granted Oct 22, 1996·35 cites·39 claims
- 2675US5563642AInkjet printhead architecture for high speed ink firing chamber refillHEWLETT PACKARD CO·Filed 1994·Granted Oct 8, 1996·28 cites·22 claims
- 2773US6834930B2Imaging device including an optical sensorHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Dec 28, 2004·20 cites·32 claims
- 2869US6378984B1Reinforcing features in flex circuit to provide improved performance in a thermal inkjet printheadHEWLETT PACKARD CO·Filed 1998·Granted Apr 30, 2002·31 cites·17 claims
- 2969US5619236ASelf-cooling printhead structure for inkjet printer with high density high frequency firing chambersHEWLETT PACKARD CO·Filed 1996·Granted Apr 8, 1997·23 cites·26 claims
- 3068US6905217B2Projector with narrow-spectrum light source to complement broad-spectrum light sourceHEWLETT PACKARD DEVELOPMENT CO·Filed 2004·Granted Jun 14, 2005·6 cites·43 claims
- 3168US6575550B1Determining performance of a fluid ejection deviceHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Jun 10, 2003·11 cites·22 claims
- 3266US6334661B1System and method for inducing tensioning of a flexible nozzle member of an inkjet printer with an adhesiveHEWLETT PACKARD CO·Filed 1999·Granted Jan 1, 2002·22 cites·25 claims
- 3366US5953029AInk delivery system for an inkjet printheadHEWLETT PACKARD CO·Filed 1997·Granted Sep 14, 1999·18 cites·12 claims
- 3465US6799882B2Mixing apparatus for injecting fluid into a gas streamHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Oct 5, 2004·10 cites·39 claims
- 3563US7275534B2Medicament ejector with ejection port servicingHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Oct 2, 2007·11 cites·6 claims
- 3663US7038867B2Filter for display systemHEWLETT PACKARD DEVELOPMENT CO·Filed 2005·Granted May 2, 2006·1 cites·14 claims
- 3762US2005129746A1Fluid-jet medicament deliveryFiled 2005·Application pending·0 cites
- 3861US5625396AInk delivery method for an inkjet print cartridgeHEWLETT PACKARD CO·Filed 1994·Granted Apr 29, 1997·12 cites·26 claims
- 3961US2004154534A1Fluid ejection cartridge and system for dispensing a bioactive substanceFiled 2004·Application pending·0 cites
- 4060US8454989B2Laminated ingestible dosage form for dispensing multiple bioactive substancesLEE BRIAN CRAIG·Filed 2005·Granted Jun 4, 2013·1 cites·16 claims
- 4158US7437104B2Developer cleaningHEWLETT PACKARD DEVELOPMENT CO·Filed 2005·Granted Oct 14, 2008·1 cites·47 claims
- 4258US7232226B2Color-generating device and display systemHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Jun 19, 2007·2 cites·25 claims
- 4355US2011204085A1Fluid-jet medicament deliveryHEWLETT PACKARD DEVELOPMENT CO·Filed 2011·Application pending·0 cites
- 4453US9041978B2Selecting printing masks optimized for line features and area fill features of image dataCARDELLS ANA MARIA·Filed 2008·Granted May 26, 2015·2 cites·20 claims
- 4553US6920000B2Filter for a display systemHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Jul 19, 2005·3 cites·19 claims
- 4653US6186622B1Low expansion snout insert for inkjet print cartridgeHEWLETT PACKARD CO·Filed 1999·Granted Feb 13, 2001·13 cites·20 claims
- 4747US6921175B2Color-generating device and display systemHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Jul 26, 2005·1 cites·29 claims
- 4845US8602532B2Electrowetting mechanism for fluid-application deviceBLAIR DUSTIN W·Filed 2011·Granted Dec 10, 2013·0 cites·18 claims
- 4944US6467878B1System and method for locally controlling the thickness of a flexible nozzle memberHEWLETT PACKARD CO·Filed 2000·Granted Oct 22, 2002·3 cites·6 claims
- 5036US7229152B2Fluid ejection device with insulating featureHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Jun 12, 2007·1 cites·36 claims
Showing the top 50 of 52 patent records by PatentIndex Score.
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