Inventor · disambiguated record
Paul Douglas Horrall
Also filed as: HORRALL PAUL · HORRALL PAUL D · HORRALL PAUL DOUGLAS
46 granted patents·5 pending applications·908 citations·filing 1989–2016
98Inventor score
Top patents by PatentIndex Score
51 records- 0196US7831168B2Imaging units and methods of insertion into an image forming deviceLEXMARK INT INC·Filed 2007·Granted Nov 9, 2010·31 cites·6 claims
- 0295US9285758B1Positional control features between replaceable units of an electrophotographic image forming deviceLEXMARK INT INC·Filed 2014·Granted Mar 15, 2016·13 cites·21 claims
- 0395US6253046B1Multi-functional fuser backup roll release mechanismLEXMARK INT INC·Filed 2000·Granted Jun 26, 2001·74 cites·27 claims
- 0495US5331378AToner cartridge with independent driven systemsLEXMARK INT INC·Filed 1993·Granted Jul 19, 1994·65 cites·4 claims
- 0594US9291992B1Positional control features for an imaging unit in an electrophotographic image forming deviceLEXMARK INT INC·Filed 2014·Granted Mar 22, 2016·11 cites·17 claims
- 0694US7321739B1Cartridge with a handle for use with an image forming deviceLEXMARK INT INC·Filed 2007·Granted Jan 22, 2008·54 cites·10 claims
- 0794US5758233AToner cartridge with locating on photoconductor shaftLEXMARK INT INC·Filed 1996·Granted May 26, 1998·71 cites·4 claims
- 0892US5802432AToner cartridge with housing and pin constructionLEXMARK INT INC·Filed 1996·Granted Sep 1, 1998·65 cites·10 claims
- 0990US6301456B1Method and apparatus for inserting a cartridge into an image forming apparatusLEXMARK INT INC·Filed 2000·Granted Oct 9, 2001·35 cites·38 claims
- 1090US5365315AImaging device with cartridge and lid interactionLEXMARK INT INC·Filed 1993·Granted Nov 15, 1994·43 cites·7 claims
- 1189US9341991B1Deskewing mechanism for an intermediate transfer belt module and imaging drums in an electrophotographic printerLEXMARK INT INC·Filed 2015·Granted May 17, 2016·6 cites·15 claims
- 1289US5768661AToner cartridge with external planar installation guidesLEXMARK INT INC·Filed 1996·Granted Jun 16, 1998·51 cites·6 claims
- 1387US7675536B2Architectures for multi-functional image forming devicesLEXMARK INT INC·Filed 2006·Granted Mar 9, 2010·11 cites·22 claims
- 1487US6681094B2Intermediate transfer member belt/roller configuration for single-pass color electrophotographic printerLEXMARK INT INC·Filed 2001·Granted Jan 20, 2004·30 cites·49 claims
- 1587US5786571AWrapped temperature sensing assemblyLEXMARK INT INC·Filed 1997·Granted Jul 28, 1998·92 cites·5 claims
- 1685US7639965B2Architecture for an image-forming deviceLEXMARK INT INC·Filed 2006·Granted Dec 29, 2009·7 cites·21 claims
- 1784US9851654B2Automated lens cleaning and shutter system for an electrophotographic imaging deviceLEXMARK INT INC·Filed 2016·Granted Dec 26, 2017·5 cites·19 claims
- 1883US9671750B2Positional control features for an imaging unit in an electrophotographic image forming deviceLEXMARK INT INC·Filed 2016·Granted Jun 6, 2017·2 cites·25 claims
- 1982US7594647B2Pick mechanism with stack height dependent force for use in an image forming deviceLEXMARK INT INC·Filed 2005·Granted Sep 29, 2009·8 cites·10 claims
- 2082US5337032AReduced component toner cartridgeLEXMARK INT INC·Filed 1993·Granted Aug 9, 1994·27 cites·9 claims
- 2180US4994861APrinting machine with charge neutralizing systemIBM·Filed 1989·Granted Feb 19, 1991·39 cites·6 claims
- 2277US6466763B1Conveyor and waste toner reservoir for an image-forming apparatusLEXMARK INT INC·Filed 2000·Granted Oct 15, 2002·16 cites·9 claims
- 2376US6697589B1Fuser latch systemLEXMARK INT INC·Filed 2001·Granted Feb 24, 2004·16 cites·30 claims
- 2476US6281918B1Laser printhead mounting apparatus and printhead skew adjustment mechanism for an electrophotographic machineLEXMARK INT INC·Filed 2000·Granted Aug 28, 2001·16 cites·37 claims
- 2573US7890018B2Architecture for an image-forming deviceLEXMARK INT INC·Filed 2009·Granted Feb 15, 2011·3 cites·13 claims
- 2671US6692107B2Ink cartridge body and carrier assemblyLEXMARK INT INC·Filed 2001·Granted Feb 17, 2004·15 cites·22 claims
- 2771US6580888B2Contact development system reference structureLEXMARK INT INC·Filed 2001·Granted Jun 17, 2003·12 cites·20 claims
- 2870US6429891B1Printhead mounting apparatus providing adjustment to effect printhead skew correctionLEXMARK INT INC·Filed 2000·Granted Aug 6, 2002·13 cites·29 claims
- 2969US6009291AControl of photosensitive roller movementLEXMARK INT INC·Filed 1998·Granted Dec 28, 1999·19 cites·7 claims
- 3065US7853178B2Methods and devices for selectively driving developer members within an image forming deviceLEXMARK INT INC·Filed 2007·Granted Dec 14, 2010·2 cites·20 claims
- 3165US7222848B2Method and device to control the alignment of a media sheet in an image forming deviceLEXMARK INT INC·Filed 2004·Granted May 29, 2007·8 cites·19 claims
- 3263US7397493B2Laser printhead having a mechanical skew correction mechanismLEXMARK INT INC·Filed 2005·Granted Jul 8, 2008·2 cites·18 claims
- 3359US5752135ADoor operated charge member positioningLEXMARK INT INC·Filed 1997·Granted May 12, 1998·14 cites·2 claims
- 3458US7043189B2Methods and devices for moving waste toner within an image forming deviceLEXMARK INT INC·Filed 2004·Granted May 9, 2006·7 cites·35 claims
- 3557US9471027B2Positional control features between replaceable units of an electrophotographic image forming deviceLEXMARK INT INC·Filed 2016·Granted Oct 18, 2016·0 cites·21 claims
- 3656US8233834B2Rake mechanism for distributing waste toner in a printerHORRALL PAUL DOUGLAS·Filed 2008·Granted Jul 31, 2012·3 cites·22 claims
- 3756US7729649B2Methods and devices for reducing wear on a print cartridgeLEXMARK INT INC·Filed 2006·Granted Jun 1, 2010·1 cites·23 claims
- 3856US5794102AToner cartridge with heat shield shutterLEXMARK INT INC·Filed 1996·Granted Aug 11, 1998·12 cites·6 claims
- 3953US6262753B1Electrophotographic imaging apparatus with reduced packaging sizeLEXMARK INT INC·Filed 2000·Granted Jul 17, 2001·1 cites·22 claims
- 4052US2009110410A1Methods for moving a media sheet within an image forming deviceLEXMARK INT INC·Filed 2008·Application pending·0 cites
- 4148US8374535B2Pivoting end cap for a fuser module of an image forming deviceLEXMARK INT INC·Filed 2009·Granted Feb 12, 2013·0 cites·21 claims
- 4248US6535236B1Referencing mechanism for an imaging apparatusLEXMARK INT INC·Filed 2000·Granted Mar 18, 2003·4 cites·29 claims
- 4348US2007248365A1Methods for moving a media sheet within an image forming deviceLEXMARK INT INC·Filed 2006·Application pending·0 cites
- 4442US2007246880A1Methods For Moving A Media Sheet Within An Image Forming DeviceTOTSUKA KENJI·Filed 2007·Application pending·0 cites
- 4540US9927763B2Two door interlock mechanism for an imaging deviceLEXMARK INT INC·Filed 2016·Granted Mar 27, 2018·0 cites·19 claims
- 4640USD399249SToner cartridge for laser printerLEXMARK INT INC·Filed 1996·Granted Oct 6, 1998·4 cites·1 claims
- 4739US7734226B2Lift mechanism for one or more developer members in an image forming deviceLEXMARK INT INC·Filed 2007·Granted Jun 8, 2010·0 cites·19 claims
- 4838US7693445B2Cleaner units and methods for removing waste toner within an image forming deviceLEXMARK INT INC·Filed 2006·Granted Apr 6, 2010·0 cites·20 claims
- 4937US2007248366A1Devices for moving a media sheet within an image forming apparatusLEXMARK INT INC·Filed 2006·Application pending·0 cites
- 5033US7986911B2Architecture for a media feeding option for an image forming deviceLEXMARK INT INC·Filed 2007·Granted Jul 26, 2011·0 cites·18 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →