Inventor · disambiguated record
David Lee Merrifield
Also filed as: MERRIFIELD DAVID L · MERRIFIELD DAVID LEE
35 granted patents·4 pending applications·585 citations·filing 1993–2024
97Inventor score
Top patents by PatentIndex Score
39 records- 0198US10962905B1Seal for an electrophotograhic image forming deviceLEXMARK INT INC·Filed 2020·Granted Mar 30, 2021·8 cites·14 claims
- 0297US6246841B1Removable toner cartridgeLEXMARK INT INC·Filed 2000·Granted Jun 12, 2001·102 cites·37 claims
- 0396US10691062B1Toner cartridge having a spring for mechanically biasing a developer unit relative to a photoconductor unit and forming an electrical path to an imaging componentLEXMARK INT INC·Filed 2019·Granted Jun 23, 2020·12 cites·17 claims
- 0496US9316944B2Toner cartridge having an alignment member for aligning with a developer unit in an electrophotographic image forming deviceLEXMARK INT INC·Filed 2015·Granted Apr 19, 2016·11 cites·9 claims
- 0596US5995774AMethod and apparatus for storing data in a non-volatile memory circuit mounted on a printer's process cartridgeLEXMARK INT INC·Filed 1998·Granted Nov 30, 1999·198 cites·43 claims
- 0695US10656592B1Toner cartridge having positioning featuresLEXMARK INT INC·Filed 2019·Granted May 19, 2020·9 cites·20 claims
- 0795US5331378AToner cartridge with independent driven systemsLEXMARK INT INC·Filed 1993·Granted Jul 19, 1994·65 cites·4 claims
- 0894US12092990B2Toner containers having electrical connectors of different positionsLEXMARK INT INC·Filed 2022·Granted Sep 17, 2024·2 cites·24 claims
- 0994US11829085B1Toner container having an angled electrical connectorLEXMARK INT INC·Filed 2022·Granted Nov 28, 2023·2 cites·12 claims
- 1091US7532843B2Image forming substance engaging deviceLEXMARK INT INC·Filed 2005·Granted May 12, 2009·14 cites·7 claims
- 1191US6980767B1Method and apparatus for adhering sheets of print media together by use of toner in an electrophotographic printerLEXMARK INT INC·Filed 2004·Granted Dec 27, 2005·46 cites·35 claims
- 1290US8948660B2Toner cartridge having engagement features to actuate a developer unit shutterBAKER RONALD WILLARD·Filed 2012·Granted Feb 3, 2015·27 cites·20 claims
- 1387US7389072B2Reducing adhesion of toner to metering devicesLEXMARK INT INC·Filed 2006·Granted Jun 17, 2008·13 cites·19 claims
- 1486US10338518B2Redundant electrical contact between a fastener and a componentLEXMARK INT INC·Filed 2016·Granted Jul 2, 2019·3 cites·25 claims
- 1584US12510843B2Toner container having an angled electrical connectorLEXMARK INT INC·Filed 2024·Granted Dec 30, 2025·0 cites·5 claims
- 1683US8064815B2Wrap spring clutch augerGIBSON NICHOLAS FENLEY·Filed 2010·Granted Nov 22, 2011·4 cites·20 claims
- 1782US5337032AReduced component toner cartridgeLEXMARK INT INC·Filed 1993·Granted Aug 9, 1994·27 cites·9 claims
- 1880US12164244B2Toner container having an angled electrical connectorLEXMARK INT INC·Filed 2023·Granted Dec 10, 2024·0 cites·7 claims
- 1978USD929496SToner cartridgeLEXMARK INT INC·Filed 2020·Granted Aug 31, 2021·7 cites·1 claims
- 2076US11561489B2Seal for an electrophotograhic image forming deviceLEXMARK INT INC·Filed 2022·Granted Jan 24, 2023·0 cites·18 claims
- 2176US8489002B2Method for delaying the start of a gage for tracking the life of a consumable item for an imaging deviceAMANN MARK WILLIAM·Filed 2010·Granted Jul 16, 2013·2 cites·9 claims
- 2274US7267498B2Six-sided printing methodLEXMARK INT INC·Filed 2006·Granted Sep 11, 2007·6 cites·22 claims
- 2372US11703777B2Drive and seal assembly for an electrophotographic image forming deviceLEXMARK INT INC·Filed 2022·Granted Jul 18, 2023·0 cites·4 claims
- 2471US11402770B2Seal for an electrophotographic image forming deviceLEXMARK INT INC·Filed 2021·Granted Aug 2, 2022·0 cites·5 claims
- 2571US8583003B2Tubular skiving seal for a rotary toner metering mechanism and methods for forming the tubular skiving sealLEXMARK INT INC·Filed 2012·Granted Nov 12, 2013·1 cites·9 claims
- 2670US8380102B2Tubular skiving seal for a rotary toner metering mechanismLEXMARK INT INC·Filed 2010·Granted Feb 19, 2013·1 cites·18 claims
- 2769USD934340SToner cartridgeLEXMARK INT INC·Filed 2020·Granted Oct 26, 2021·4 cites·1 claims
- 2869US6009291AControl of photosensitive roller movementLEXMARK INT INC·Filed 1998·Granted Dec 28, 1999·19 cites·7 claims
- 2966US8265493B2Optical sensor arrangement for an imaging apparatusAMANN MARK WILLIAM·Filed 2010·Granted Sep 11, 2012·1 cites·20 claims
- 3065US11327417B2Drive and seal assembly for an electrophotographic image forming deviceLEXMARK INT INC·Filed 2020·Granted May 10, 2022·0 cites·4 claims
- 3162US10809662B2Toner cartridge having positioning featuresLEXMARK INT INC·Filed 2020·Granted Oct 20, 2020·0 cites·14 claims
- 3260US10444661B2Toner cartridge having a biasing assembly for biasing a media feed roll in an electrophotographic image forming deviceLEXMARK INT INC·Filed 2017·Granted Oct 15, 2019·0 cites·11 claims
- 3359US2015168870A1Toner Cartridge Having an Alignment Member for Aligning with a Developer Unit in an Electrophotographic Image Forming DeviceLEXMARK INT INC·Filed 2013·Application pending·0 cites
- 3458US10185247B1Toner cartridge having a media feed roll assemblyLEXMARK INT INC·Filed 2017·Granted Jan 22, 2019·0 cites·12 claims
- 3557US2013108286A1Method for Delaying the Start of a Gage for Tracking the Life of a Consumable Item for an Imaging DeviceLEXMARK INT INC·Filed 2012·Application pending·0 cites
- 3653US7590373B2Toner metering apparatusLEXMARK INT INC·Filed 2007·Granted Sep 15, 2009·1 cites·20 claims
- 3748US2024069465A1Toner containers having electrical connectors in different orientations and toner container receptacles having corresponding electrical connectors with corresponding positionsLEXMARK INT INC·Filed 2022·Application pending·0 cites
- 3841US2019121277A1Replaceable unit having a media feed roll assembly for an electrophotographic image forming deviceLEXMARK INT INC·Filed 2017·Application pending·0 cites
- 3938US7945175B2Toner container structure and method for assessing toner consumption in an image forming apparatusLEXMARK INT INC·Filed 2008·Granted May 17, 2011·0 cites·20 claims
Join the waitlist — get patent alerts
Get an alert when David Lee Merrifield files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →