Inventor · disambiguated record
Robert Watson Mcalpine
Also filed as: MCALPINE ROBERT W · MCALPINE ROBERT WATSON
38 granted patents·3 pending applications·204 citations·filing 2002–2020
97Inventor score
Top patents by PatentIndex Score
41 records- 0198US9519243B2Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensingLEXMARK INT INC·Filed 2015·Granted Dec 13, 2016·20 cites·24 claims
- 0298US9389582B2Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensingLEXMARK INT INC·Filed 2014·Granted Jul 12, 2016·22 cites·23 claims
- 0397US9360797B1Toner cartridge having a movable projection for providing installation feedback to an image forming deviceLEXMARK INT INC·Filed 2015·Granted Jun 7, 2016·23 cites·24 claims
- 0495US9983506B2Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensingLEXMARK INT INC·Filed 2016·Granted May 29, 2018·6 cites·18 claims
- 0594US9841722B2Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensingLEXMARK INT INC·Filed 2016·Granted Dec 12, 2017·5 cites·19 claims
- 0694US8918032B2Volumetric toner cartridge having toner agitatorsABLER JEFFREY ALAN·Filed 2012·Granted Dec 23, 2014·16 cites·18 claims
- 0793US9063460B2Volumetric toner cartridge having driven toner platformABLER JEFFREY ALAN·Filed 2012·Granted Jun 23, 2015·16 cites·26 claims
- 0892US9915894B2Electrophotographic image forming device having a toner cartridge that includes a movable projection for providing installation feedbackLEXMARK INT INC·Filed 2017·Granted Mar 13, 2018·3 cites·24 claims
- 0992US9335656B2Toner level sensing using rotatable magnets having varying angular offsetLEXMARK INT INC·Filed 2014·Granted May 10, 2016·6 cites·14 claims
- 1089US9709925B2Toner cartridge having a movable projection for providing installation feedback to an image forming deviceLEXMARK INT INC·Filed 2016·Granted Jul 18, 2017·2 cites·13 claims
- 1189US6771922B2Toner cartridgeLEXMARK INT INC·Filed 2002·Granted Aug 3, 2004·37 cites·9 claims
- 1287US10656559B2Toner cartridge having a movable projection for providing installation feedback to an image forming deviceLEXMARK INT INC·Filed 2018·Granted May 19, 2020·1 cites·24 claims
- 1386US10488811B2Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensingLEXMARK INT INC·Filed 2019·Granted Nov 26, 2019·1 cites·18 claims
- 1486US10197944B2Toner cartridge having a movable projection for providing installation feedback to an image forming deviceLEXMARK INT INC·Filed 2018·Granted Feb 5, 2019·1 cites·18 claims
- 1586US10036981B2Toner cartridge having a movable projection for providing installation feedback to an image forming deviceLEXMARK INT INC·Filed 2018·Granted Jul 31, 2018·1 cites·24 claims
- 1685US10303111B2Image forming device having a replaceable unit that includes magnets of varying angular offset for toner level sensingLEXMARK INT INC·Filed 2017·Granted May 28, 2019·1 cites·19 claims
- 1785US9709928B2Drive mechanism for an intermediate transfer member module of an electrophotographic imaging deviceLEXMARK INT INC·Filed 2016·Granted Jul 18, 2017·2 cites·10 claims
- 1885US9477178B1System for determining the open or closed state of a toner cartridge shutterLEXMARK INT INC·Filed 2015·Granted Oct 25, 2016·3 cites·10 claims
- 1984US10884357B2Toner cartridge having a movable projection for providing installation feedback to an image forming deviceLEXMARK INT INC·Filed 2020·Granted Jan 5, 2021·1 cites·24 claims
- 2084US9488935B1Drive mechanism for an intermediate transfer member module of an electrophotographic imaging deviceLEXMARK INT INC·Filed 2015·Granted Nov 8, 2016·2 cites·19 claims
- 2175US11156941B2Toner cartridge having a movable projection for providing installation feedback to an image forming deviceLEXMARK INT INC·Filed 2020·Granted Oct 26, 2021·0 cites·20 claims
- 2274US10719050B2Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensingLEXMARK INT INC·Filed 2019·Granted Jul 21, 2020·0 cites·7 claims
- 2373US7231163B2Apparatus and method of reducing charge roller contaminationLEXMARK INT INC·Filed 2005·Granted Jun 12, 2007·5 cites·15 claims
- 2472US10921746B2Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensingLEXMARK INT INC·Filed 2020·Granted Feb 16, 2021·0 cites·11 claims
- 2572US7167672B2Method and device for conveying waste toner in an image forming deviceLEXMARK INT INC·Filed 2005·Granted Jan 23, 2007·4 cites·19 claims
- 2669US10921730B2Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensingLEXMARK INT INC·Filed 2020·Granted Feb 16, 2021·0 cites·9 claims
- 2768US10591846B2Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensingLEXMARK INT INC·Filed 2018·Granted Mar 17, 2020·0 cites·31 claims
- 2868US9612545B2Chemically prepared core shell toner formulation including a styrene acrylate polyester copolymer used for the shellLEXMARK INT INC·Filed 2015·Granted Apr 4, 2017·1 cites·8 claims
- 2968US9477176B1Toner cartridge having a movable projection for providing installation feedback to an image forming deviceLEXMARK INT INC·Filed 2016·Granted Oct 25, 2016·0 cites·22 claims
- 3066US8304066B2Toner release coatingANDERSON RICHARD KENT·Filed 2008·Granted Nov 6, 2012·3 cites·18 claims
- 3161USD854078SToner cartridgeLEXMARK INT INC·Filed 2017·Granted Jul 16, 2019·8 cites·1 claims
- 3259US8238803B2Doctor blade surface energy modificationANDERSON RICHARD KENT·Filed 2008·Granted Aug 7, 2012·2 cites·18 claims
- 3359US6931224B2Toner cartridge hopper with labyrinth channels for releasing air while trapping toner in cartridgeLEXMARK INT INC·Filed 2003·Granted Aug 16, 2005·7 cites·7 claims
- 3458US10579003B1Compensation for deficient charge roll in an imaging deviceLEXMARK INT INC·Filed 2019·Granted Mar 3, 2020·0 cites·20 claims
- 3552US10488780B1Compensation for deficient charge roll in an imaging deviceLEXMARK INT INC·Filed 2019·Granted Nov 26, 2019·0 cites·13 claims
- 3650US2007054072A1Packaging material for a developing agent cartridgeLEXMARK INT INC·Filed 2005·Application pending·0 cites
- 3747US6990308B1Image forming device, print cartridge and doctor blade assembly that reduce vibrations at doctoring media nipLEXMARK INT INC·Filed 2004·Granted Jan 24, 2006·3 cites·18 claims
- 3843US7310494B2Developing agent transport and storageLEXMARK INT INC·Filed 2005·Granted Dec 18, 2007·0 cites·20 claims
- 3940USD841730SToner cartridgeLEXMARK INT INC·Filed 2017·Granted Feb 26, 2019·2 cites·1 claims
- 4036US2007237552A1Doctor Blade and Developer Assembly with Precision Diameter Radius for Improved Doctoring ConsistencyMCALPINE ROBERT W·Filed 2006·Application pending·0 cites
- 4130US2017010547A1Method of Making a Core Shell Toner Formulation Including a Styrene Acrylate Polyester Copolymer Used for the ShellLEXMARK INT INC·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →